About the usage of sed awk grep [closed] - awk

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Everyone, what command line should I use to achieve this effect?
This is trying to use awk and sed but failed. Please advise.
Original:
server=/example-a.com/127.0.0.1#5353
ipset=/example-a.com/router
server=/example-b.com/127.0.0.1#5353
ipset=/example-b.com/router
server=/example-c.com/127.0.0.1#5353
ipset=/example-c.com/router
Achieve effect:
server=/example-a.com/127.0.0.1#5353
server=/example-a.com/127.0.0.2#5354
ipset=/example-a.com/router
server=/example-b.com/127.0.0.1#5353
server=/example-b.com/127.0.0.2#5354
ipset=/example-b.com/router
server=/example-c.com/127.0.0.1#5353
server=/example-c.com/127.0.0.2#5354
ipset=/example-c.com/router


Since you need arithmetic, I would go with awk:
awk -F'[#.]' '/^server/ { print $0, ORS $1"."$2"."$3"."$4"."$5+1"#"$6+1 } !/^server/'
Output:
server=/example-a.com/127.0.0.1#5353
server=/example-a.com/127.0.0.2#5354
ipset=/example-a.com/router
server=/example-b.com/127.0.0.1#5353
server=/example-b.com/127.0.0.2#5354
ipset=/example-b.com/router
server=/example-c.com/127.0.0.1#5353
server=/example-c.com/127.0.0.2#5354
ipset=/example-c.com/router

Related

How to search and replace words with common suffix in vim gvim? [closed]

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Eg.
abc_def_ghi_xyz
uvw_mno_gab_xyz
bac_cab_lmn_xyz
should be replaced with
ABC_xyz
ABC_xyz
ABC_xyz
How to do using awk, %s and sed commands ?

Using %s:
:%s/*_xyz/ABC_xyz/g
I would also suggest looking at :h about vim search and replace.

Using awk you can do:
awk -F_ '{print "ABC_"$NF}' file
Where:
-F_ .............. _ as field separator
"ABC_" ............ literal ABC_
$NF ............... last field
Using vim:
:%s/.*\ze_xyz/ABC
Using sed:
sed -r 's/.*(_xyz)/ABC\1/g' file

How to update 0.1.88 to 1.0.88 using awk? [closed]

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How do I change 0.1.88 to 1.0.88 using awk functionality?
I tried below:
ori_value=0.1.88
value=echo $ori_value | awk -F'.' -v OFS=. '++$(NF-1)'
this just updates to 0.2.88
but I want 1.0.88
Please help me with this
Thank you in advance

Could you please try following, written and tested with shown samples in GNU awk.
echo "0.1.88" | awk 'BEGIN{FS=OFS="."} {print $2,$1,$3}'
OR as per OP's shown variable:
echo "$ori_value" | awk 'BEGIN{FS=OFS="."} {print $2,$1,$3}'
2nd solution: With sed could you please try following in sed with shown samples.
echo "0.1.88" | sed 's/\([^.]*\)\.\([^.]*\)\.\([^.]*\)/\2.\1.\3/'

You could re-assign the fields, like so:
awk -F'.' -v OFS=. '{$1=$2; $2=0; print $0}'

Replace the second string in the double quotes with the first string in the double quotes [closed]

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I have a CSV file that I want to search and find the first occurrence then replace the second occurrence with the first
Here is an example of courses.csv
"Foo","Bar",course foo,Lorem
"Baz","Foo",course bar,Lorem
In the above CSV, I want to replace the second string in the double quotes with the first string in the double quotes
After the operation, the results should be as follow
"Foo","Foo",course foo,Lorem
"Baz","Baz",course bar,Lorem
How can I achieve this preferably on bash?

Assuming you'll always want to put the first field in place of the second field, I'd urge you to try the following:
awk 'BEGIN{FS=",";OFS=","}{$2=$1;print $0}' yourfile.csv
alternatively
awk -v FS="," -v OFS="," '{$2=$1;print $0}' yourfile.csv
this is not in-place: that would require some more effort, but the gist is this.

How do you delete all lines that contain no letters from the alphabet using either grep, sed, or awk? [closed]

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Remove all lines that don't contain a letter from the alphabet (upper or lower case)
Input :
34
76
0hjjAby68xp
H5e
895
Output :
0hjjAby68xp
H5e

With GNU grep:
grep '[[:alpha:]]' file
or GNU sed:
sed '/[[:alpha:]]/!d' file
Output:
0hjjAby68xp
H5e

Using awk:
$ awk '/[[:alpha:]]/' file
0hjjAby68xp
H5e

Script to grep on range of start/end text [closed]

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I am trying to write a script to grep output from a range based on text, not line numbers.
For instance, in my text file, I want to grep the output starting with $hostname and capture everything in between $endText and then output the data in between those to a file named $hostname.txt.

Since you didn't provide any details, here is the boiler plate.
$ sed -n '/start/,/end/p' file > outputfile
or
$ awk '/start/,/end/' file > outputfile