Some of my earlier posts on the find command are listed below: The next command finds files that are larger than 1 GB: Notice that the command sends all the “permission denied” messages to the /dev/null. Without the addition of the head command in this example, this command would find a lot more empty files – representing the cache and such. To find empty files, use a command like this one: $ find.
To find a file by age, use the -mtime option and specify the number of days since the file was modified using a number like +100 (more than 100 days old) or -10 (modified within the last 10 days).
You can also look for files by file permissions as in the following example that looks for files that provide all access (777): $ find /usr/bin -name "d*" -perm 777 -ls | head -3ģ4026 0 lrwxrwxrwx 1 root root 9 /usr/bin/dvipdfmx -> xdvipdfmxĢ9934 0 lrwxrwxrwx 1 root root 18 /usr/bin/distro-info -> ubuntu-distro-infoģ3159 0 lrwxrwxrwx 1 root root 6 /usr/bin/dvilualatex -> luatex Notice that the beginning of the file name is included or there would be more files listed. To find files that have group write permissions, you could use a command like this one: $ find /usr/bin -name "net*" -perm -g=w -lsĢ6666 0 lrwxrwxrwx 1 root root 24 /usr/bin/netcat -> /etc/alternatives/netcat Group IDs can be used in place of group names.
To find files by group, use the “-group gname” specification. The third example below send output that generates an error (e.g., permission denied) to /dev/null so that it doesn't clutter up the screen. You can specify the username or the user ID. To find files by user, include the “-user uname” specification. This command will remove any file with a “.old” extension from your home directory (including subdirectories). To delete a file, you need to add the -exec rm command as shown below. You probably noticed in the two previous commands that you can list ( -ls means a long listing) or simply display the name of a file ( -print).
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