AWK -- How to assign a variable's value from matching regex which comes later? - variables

While I have this awk script,
/regex2/{
var = $1}
/regex1/{
print var}
which I executed over input file:
regex1
This should be assigned as variable regex2
I got no printed output. The desired output is: "This" to be printed out.
I might then think to utilize BEGIN:
BEGIN{
/regex2/
var = $1}
/regex1/{
print var}
But apparently BEGIN cannot accommodate regex matching function. Any suggestion to this?


This would achieve the desired result:
awk '/regex2/ { print $1 }'
Otherwise, you'll need to read the file twice and perform something like the following. It will store the last occurrence of /regex2/ in var. Upon re-reading the file, it will print var for each occurrence of /regex1/. Note that you'll get an empty line in the output and the keyword 'This' on a newline:
awk 'FNR==NR && /regex2/ { var = $1; next } /regex1/ { print var }' file.txt{,}


Typically this sort of thing is done with a flag:
/regex1/ { f = 1 }
f && /regex2/ { var = $1; f = 0 }

Related

Grabbing value from piped file contents

Let's say I have the following file:
credentials:
[default]
key_id = AKIAGHJQTOP
secret_key = alcsjkf
[default2]
key_id = AKIADGHNKVP
secret_key = njprmls
I want to grab the value of [default] key_id. I'm trying to do it with awk command but I'm open to any other way if it's more efficient and easier. Instead of passing a file name to awk, I want to pass the file contents from environmental variable FILE_CONTENTS
I tried the following:
$export VAR=$(echo "$FILE_CONTENTS" | awk '/credentials.default.key_id/ {print $2}')
But it didn't work. Any help is appreciated.

You can use awk like this:
cat srch.awk
BEGIN { FS = " *= *" }
{ sub(/^[[:blank:]]+/, "") }
/:[[:blank:]]*$/ {
sub(/:[[:blank:]]*$/, "")
k = $1
}
/^[[:blank:]]*\[/ {
s = k "." $1
}
NF == 2 {
map[s "." $1] = $2
}
key in map {
print map[key]
exit
}
# then use it as
echo "$FILE_CONTENTS" |
awk -v key='credentials.[default].key_id' -f srch.awk
AKIAGHJQTOP
# or else
echo "$FILE_CONTENTS" |
awk -v key='credentials.[default].secret_key' -f srch.awk
alcsjkf

With your shown samples, please try following awk code. Written and tested in GNU awk.
awk -v RS='(^|\\n)credentials:\\n[[:space:]]+\\[default\\]\\n[[:space:]]+key_id = \\S+' '
RT && num=split(RT,arr," key_id = "){
print arr[num]
}
' Input_file
Here is the Online demo for used regex(its bit changed from regex used in awk code as escaping is done in program not in site).

Assumptions:
no spaces between labels and :
no spaces between [ the stanza name and ]
all lines with attribute/value pairs have exactly 3 space-delimited fields as shown (ie, attr = value; value has no embedded spaces)
the contents of OP's variable (FILE_CONTENTS) is an exact copy (data and format) of the sample file provided by OP
NOTE: if the input file format can differ from these assumptions then additional code must be added to address said differences; as mentioned in comments ... writing your own parser is doable but you need to insure you address all possible format variations
One awk idea:
awk -v label='credentials' -v stanza='default' -v attr='key_id' '
/:/ { f1=0; if ($0 ~ label ":") f1=1 }
f1 && /[][]/ { f2=0; if ($0 ~ "[" stanza "]") f2=1 }
f1 && f2 && /=/ { if ($1 == attr) { print $3; f1=f2=0 } }
'
This generates:
AKIAGHJQTOP

$ awk 'f{print $3; exit} /\[default]/{f=1}' <<<"$FILE_CONTENTS"
AKIAGHJQTOP
If that's not all you need then edit your question to provide more truly realistic sample input/output including cases where the above doesn't work.

open to any other way if it's more efficient and easier
I suggest taking look at python's configparser, which is part of standard library. Let FILE_CONTENTS environment variable be holding
credentials:
[default]
key_id = AKIAGHJQTOP
secret_key = alcsjkf
[default2]
key_id = AKIADGHNKVP
secret_key = njprmls
then create file getkeyid.py with content as follows
import configparser
import os
config = configparser.ConfigParser()
config.read_string(os.environ["FILE_CONTENTS"].replace("credentials","#credentials",1))
print(config["default"]["key_id"])
and do
python3 getkeyid.py
to get output
AKIAGHJQTOP
Explanation: I retrieve string from environmental variable and replace credentials with #credentials at most 1 time in order to comment that line (otherwise parser will fail), then parse it and retrieve value corresponding to desired key.

