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bashawkgrepls

Find/list files ignoring uppercase/lowercase

How to list/find files that may or may not have uppercase letters. Lets say i have files in a folder: README.txt, Readme.txt, readme.txt, Readme.TXT, LICENCE.txt, licence.txt etc How do i list only files that have "readme" in file name and ignore all others. I can't use [A-Z] or [a-z]. Is there a better way to list all those readme.txt files? I know that [:alpha:] will ignore upper/lowercase - how to use it with ls of find?

Solution

  • You could do the following:

    ls | grep -i '^readme.txt$'
find . -maxdepth 1 -iname "readme.txt"

    First ls command would search for readme.txt ignoring the case using -i option in grep.

    Find command would find readme.txt by ignoring case in your current directory.