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How to grep a file on a specific field?
If grep is not necessary, one simple solution would be to use join for that: join -1 1 -2 3: join the two files where in the first file the first (and only) field is used and in the second file the third field. They are printed when they are equal. Adapting a solution from https://stackoverflow.com/a/9937241/1673337 you can use (g)awk to get:
How to grep rows that have certain value in a specific column?
The OP is wanting to use grep, which will print the whole line when a match is found, so the only thing to do is create the pattern that matches all and only what is required. Simplicity itself, and no reason to use sed or awk as `grep can handle the source as a file or a pipe.
How to grep for lines which contain particular words in a log file?
So in my above shell script I will split my data variable and look for hello word in abc.log so any line which contains hello word, I will print it out and similarly with world and tester as well.
When to use a comma in grep F?
I want to do a grep -F for the first file only on the third column of the second file (in the original File2 fields are separated by tabs), such as the output should be: How can I do it? Edit To Chaos: no, the comma is not a mistake.
What does the cut utility do in grep?
The official definition is – “The cut utility cuts out selected portions of each line from each file and writes them to the standard output. If no file arguments are specified, or a file argument is a single dash, cut reads from the standard input.”
How to use Grep and cut delimiter in Bash?
Using the grep and cut delimiter command (in bash shell scripting UNIX) – and kind of “reversing” it? Mixed in with the cut command (or another command if neccessary) to display just this part:
What’s the difference between man Grep and man cut?
As usually, we can run man grep and man cut to learn the basics about the utilities. The official definition is – “The cut utility cuts out selected portions of each line from each file and writes them to the standard output. If no file arguments are specified, or a file argument is a single dash, cut reads from the standard input.”