Issue converting github.com/*/raw/* URLs to raw.githubusercontent.com URLS using AWK

Given the following example URLs:
urls.txt
https://github.com/2RDLive/Pi-Hole/raw/master/Blacklist.txt
https://github.com/34730/asd/raw/master/adaway-export
https://github.com/568475513/secret_domain/raw/master/filter.txt
https://github.com/BlackJack8/iOSAdblockList/raw/master/Regular%20Hosts.txt
https://github.com/CipherOps/MiscHostsFiles/raw/master/MiscAdTrackingHostBlock.txt
https://github.com/DK-255/Pi-hole-list-1/raw/main/Ads-Blocklist
https://github.com/DRSDavidSoft/additional-hosts/raw/master/domains/blacklist/adservers-and-trackers.txt
https://github.com/DRSDavidSoft/additional-hosts/raw/master/domains/blacklist/unwanted-iranian.txt
https://github.com/DandelionSprout/adfilt/raw/master/Alternate%20versions%20Anti-Malware%20List/AntiMalwareHosts.txt
https://github.com/DavidTai780/AdGuard-Home-Private-Rules/raw/master/hosts.txt
https://github.com/DivineEngine/Profiles/raw/master/Quantumult/Filter/Guard/Advertising.list
https://github.com/Hariharann8175/Indicators-of-Compromise-IOC-/raw/master/Ransomware%20URL's
https://github.com/JumbomanXDA/host/raw/main/hosts
https://github.com/Kees1958/W3C_annual_most_used_survey_blocklist/raw/master/EU_US%2Bmost_used_ad_and_tracking_networks
https://github.com/KurzGedanke/kurzBlock/raw/master/kurzBlock.txt
https://github.com/MajkiIT/polish-ads-filter/raw/master/polish-adblock-filters/adblock.txt
https://github.com/MitaZ/Better_Filter/raw/master/Quantumult_X/Filter.list
https://github.com/MrWaste/Ad-BlockList-2019-08-31/raw/master/Pi-Hole%20BackUps/Black%20List/All%20Server%20Black%20List
https://github.com/Neo23x0/signature-base/raw/master/iocs/c2-iocs.txt
https://github.com/Pentanium/ABClientFilters/raw/master/ko/korean.txt
https://github.com/Phentora/AdguardPersonalList/raw/master/blocklist.txt
https://github.com/ShadowWhisperer/BlockLists/raw/master/Lists/Malware
https://github.com/SlashArash/adblockfa/raw/master/adblockfa.txt
https://github.com/SukkaW/Surge/raw/master/List/domainset/reject_sukka.conf
https://github.com/Th3M3/blocklists/raw/master/tracking%26ads.list
https://github.com/TonyRL/blocklist/raw/master/hosts
https://github.com/UnbendableStraw/samsungnosnooping/raw/master/README.md
https://github.com/UnluckyLuke/BlockUnderRadarJunk/raw/master/blockunderradarjunk-list.txt
https://github.com/VernonStow/Filterlist/raw/master/Filterlist.txt
https://github.com/What-Zit-Tooya/Ad-Block/raw/main/Main-Blocklist/Ad-Block-HOSTS.txt
https://github.com/XionKzn/PiHole-Lists/raw/master/PiHole/Blocklist_HOSTS.txt
https://github.com/YanFung/Ads/raw/master/Mobile
https://github.com/Yuki2718/adblock/raw/master/adguard/tracking-plus.txt
https://github.com/Yuki2718/adblock/raw/master/japanese/jp-filters.txt
https://github.com/ZYX2019/host-block-list/raw/master/Custom.txt
https://github.com/abc45628/hosts/raw/master/hosts
https://github.com/aleclee/DNS-Blacklists/raw/master/AdHosts.txt
https://github.com/angelics/pfbng/raw/master/ads/ads-domain-list.txt
https://github.com/blocklistproject/Lists/raw/master/ransomware.txt
https://github.com/cchevy/macedonian-pi-hole-blocklist/raw/master/hosts.txt
https://github.com/craiu/mobiletrackers/raw/master/list.txt
https://github.com/curutpilek12/adguard-custom-list/raw/main/custom
