All Questions
190 questions
1
vote
3
answers
84
views
Loop ip list through geoiplookup and delete lines that do not match criteria
Thanks in advance for any ideas you present.
My current project has me trying to loop a file containing a list of 1000's of IP addresses through geoiplookup and piping it to sed to delete all lines ...
user711431
2
votes
3
answers
86
views
Printing a specific section everytime search results are matched
I have a pretty basic text file on a Linux machine that has stuff like Chapters, Dialogues and References.
This is what it looks like
Chapter: 1 One: Birds and Trees
Birds are beautiful and trees ...
-1
votes
5
answers
301
views
Delete all lines after n lines below the line containing the first match
If a file contains the following:
Line 1
FooLine 5
Line 2
Line 55
Line 3
Line 4
Line 5
Line 6
Line 7
Line 5
Line 8
Line 9
How to delete the lines below two lines after "Line 5", so that the ...
- 515
6
votes
13
answers
2k
views
UNIX command to add comma and space
I have a file that looks like
$ cat IP
10.3.1.1
10.4.1.1
10.6.3.1
10.19.4.2
10.22.3.4
How do I make it look like:
$ cat IP
10.3.1.1, 10.4.1.1, 10.6.3.1, 10.19.4.2, 10.22.3.4
0
votes
5
answers
1k
views
Delete lines below, excluding the line with match pattern
One can use sed '/pattern/Q' or sed '/pattern/,$d' to delete lines below a match pattern, but it also deletes the line containing the match pattern.
How to exclude the line containing the match ...
- 515
0
votes
6
answers
289
views
Delete all lines before n lines above the line containing the first match
If a file contains the following:
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Line 9
How to delete the lines above two lines before "Line 5", so that the file will now contain ...
- 515
1
vote
2
answers
212
views
Need help with a sed script for specific word replacements in a text file
I'm trying to automate a specific text replacement task for Romanian text using sed or any other suitable Unix tool. Here are my requirements:
Replace all instances of the letter â with î inside ...
- 141
-1
votes
1
answer
62
views
comparing multiple column values between two files
I have two CSV files on a Linux machine, containing data as:
File A
Sunil,21,write a line,2312,12-03-2022
Ashok,22,write a para,2312,12-03-2022
Sam,23,create file using,2312,12-03-2022
FileB
21,...
- 11
2
votes
4
answers
700
views
Count lines ending in "*"
I have several files in a directory with this kind of content:
Wood *
Nails
Large Hammer *
Some names have a star after them, some don't. I have multiple files with such content. In each file a ...
- 51
0
votes
1
answer
147
views
Permutation with bash - Spread Five over Eight
Assuming I have the values A B C D E and eight places 1 2 3 4 5 6 7 8. How can I get all possible combinations printed with two- and three-time repetitions?
Example:
1 2 3 4 5 6 7 8
_______________
A ...
- 6,074
0
votes
1
answer
5k
views
add a new line after a specific string in a file? [duplicate]
Right now I'm using
echo sed '/\Random/a \
newly added line' info.txt
to append some text to a file but I also need to add text below a certain string let's say random, I know it is possible with ...
-4
votes
1
answer
637
views
Edit ntp.conf file using bash script to comment and replace lines
The output of current /etc/ntp.conf file in Debian 11:
# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help
driftfile /var/lib/ntp/ntp.drift
# Leap seconds definition provided by tzdata
...
- 546
2
votes
4
answers
1k
views
Merge multiple rows into single row then append to csv output file
I have multiple comma-separated files that I need first to merge the rows into a single row then I can append that row to append to one output.csv file.
file-1.txt:
CV-1999-0001,
CV-1999-0002,
CV-1999-...
- 123
1
vote
5
answers
7k
views
Sed to replace text that comes after match
I was working it with awk, and keying on $1 $2 fields, but awk would act differently depending on whether the FieldSeperator ($match) starts the line, or had a blank before it, or didn't have a blank ...
2
votes
2
answers
886
views
Comparing with csv file value
I have a csv file and I need to compare the value in 4th column of 2nd row with a string.
Sample csv file:
Col1,Col2,Col3,Col4
Val1,Val2,Val3,ValNeeded
I'm using the below code to perform this,
...
- 23