Seonglae Cho| grep regex
grep alias
line
-r- recursive
-n- which line
grep count
which file
-H- which file
How can I use grep to find a word inside a folder?
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https://stackoverflow.com/questions/4121803/how-can-i-use-grep-to-find-a-word-inside-a-folder
command line grep * does not work but grep *. works
From your output it is apparent that you want to find all files that belong to "staff" group and created at hour 22 ( or 10 pm in 12 hour format ). We'll address that below, but lets first figure out what your grep commands do and why they're not the right tool for what you want.
https://askubuntu.com/questions/872716/command-line-grep-does-not-work-but-grep-works