https://github.com/damengzhu/banad/raw/main/jiekouAD.txt
https://github.com/deletescape/noads/raw/master/lists/add-switzerland.txt
https://github.com/doadin/Pi-Hole-Blocklist/raw/main/block.list
https://github.com/dreammjow/MyFilters/raw/main/src/filters.txt
https://github.com/durablenapkin/block/raw/master/streaming.txt
https://github.com/eEIi0A5L/adblock_filter/archive/master.zip
https://github.com/easylist-thailand/easylist-thailand/raw/master/subscription/easylist-thailand.txt
https://github.com/fandagroupofficial/hosts/raw/main/pihole/ads
https://github.com/fandagroupofficial/hosts/raw/main/pihole/log
https://github.com/fandagroupofficial/hosts/raw/main/pihole/trackers
https://github.com/faralai/Pihole-Rules/raw/master/Fara-Popups_Head
https://github.com/faralai/Pihole-Rules/raw/master/Fara-Xiaomi-info
https://github.com/farrokhi/adblock-iran/raw/master/filter.txt
https://github.com/fskreuz/blocklists/raw/dev/domains.txt
https://github.com/ftpmorph/ftprivacy/raw/master/regex-blocklists/smartphone-and-general-ads-analytics-regex-blocklist-ftprivacy.txt
https://github.com/hell-sh/Evil-Domains/raw/master/evil-domains.txt
https://github.com/hosts-file/BulgarianHostsFile/raw/master/bhf.txt
https://github.com/igorskyflyer/ad-void/raw/main/AdVoid.Core.txt
https://github.com/jackrabbit335/UsefulLinuxShellScripts/raw/master/Hosts%20%26%20sourcelist/blacklist.txt
https://github.com/jakdev121/AMS2/raw/master/pi_indo_ads.txt
https://github.com/jakejarvis/ios-trackers/raw/master/blocklist.txt
https://github.com/jasirfayas/jBlocklist/raw/master/domains.lst
https://github.com/javabean/dnsmasq-antispy/raw/master/dnsmasq.ghostery_bugs.conf
https://github.com/javabean/dnsmasq-antispy/raw/master/dnsmasq.zz-extra-servers-manual.conf
https://github.com/jdlingyu/ad-wars/raw/master/hosts
https://github.com/jlonborg/piblacklist/raw/main/blacklist.txt
https://github.com/joaopinto14/PiHole/raw/main/adverts
https://github.com/kang49/kang49regexblacklistproject/raw/main/blacklist
https://github.com/lesong/Surge/raw/main/rule/BanProgramAD.list
https://github.com/lhie1/Rules/raw/master/Auto/REJECT.conf
https://github.com/mayesidevel/PiHoleLists/raw/master/MiscBlocklist
https://github.com/meinhimmel/hosts/raw/master/hosts
https://github.com/mhhakim/pihole-blocklist/raw/master/custom-blocklist.txt
https://github.com/migueldemoura/ublock-umatrix-rulesets/raw/master/Hosts/ads-tracking
https://github.com/minoplhy/filters/raw/main/Resources/blocked.txt
https://github.com/monojp/hosts_merge/raw/master/hosts_blacklist.txt
https://github.com/mtbnunu/ad-blocklist/raw/master/kr-list.txt
https://github.com/mtxadmin/ublock/raw/master/hosts/_telemetry
https://github.com/mullvad/dns-adblock/raw/main/lists/doh/adblock/custom
https://github.com/muxcc/AdsBlockLists/raw/master/aumm.hosts
https://github.com/nimasaj/uBOPa/raw/master/uBOPa.txt
https://github.com/notracking/hosts-blocklists/raw/master/dnscrypt-proxy/dnscrypt-proxy.blacklist.txt
https://github.com/npljy/npljy.github.io/raw/main/blocks/dns.txt
https://github.com/npljy/npljy.github.io/raw/main/blocks/filter.txt
https://github.com/olegwukr/polish-privacy-filters/raw/master/adblock.txt
https://github.com/parseword/nolovia/raw/master/skel/hosts-government-malware.txt
https://github.com/parseword/nolovia/raw/master/skel/hosts-nolovia.txt
https://github.com/pathforwardit/BlockList/raw/main/DomainList
