All Questions
51 questions
1vote
4answers
6kviews
sed command to replace last occurrence of a word in a file with the content of another file
macOS sed command to replace last occurrence of a word in a file Replace with the content from another file Replace only the last occurrence, means only once. The word can be a substring abchello or ...
- 129
3votes
2answers
7kviews
How to loop through file and execute the lines
I have a text file that contains bash commands for fetching some data from a database. Each command is separated with a newline. See an example below: (the commands could also have been "ls -l&...
0votes
1answer
588views
Search a value for one column and retrieve concatenated values from other columns of a file
I have a text file which has 4 columns and data looks like: P_ID C_ID Code MSG 10 12 001 abcd 20 21 003 jklm 10 ...
0votes
0answers
84views
How to parse a specific column and keep only a part with awk
I have a file like this A.txt (field separator = ,) : Kit Batch Export Software Version = NO_v1 Date And Time of Export = Experiment Name = MY20195334_MOL_2014_20201006Run180017 Instrument Software ...
- 529
-2votes
2answers
690views
covert Multi line into single line with grep name
Can you please help me this. item : name_1 213321654 32549846546 item : name_2 8563161631 item : name_3 96315242161 73216510631 51654316416 Need to convert ...
1vote
2answers
932views
Print only one value from duplicates [duplicate]
I have following content in a file. $ cat file.txt code-coverage-api jsch cloudbees-folder apache-httpcomponents-client-4-api apache-httpcomponents-client-4-api jsch apache-httpcomponents-client-...
- 621
-3votes
1answer
805views
remove duplicate lines based on first three column values
I am getting a file with content below The first three values might be repeating in other lines I want to keep one instance and remove other duplicates the output should be like below
- 11
0votes
2answers
425views
generate a password with minimum 2 numbers, 2 CAPS, 1 symbol, x lower alpha and max length of 16
I tried pwgen and makepasswd to generate a password... but these are not enough to generate with exact count of literals and numbers... pwgen -c -n -y -B 12 1 This is not working as expected as I ...
- 1,350
0votes
0answers
51views
Is there a way to pipe to a visual editor and then continue the pipeline? [duplicate]
I know that some command-line programs can open visual editors like Sublime in a "wait mode" which opens the editor, lets you edit, and on-close it resumes the program with the file contents (like git ...
- 215
8votes
3answers
1kviews
Looking for a way to view lines of a text file one-at-a-time centered on screen
I'm looking for a way to take a text file and put each line one-at-a-time centered on screen with a certain character width. Sort of like a bare-bones slide show, e.g. seeing the first line until the ...
- 215
1vote
3answers
5kviews
How to separate a file into parts by delimiter
I have a text file as follows: aaaa bbbb ---- cccc ---- dddd How can I use ---- as delimiter and take out for example dddd or cccc? By take out I mean run a command and get "dddd" if my input ...
- 165
0votes
2answers
2kviews
How to extract the key words containing row from an excel file?
I need to extract the key-words containing row from an excel file (.xls) as per the order specified in the given key-word file. For example I have an excel file namely genome.xls as given below, ...
- 129
1vote
2answers
3kviews
how to add commas for every listed item
in my shell program i just cut the names in the server and display them, echo `last | grep "pts" | sort | cut -d' ' -f1 | uniq | grep -v / `"." gives me an output of a22casti a22sahot a25zhang ...
- 11
2votes
1answer
9kviews
How to read a file with two columns into a script so that each line read as two variables
I have a file that has two columns like such. cat test.txt 100 2007 FFF 1993 7E7 1994 4BB 1995 I need to input each of the lines into a script, and have the two columns assigned as separate ...
- 123
-2votes
1answer
1kviews
Insert today's date at the end of a text file - using bash
I have a text files that is generated through daily running bash script - I want to append a date field into that text file - how can I achieve it ? Name NUM_OF_USERS A------10 B------20 **date-...
- 109
