All Questions
41 questions
0votes
3answers
196views
How to edit a string matching a pattern in a specific field on the condition another string is not present on the same line
I need to edit the string "NA" to "Na" only if it is in the 6th field of a file. I can currently achieve this with: awk '{gsub("NA","Na",$6)}1' $filename ...
1vote
2answers
6kviews
split string using a substring as delimiter and get the later part
Here is my string LIBRARY_TRGT_CANV,CANV_MATCH<anything> I wish to get all the text after last occurance of our delimiter which is _TRGT_: Desired output: CANV,CANV_MATCH<anything> ------ ...
- 517
0votes
1answer
123views
Need help Formatting a file having key: value [duplicate]
I have a file having the below values: cat data.txt server1: 'calv' server2: 'anot' log: '/u/log/1' server3: 'calv' server4: 'anot' server5: 'secd' server6: 'calv' LIB_TRGT_calv,anot: '/tmp/hello.txt' ...
- 517
-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
2answers
966views
Remove duplicates of specific line keeping only the first appearance of each without touching other unspecified duplicates
I'm trying to edit a text file containing several duplicates. The goal is to keep only the first match of a string and remove the rest duplicate lines of the same string. In the example file * Title 1 ...
-1votes
4answers
1kviews
Shell-script extract value pair with sed/awk?
Given a string like this: NAME="bla" TYPE="test" SIZE="10" I want to get the values for each pair into into separate shell-script vars. So, for example, say we have ...
- 183
1vote
3answers
107views
Vary positions in a string to generate a list of outputs
I am dealing with short strings (they're DNA sequences) of ~30 length. For my purposes, every 5th position needs to be swapped for any of the 4 DNA bases (A, C, T, G). e.g. if I have an input of ...
- 67
1vote
1answer
271views
How to get string between starting with X to ending with Y using Shell
I have dynamic string which are mentioned below, where I want to get ABCXXX.XXX.XXX string till , character. Starting character is fix (ABC)CAPITAL ONLY and ending also fix com or Xcom. String can be ...
- 603
0votes
1answer
113views
Print Multiple Substrings Including an IP Address
Good day! I have a giant input file that displays a lot of garbage and I would like to export multiple substrings. The problem is that sometimes additional information is injected into the file making ...
- 65
0votes
1answer
725views
How to execute multiple commands from an input file and string it to a new output file
I want to execute multiple commands (one after the other) from an input.txt file and output it to a new .csv file. All the commands run successfully when executed individually, but nothing happens ...
- 11
0votes
1answer
218views
Extracting multiple strings, according to a pattern, in a bash script
I'm writing a shell script to generate a directory listing. as an input a receive a long html string : https://www.mycompany.com/posts/aureliaflore_china-seoul-startup-activity-6571925510337728512-...
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
0votes
4answers
828views
Removing lines whose first column is duplicated
I have a file where strings are separated by a special string (not a comma or delimiter) e.g. <vvv>. I want to check if all strings in the first field are unique. If duplicate rows for the same ...
- 861
1vote
3answers
2kviews
Append strings to multiple space-separated values in a variable
I have a variable VAR="XYZ YZA ZAB" declared and I would like to append some strings next to all the words in that variable. For example: I want to append .file1 to each space-separate substring in ...