https://github.com/pirat28/IHateTracker/raw/master/iHateTracker.txt
https://github.com/sa-ki13/jmsf/raw/master/japanese_mobile_site_dns_filter.txt
https://github.com/saurane/Turkish-Blocklist/raw/master/Blocklist/domains.txt
https://github.com/scomper/surge-list/raw/master/reject.list
https://github.com/sirsunknight/QuantumultX/raw/master/Filter/Radical-Advertising
https://github.com/smed79/blacklist/raw/master/hosts.txt
https://github.com/soteria-nou/domain-list/archive/master.zip
https://github.com/stamparm/maltrail/raw/master/trails/static/suspicious/pua.txt
https://github.com/sutchan/dnsmasq_ads_filter/raw/main/dnsmasq-ads-filter-list.txt
https://github.com/svetlyobg/svet-custom-domains/raw/master/ads-domains
https://github.com/tomzuu/blacklist-named/raw/master/ad.sites.conf
https://github.com/tomzuu/blacklist-named/raw/master/phishing.sites.conf
https://github.com/tomzuu/blacklist-named/raw/master/pushing.sites.conf
https://github.com/uBlockOrigin/uAssets/raw/master/filters/badware.txt
https://github.com/uBlockOrigin/uAssets/raw/master/filters/filters.txt
https://github.com/uBlockOrigin/uAssets/raw/master/filters/privacy.txt
https://github.com/unchartedsky/adguard-kr/raw/master/adguard-kr.txt
https://github.com/unflac/adFILTER/raw/master/filter.txt
https://github.com/vokins/ad/raw/main/ad.list
https://github.com/willianreis89/ADsBlock/raw/master/list.txt
https://github.com/wrysunny/ad_list/raw/master/adlist.txt
https://github.com/xOS/Config/raw/Her/Surge/RuleSet/Advertising.list
https://github.com/xinggsf/Adblock-Plus-Rule/raw/master/rule.txt
https://github.com/xlimit91/xlimit91-block-list/raw/master/blacklist.txt
https://github.com/xylagbx/ADBLOCK/raw/master/BLOCK/customadblockdomain.txt
https://github.com/ziozzang/adguard/raw/master/filter.txt
https://github.com/zznidar/BAR/raw/master/BAR-list
I'm using this command:
awk 'BEGIN{FS=OFS="/"}{if ($6~/^raw$/){$3="raw.githubusercontent.com"; for(i=0;i<=NF;++i) if (i!=6) {printf("%s%s",$i,(i==NF)?"\n":OFS)}}}' urls.txt
To produce this desired output:
https://raw.githubusercontent.com/2RDLive/Pi-Hole/master/Blacklist.txt
https://raw.githubusercontent.com/34730/asd/master/adaway-export
https://raw.githubusercontent.com/568475513/secret_domain/master/filter.txt
https://raw.githubusercontent.com/BlackJack8/iOSAdblockList/master/Regular%20Hosts.txt
...
But it yields this output:
https://raw.githubusercontent.com/2RDLive/Pi-Hole/raw/master/Blacklist.txt/https://raw.githubusercontent.com/2RDLive/Pi-Hole/master/Blacklist.txt
https://raw.githubusercontent.com/34730/asd/raw/master/adaway-export/https://raw.githubusercontent.com/34730/asd/master/adaway-export
https://raw.githubusercontent.com/568475513/secret_domain/raw/master/filter.txt/https://raw.githubusercontent.com/568475513/secret_domain/master/filter.txt
https://raw.githubusercontent.com/BlackJack8/iOSAdblockList/raw/master/Regular%20Hosts.txt/https://raw.githubusercontent.com/BlackJack8/iOSAdblockList/master/Regular%20Hosts.txt
...
Why is it printing a semblance of the original URL before the correct output?
Here is the above code formatted legibly with gawk -o-:
BEGIN {
FS = OFS = "/"
}
{
if ($6 ~ /^raw$/) {
$3 = "raw.githubusercontent.com"
for (i = 0; i <= NF; ++i) {
if (i != 6) {
printf "%s%s", $i, (i == NF) ? "\n" : OFS
}
}
}
}

