Simple, but very^2 important.
$ cat file1
123
123
321
342
546
523
652
$ cat file2
143
767
984
123
342
Sort the files in ascending order:
$ sort -o file1.srt file1
$ sort -o file2.srt file2
----------------------------------
$ comm --help
Usage: comm [OPTION]... LEFT_FILE RIGHT_FILE
Compare sorted files LEFT_FILE and RIGHT_FILE line by line.
-1 suppress lines unique to left file
-2 suppress lines unique to right file
-3 suppress lines unique to both files
--help display this help and exit
--version output version information and exit
Report bugs to
$ comm -12 file1.srt file2.srt
123
342
or
Without sorting, we have an easy option with "grep"
$ grep -f file1 file2
123
342
Thursday, February 14, 2008
Finding common numbers between two files - BASH
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© Jadu Saikia www.UNIXCL.com
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