We mention this because files compressed with gzip are very commonly tar archives.
Zgrep also works on tar files, but only seems to go as far as telling you whether or not it was able to find a match.
GREP OPTIONS IN LINUX ARCHIVE
It allows you to search the files inside of a compressed archive without having to first decompress that archive, basically saving you an extra step or two. You can use zgrep to search compressed files for a pattern. You could use this information to kill a running process or troubleshoot issues with the services running on your system. This is similar in function to just piping the output of the ‘ps’ command to grep. $ ls | grep DocumentsĪs you can see in the screenshot above, using the grep command saved us time by quickly isolating the word we searched for from the rest of the unnecessary output that the ls command produced.
Let’s look in our home directory for a folder called Documents.Īnd now, let’s try checking the directory again, but this time using grep to check specifically for the Documents folder. That’s something you would use the “ls” command for.īut, to make this whole process of checking the directory’s contents even faster, you can pipe the output of the ls command to the grep command. Say that you need to check the contents of a directory to see if a certain file exists there. Let’s look at some really common examples. You can use it to search a file for a certain word or combination of words, or you can pipe the output of other Linux commands to grep, so grep can show you only the output that you need to see. Grep is a command-line tool that Linux users use to search for strings of text.
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