Your only real problem is that awk fields, arrays, and strings all start at 1, not 0, so your loop should have started at 1, not 0. As written first time through your loop print $i is doing print $0.
Having said that, I think what you want is the following with a couple of other things tidied up:
$ cat tst.awk
BEGIN { FS=OFS="/" }
sub(/^raw$/,RS,$6) && sub(OFS RS,"") {
$3 = "raw.githubusercontent.com"
print
}
$ awk -f tst.awk urls.txt
https://raw.githubusercontent.com/2RDLive/Pi-Hole/master/Blacklist.txt
https://raw.githubusercontent.com/34730/asd/master/adaway-export
https://raw.githubusercontent.com/568475513/secret_domain/master/filter.txt
https://raw.githubusercontent.com/BlackJack8/iOSAdblockList/master/Regular%20Hosts.txt
https://raw.githubusercontent.com/CipherOps/MiscHostsFiles/master/MiscAdTrackingHostBlock.txt
https://raw.githubusercontent.com/DK-255/Pi-hole-list-1/main/Ads-Blocklist
https://raw.githubusercontent.com/DRSDavidSoft/additional-hosts/master/domains/blacklist/adservers-and-trackers.txt
https://raw.githubusercontent.com/DRSDavidSoft/additional-hosts/master/domains/blacklist/unwanted-iranian.txt
https://raw.githubusercontent.com/DandelionSprout/adfilt/master/Alternate%20versions%20Anti-Malware%20List/AntiMalwareHosts.txt
https://raw.githubusercontent.com/DavidTai780/AdGuard-Home-Private-Rules/master/hosts.txt
https://raw.githubusercontent.com/DivineEngine/Profiles/master/Quantumult/Filter/Guard/Advertising.list
https://raw.githubusercontent.com/Hariharann8175/Indicators-of-Compromise-IOC-/master/Ransomware%20URL's
https://raw.githubusercontent.com/JumbomanXDA/host/main/hosts
https://raw.githubusercontent.com/Kees1958/W3C_annual_most_used_survey_blocklist/master/EU_US%2Bmost_used_ad_and_tracking_networks
https://raw.githubusercontent.com/KurzGedanke/kurzBlock/master/kurzBlock.txt
https://raw.githubusercontent.com/MajkiIT/polish-ads-filter/master/polish-adblock-filters/adblock.txt
https://raw.githubusercontent.com/MitaZ/Better_Filter/master/Quantumult_X/Filter.list
https://raw.githubusercontent.com/MrWaste/Ad-BlockList-2019-08-31/master/Pi-Hole%20BackUps/Black%20List/All%20Server%20Black%20List
https://raw.githubusercontent.com/Neo23x0/signature-base/master/iocs/c2-iocs.txt
https://raw.githubusercontent.com/Pentanium/ABClientFilters/master/ko/korean.txt
https://raw.githubusercontent.com/Phentora/AdguardPersonalList/master/blocklist.txt
https://raw.githubusercontent.com/ShadowWhisperer/BlockLists/master/Lists/Malware
https://raw.githubusercontent.com/SlashArash/adblockfa/master/adblockfa.txt
https://raw.githubusercontent.com/SukkaW/Surge/master/List/domainset/reject_sukka.conf
https://raw.githubusercontent.com/Th3M3/blocklists/master/tracking%26ads.list
https://raw.githubusercontent.com/TonyRL/blocklist/master/hosts
https://raw.githubusercontent.com/UnbendableStraw/samsungnosnooping/master/README.md
https://raw.githubusercontent.com/UnluckyLuke/BlockUnderRadarJunk/master/blockunderradarjunk-list.txt
https://raw.githubusercontent.com/VernonStow/Filterlist/master/Filterlist.txt
https://raw.githubusercontent.com/What-Zit-Tooya/Ad-Block/main/Main-Blocklist/Ad-Block-HOSTS.txt
https://raw.githubusercontent.com/XionKzn/PiHole-Lists/master/PiHole/Blocklist_HOSTS.txt
https://raw.githubusercontent.com/YanFung/Ads/master/Mobile
https://raw.githubusercontent.com/Yuki2718/adblock/master/adguard/tracking-plus.txt
https://raw.githubusercontent.com/Yuki2718/adblock/master/japanese/jp-filters.txt
