I want to print next sentence after match
My file content like this:
SSID:CoreFragment
Passphrase:WiFi1234
SSID:CoreFragment_5G
Passphrase:WiFi1234
SSID:Aleph_inCar
Passphrase:1234567890
As per my search,e.g. If I found WIFI-3(SSID) than, I want to print 1234ABCD. I used this command to search SSID:
grep -oP '^SSID:\K.+' file_name
After this search I want to print Passphrase of that particular match.
I'm working on Ubuntu 18.04
ssid=$(grep -oP '^SSID:\K.+' list_wifi.txt)
for ssid in $(sudo iwlist wlp2s0 scan | grep ESSID | cut -d '"' -f2)
do
if [ $ssid == $ssid_name ]; then
echo "SSID found...";
fi
done
I want to print next line after match.
another awk
$ awk -F: -v s="$ssid" '$0=="SSID:"s{c=NR+1} c==NR{print $2; exit}' file
1234ABCD
will only print the value if it's on the next line.
awk -F: '/WIFI-3/{getline;print $2; exit}' file
1234ABCD
Robustly (wont fail due to partial matches, etc.) and idiomatically:
$ awk -F':' 'f{print $2; exit} ($1=="SSID") && ($2=="WIFI-3"){f=1}' file
1234ABCD
Please try the following:
ssid="WIFI-3"
passphrase=$(grep -A 1 "^SSID:$ssid" file_name | tail -n 1 | cut -d: -f2)
echo "$passphrase"
which yields:
1234ABCD
Since code tags have changed the look of samples so adding this now.
var=$(awk '/SSID:[a-zA-Z]+-[0-9]+/{flag=1;next} flag{sub(/.*:/,"");value=$0;flag=""} END{print value}' Input_file)
echo "$var"
Could you please try following.
awk '/Passphrase/ && match($0,/WIFI-3 Passphrase:[0-9a-zA-Z]+/){val=substr($0,RSTART,RLENGTH);sub(/.*:/,"",val);print val;val=""}' Input_file
Using Perl
$ export ssid="WIFI-3"
$ perl -0777 -lne ' /SSID:$ENV{ssid}\s*Passphrase:(\S+)/ and print $1 ' yash.txt
1234ABCD
$ export ssid="Aleph_inCar"
$ perl -0777 -lne ' /SSID:$ENV{ssid}\s*Passphrase:(\S+)/ and print $1 ' yash.txt
1234567890
$
$ cat yash.txt
SSID:CoreFragment
Passphrase:WiFi1234
SSID:CoreFragment_5G
Passphrase:WiFi1234
SSID:Aleph_inCar
Passphrase:1234567890
SSID:WIFI-1
Passphrase:1234ABCD
SSID:WIFI-2
Passphrase:123456789
SSID:WIFI-3
Passphrase:1234ABCD
You can capture it in variables as
$ passphrase=$(perl -0777 -lne ' /SSID:$ENV{ssid}\s*Passphrase:(\S+)/ and print $1 ' yash.txt)
$ echo $passphrase
1234567890
$
Related
I have some text I need to split up to extract the relevant argument, and my [g]awk match command does not behave - I just want to understand why?! (I have written a less elegant way around it now...).
So the string is blahblah|msgcontent1=HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002|msgcontent2=header
I want to output just the contents of msgcontent1=, so did
echo "blahblah|msgcontent1=HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002|msgcontent2=header" | gawk '{ if (match($0,/msgcontent1=(.*)[|]/,a)) { print a[1]; } }'
Trouble instead of getting
HeaderUUIiewConsenFlagPSMessage
I get the match with everything from there to the last pipe of the string HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002
Now I accept this is because the regexp in /msgcontent1=(.*)[|]/ can match multiple ways, but HOW do I make it match the way I want it to??
With your shown samples please try following. Written and tested in GNU awk this will print only contents from msgcontent1= till | first occurrence.
awk 'match($0,/msgcontent1=[^|]*/){print substr($0,RSTART+12,RLENGTH-12)}' Input_file
OR with echo + awk try:
echo "blahblah|msgcontent1=HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002|msgcontent2=header" |
awk 'match($0,/msgcontent1=[^|]*/){print substr($0,RSTART+12,RLENGTH-12)}'
With FPAT option in GNU awk:
awk -v FPAT='msgcontent1=[^|]*' '{sub(/.*=/,"",$1);print $1}' Input_file
This is your input:
s='blahblah|msgcontent1=HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002|msgcontent2=header'
You may use gnu awk like this to extract value after msgcontent1=:
awk -F= -v RS='|' '$1 == "msgcontent1" {print $2}' <<< "$s"
HeaderUUIiewConsenFlagPSMessage
or using this sed:
sed -E 's/^(.*\|)?msgcontent1=([^|]+).*/\2/' <<< "$s"
HeaderUUIiewConsenFlagPSMessage
Or using this gnu grep:
grep -oP '(^|\|)msgcontent1=\K[^|]+' <<< "$s"
HeaderUUIiewConsenFlagPSMessage
echo "blahblah|msgcontent1=HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002|msgcontent2=header" | awk '{ if (match($0,/msgcontent1=([^\|]*)/,a)) print a[1] }'
this prints HeaderUUIiewConsenFlagPSMessage
The reason your regex match msgcontent1=HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002 is that matching is 'hungry' so it allways finds the longest possible match
Also with awk:
echo 'blahblah|msgcontent1=HeaderUUIiewConsenFlagPSMessage|msgtype2=Blah002|msgcontent2=header' | awk -v FS='[=|]' '$2 == "msgcontent1" {print $3}'
HeaderUUIiewConsenFlagPSMessage
I want to get the filename from a long string in shell script.After reading some example from likegeeks.com,I write a simple solution:
#/bin/bash
cdnurl="http://download.example.com.cn/download/product/vpn/rules/vpn_patch_20190218162130_sign.pkg?wsSecret=9cadeddedfr7bb85a20a064510cd3f353&wsABSTime=5c6ea1e7"
echo ${cndurl}
url=`echo ${cdnurl} | awk -F'/' '{ print $NF }'`
result=`echo ${url} | awk -F '?' '{ print $1}'`
echo ${url}
echo ${result}
I just want to get vpn_patch_20190218162130_sign.pkg,and the it does.I wonder is there any smart ways (may be one line).
