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4 questions
-1votes
5answers
883views
How to make sure that the last character of each line of a file ends with single quote character
I have a file which has several lines. I wish to update the file while making sure that the last visible character of each line of the file is a single quote '. In case not, then we should add the ...
- 517
0votes
1answer
1kviews
How to add single quote at the end of ONLY the last line of a file [duplicate]
I want a non-perl solution where I should be able to append a single quote ' at the last visible (non-escape characters) line of a file and save it back to the file. cat example.txt var1: 'funn' var2: ...
- 517
1vote
1answer
63views
Replacing lines in one file based of indices in a second file
I have two files: Ref.txt which contains: ABCDEFG,15147,1,2,6 HIJKLMN,500,3,4 and Seq.txt which contains: ABCXXXX ABCDEXX IIJKXXX HIHKXXX LMNOPQR BBCDEXX STUVWXY I would like to replace the certain ...
- 59
2votes
4answers
3kviews
How to extract columns before and after a string ocurrence
I have a text file. That looks like: www.ac.com has address 6.1.1.146 www.ac.com is an alias for ac.com. www.ac.com is an alias for ac.com. www.ba.net is an alias for www-bn.gs.ba.com. www-bn.gs.ba....
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