https://raw.githubusercontent.com/ZYX2019/host-block-list/master/Custom.txt
https://raw.githubusercontent.com/abc45628/hosts/master/hosts
https://raw.githubusercontent.com/aleclee/DNS-Blacklists/master/AdHosts.txt
https://raw.githubusercontent.com/angelics/pfbng/master/ads/ads-domain-list.txt
https://raw.githubusercontent.com/blocklistproject/Lists/master/ransomware.txt
https://raw.githubusercontent.com/cchevy/macedonian-pi-hole-blocklist/master/hosts.txt
https://raw.githubusercontent.com/craiu/mobiletrackers/master/list.txt
https://raw.githubusercontent.com/curutpilek12/adguard-custom-list/main/custom
https://raw.githubusercontent.com/damengzhu/banad/main/jiekouAD.txt
https://raw.githubusercontent.com/deletescape/noads/master/lists/add-switzerland.txt
https://raw.githubusercontent.com/doadin/Pi-Hole-Blocklist/main/block.list
https://raw.githubusercontent.com/dreammjow/MyFilters/main/src/filters.txt
https://raw.githubusercontent.com/durablenapkin/block/master/streaming.txt
https://raw.githubusercontent.com/easylist-thailand/easylist-thailand/master/subscription/easylist-thailand.txt
https://raw.githubusercontent.com/fandagroupofficial/hosts/main/pihole/ads
https://raw.githubusercontent.com/fandagroupofficial/hosts/main/pihole/log
https://raw.githubusercontent.com/fandagroupofficial/hosts/main/pihole/trackers
https://raw.githubusercontent.com/faralai/Pihole-Rules/master/Fara-Popups_Head
https://raw.githubusercontent.com/faralai/Pihole-Rules/master/Fara-Xiaomi-info
https://raw.githubusercontent.com/farrokhi/adblock-iran/master/filter.txt
https://raw.githubusercontent.com/fskreuz/blocklists/dev/domains.txt
https://raw.githubusercontent.com/ftpmorph/ftprivacy/master/regex-blocklists/smartphone-and-general-ads-analytics-regex-blocklist-ftprivacy.txt
https://raw.githubusercontent.com/hell-sh/Evil-Domains/master/evil-domains.txt
https://raw.githubusercontent.com/hosts-file/BulgarianHostsFile/master/bhf.txt
https://raw.githubusercontent.com/igorskyflyer/ad-void/main/AdVoid.Core.txt
https://raw.githubusercontent.com/jackrabbit335/UsefulLinuxShellScripts/master/Hosts%20%26%20sourcelist/blacklist.txt
https://raw.githubusercontent.com/jakdev121/AMS2/master/pi_indo_ads.txt
https://raw.githubusercontent.com/jakejarvis/ios-trackers/master/blocklist.txt
https://raw.githubusercontent.com/jasirfayas/jBlocklist/master/domains.lst
https://raw.githubusercontent.com/javabean/dnsmasq-antispy/master/dnsmasq.ghostery_bugs.conf
https://raw.githubusercontent.com/javabean/dnsmasq-antispy/master/dnsmasq.zz-extra-servers-manual.conf
https://raw.githubusercontent.com/jdlingyu/ad-wars/master/hosts
https://raw.githubusercontent.com/jlonborg/piblacklist/main/blacklist.txt
https://raw.githubusercontent.com/joaopinto14/PiHole/main/adverts
https://raw.githubusercontent.com/kang49/kang49regexblacklistproject/main/blacklist
https://raw.githubusercontent.com/lesong/Surge/main/rule/BanProgramAD.list
https://raw.githubusercontent.com/lhie1/Rules/master/Auto/REJECT.conf
https://raw.githubusercontent.com/mayesidevel/PiHoleLists/master/MiscBlocklist
https://raw.githubusercontent.com/meinhimmel/hosts/master/hosts
https://raw.githubusercontent.com/mhhakim/pihole-blocklist/master/custom-blocklist.txt
https://raw.githubusercontent.com/migueldemoura/ublock-umatrix-rulesets/master/Hosts/ads-tracking
https://raw.githubusercontent.com/minoplhy/filters/main/Resources/blocked.txt
https://raw.githubusercontent.com/monojp/hosts_merge/master/hosts_blacklist.txt