If behind pkg it's not ?,how to use pkg to get the filename,I am not sure if always ? after pkg,but the filename always be *.pkg.
You can try : this is more robust as compare to second awk command:
echo "$cdnurl"|awk -v FS='/' '{gsub(/?.*/,"",$NF);print $NF}'
vpn_patch_20190218162130_sign.pkg
#less robust
echo "$cdnurl"|awk -vFS=[?/] '{print $(NF-1)}'
You should use sed :
sed -r 's|.*/(.*.pkg).*|\1|g'
how to pass and compare an external variable in awk command? is it also dependent on unix shell that we are using
I am trying to do :
mgrid=`echo $file1 | awk -F'|' '{ print $40}' `
echo $mgrid
var=`/usr/bin/more $HOME/pwd_date_chk/file2.txt | awk -F'|' ' -v search="$mgrid" '{ $41 ~ search print $15}'`
echo $var
awk can read the input from file. No need to use more. You can try this,
mgrid=`echo $file1 | awk -F'|' '{ print $40}' `
echo $mgrid
var=`awk -F'|' -v search="$mgrid" '$41 ~ search {print $15}' $HOME/pwd_date_chk/file2.txt`
echo $var
How would I go about converting the following bash line into perl? Could I run the system() command, or is there a better way? I'm looking for perl to print out access per day from my apache access_log file.
In bash:
awk '{print $4}' /etc/httpd/logs/access_log | cut -d: -f1 | uniq -c
Prints the following:
632 [27/Apr/2014
156 [28/Apr/2014
awk '{print $4}' /etc/httpd/logs/access_log | cut -d: -f1 | uniq -c
perl -lane'
($val) = split /:/, $F[3]; # First colon-separated elem of the 4th field
++$c{$val}; # Increment number of occurrences of val
END { print for map { "$c{$_} $_" } keys %c } # Print results in no order
' access.log
Switches:
-l automatically appends a newline to the print statement.
-l also removes the newlines from lines read by -n (and -p).
-a splits the line on whitespace into the array #F.
-n loops over the lines of the input but does not print each line.
-e execute the given script body.
Your original command translated to a Perl one-liner:
perl -lane '($k) = $F[3] =~ /^(.*?):/; $h{$k}++ }{ print "$h{$_}\t$_" for keys %h' /etc/httpd/logs/access_log
You can change all your commands to one from:
awk '{print $4}' /etc/httpd/logs/access_log | cut -d: -f1 | uniq -c
to
awk '{split($4,a,":");b[a[1]]++} END {for (i in b) print b[i],i}' /etc/httpd/logs/access_log
I am using the following ssh command to get a list of ids. Now I want to
get only ids greater than a given number in the list of ids; let's say "231219" in this case. How can I incorporate that?
I have a local file "ids_ignore.txt"; anyid we put in this list should be ignored by the command..
Can awk or cut do the above?
ssh -p 29418 company.com gerrit query --commit-message --files --current-patch-set \
status:open project:platform/code branch:master |
grep refs | cut -f4 -d'/'
OUTPUT:-
231222
231221
231220
231219
230084
229092
228673
228635
227877
227759
226138
226118
225817
225815
225246
223554
223527
223452
223447
226137
... | awk '$1 > max' max=8888 | grep -v -F -f ids_ignore.txt
Or, if you want to do it all with awk:
... | awk 'NR==FNR{ no[$1]++ }
NR!=FNR && $1 > max && ! no[$1]' max=NNN ids_ignore.txt -
cut cannot do numeric comparison on the input fields, it's just a simple field extraction tool. awk can do the work of grep and cut:
ssh -p 29418 company.com gerrit ... |
awk -F/ -v min=231219 '
NR == FNR {ignore[$1]; next}
/refs/ && $4>min && !($4 in ignore) {print $4}
' ids_ignore.txt -
The trailing - is important at the end of the awk command: it tells awk to read from stdin after it reads the ids_ignore file.