https://raw.githubusercontent.com/mtbnunu/ad-blocklist/master/kr-list.txt
https://raw.githubusercontent.com/mtxadmin/ublock/master/hosts/_telemetry
https://raw.githubusercontent.com/mullvad/dns-adblock/main/lists/doh/adblock/custom
https://raw.githubusercontent.com/muxcc/AdsBlockLists/master/aumm.hosts
https://raw.githubusercontent.com/nimasaj/uBOPa/master/uBOPa.txt
https://raw.githubusercontent.com/notracking/hosts-blocklists/master/dnscrypt-proxy/dnscrypt-proxy.blacklist.txt
https://raw.githubusercontent.com/npljy/npljy.github.io/main/blocks/dns.txt
https://raw.githubusercontent.com/npljy/npljy.github.io/main/blocks/filter.txt
https://raw.githubusercontent.com/olegwukr/polish-privacy-filters/master/adblock.txt
https://raw.githubusercontent.com/parseword/nolovia/master/skel/hosts-government-malware.txt
https://raw.githubusercontent.com/parseword/nolovia/master/skel/hosts-nolovia.txt
https://raw.githubusercontent.com/pathforwardit/BlockList/main/DomainList
https://raw.githubusercontent.com/pirat28/IHateTracker/master/iHateTracker.txt
https://raw.githubusercontent.com/sa-ki13/jmsf/master/japanese_mobile_site_dns_filter.txt
https://raw.githubusercontent.com/saurane/Turkish-Blocklist/master/Blocklist/domains.txt
https://raw.githubusercontent.com/scomper/surge-list/master/reject.list
https://raw.githubusercontent.com/sirsunknight/QuantumultX/master/Filter/Radical-Advertising
https://raw.githubusercontent.com/smed79/blacklist/master/hosts.txt
https://raw.githubusercontent.com/stamparm/maltrail/master/trails/static/suspicious/pua.txt
https://raw.githubusercontent.com/sutchan/dnsmasq_ads_filter/main/dnsmasq-ads-filter-list.txt
https://raw.githubusercontent.com/svetlyobg/svet-custom-domains/master/ads-domains
https://raw.githubusercontent.com/tomzuu/blacklist-named/master/ad.sites.conf
https://raw.githubusercontent.com/tomzuu/blacklist-named/master/phishing.sites.conf
https://raw.githubusercontent.com/tomzuu/blacklist-named/master/pushing.sites.conf
https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/badware.txt
https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/filters.txt
https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/privacy.txt
https://raw.githubusercontent.com/unchartedsky/adguard-kr/master/adguard-kr.txt
https://raw.githubusercontent.com/unflac/adFILTER/master/filter.txt
https://raw.githubusercontent.com/vokins/ad/main/ad.list
https://raw.githubusercontent.com/willianreis89/ADsBlock/master/list.txt
https://raw.githubusercontent.com/wrysunny/ad_list/master/adlist.txt
https://raw.githubusercontent.com/xOS/Config/Her/Surge/RuleSet/Advertising.list
https://raw.githubusercontent.com/xinggsf/Adblock-Plus-Rule/master/rule.txt
https://raw.githubusercontent.com/xlimit91/xlimit91-block-list/master/blacklist.txt
https://raw.githubusercontent.com/xylagbx/ADBLOCK/master/BLOCK/customadblockdomain.txt
https://raw.githubusercontent.com/ziozzang/adguard/master/filter.txt
https://raw.githubusercontent.com/zznidar/BAR/master/BAR-list
The only slightly tricky part in that is sub(/^raw$/,RS,$6) && sub(OFS RS,"") which is how you remove a mid-record field in awk - first convert the field to a string that matches RS since that can't be present in the input (we can use RS directly when it's a string like \n rather than a regexp) so we changed raw to \n in the 6th field which meant the record now contained /\n/ and then removed /\n thereby removing the 6th field and preceding /.

How can I store the length of a line into a var withing awk script?

I have this simple awk script with which I attempt to check the amount of characters in the first line.
if the first line has more of less than 10 characters I want to store the amount
of caracters into a var.
Somehow the first print statement works but storing that result into a var doesn't.
Please help.
I tried removing dollar sign " thelength=(length($0))"
and removing the parenthesis "thelength=length($0)" but it doen't print anything...
Thanks!
#!/bin/ksh
awk ' BEGIN {FS=";"}
{
if (NR==1)
if(length($0)!=10)
{
print(length($0))
thelength=$(length($0))
print "The length of the first line is: ",$thelength;
exit 1;
}
}
END { print "STOP" }' $1

Two issues dealing with mixing ksh and awk scripting ...
no need to make a sub-shell call within awk to obtain the length; use thelength=length($0)
awk variables do not require a leading $ when being referenced; use print ... ,thelength
So your code becomes:
#!/bin/ksh
awk ' BEGIN {FS=";"}
{
if (NR==1)
if(length($0)!=10)
{
print(length($0))
thelength=length($0)
print "The length of the first line is: ",thelength;
exit 1;
}
}
END { print "STOP" }' $1

gsub for substituting translations not working

I have a dictionary dict with records separated by ":" and data fields by new lines, for example:
:one
1
:two
2
:three
3
:four
4
Now I want awk to substitute all occurrences of each record in the input
file, eg
onetwotwotwoone
two
threetwoone
four
My first awk script looked like this and works just fine:
BEGIN { RS = ":" ; FS = "\n"}
NR == FNR {
rep[$1] = $2
next
}
{
for (key in rep)
grub(key,rep[key])
print
}
giving me:
12221
2
321
4
Unfortunately another dict file contains some character used by regular expressions, so I have to substitute escape characters in my script. By moving key and rep[key] into a string (which can then be parsed for escape characters), the script will only substitute the second record in the dict. Why? And how to solve?
Here's the current second part of the script:
{
for (key in rep)
orig=key
trans=rep[key]
gsub(/[\]\[^$.*?+{}\\()|]/, "\\\\&", orig)
gsub(orig,trans)
print
}
All scripts are run by awk -f translate.awk dict input
Thanks in advance!

Your fundamental problem is using strings in regexp and backreference contexts when you don't want them and then trying to escape the metacharacters in your strings to disable the characters that you're enabling by using them in those contexts. If you want strings, use them in string contexts, that's all.
You won't want this:
gsub(regexp,backreference-enabled-string)
You want something more like this:
index(...,string) substr(string)
I think this is what you're trying to do:
$ cat tst.awk
BEGIN { FS = ":" }
NR == FNR {
if ( NR%2 ) {
key = $2
}
else {
rep[key] = $0
}
next
}
{
for ( key in rep ) {
head = ""
tail = $0
while ( start = index(tail,key) ) {
head = head substr(tail,1,start-1) rep[key]
tail = substr(tail,start+length(key))
}
$0 = head tail
}
print
}
$ awk -f tst.awk dict file
12221
2
321
4

Never mind for asking....
Just some missing parentheses...?!
{
for (key in rep)
{
orig=key
trans=rep[key]
gsub(/[\]\[^$.*?+{}\\()|]/, "\\\\&", orig)
gsub(orig,trans)
}
print
}
works like a charm.

awk: non-terminated string

I'm trying to run the command below, and its giving me the error. Thoughts on how to fix? I would rather have this be a one line command than a script.
grep "id\": \"http://room.event.assist.com/event/room/event/" failed_events.txt |
head -n1217 |
awk -F/ ' { print $7 } ' |
awk -F\" ' { print "url \= \"http\:\/\/room\.event\.assist\.com\/event\/room\/event\/'{ print $1 }'\?schema\=1\.3\.0\&form\=json\&pretty\=true\&token\=582EVTY78-03iBkTAf0JAhwOBx\&account\=room_event\"" } '
awk: non-terminated string url = "ht... at source line 1
context is
>>> <<<
awk: giving up
source line number 2
The line below exports out a single column of ID's:
grep "id\": \"http://room.event.assist.com/event/room/event/" failed_events.txt |
head -n1217 |
awk -F/ ' { print $7 } '
156512145
898545774
454658748
898432413
I'm looking to get the ID's above into a string like so:
" url = "string...'ID'string"

take a look what you have in last awk :
awk -F\"
' #single start here
{ print " #double starts for print, no ends
url \= \"http\:\/\/room\.event\.assist\.com\/event\/room\/event\/
' #single ends here???
{ print $1 }'..... #single again??? ...
(rest codes)
and you want to print exact {print } out? i don't think so. why you were nesting print ?

Most of the elements of your pipe can be expressed right inside awk.
I can't tell exactly what you want to do with the last awk script, but here are some points:
Your "grep" is really just looking for a string of text, not a
regexp.
You can save time and simplify things if you use awk's
index() function instead of a RE. Output formats are almost always
best handled using printf().
Since you haven't provided your input data, I can't test this code, so you'll need to adapt it if it doesn't work. But here goes:
awk -F/ '
BEGIN {
string="id\": \"http://room.event.assist.com/event/room/event/";
fmt="url = http://example.com/event/room/event/%s?schema=whatever\n";
}
count == 1217 { nextfile; }
index($0, string) {
split($7, a, "\"");
printf(fmt, a[0]);
count++;
}' failed_events.txt
If you like, you can use awk's -v option to pass in the string variable from a shell script calling this awk script. Or if this is a stand-alone awk script (using #! shebang), you could refer to command line options with ARGV.