Files & Folders
$ echo $null >> [fileName]
$ echo $null >> [filename]
$ cp [fileName] [newFileName]
$ cat [fileName] > [newFileName]
$ dd if=[fileName] of=[newFileName]
$ mv [fileName] [newFileName]
$ ln [fileOrigin] [linkDest]
$ grep [phrase] [fileName]
$ mount /dev/[device] [path]
$ ls -l files ~/.local/share/Trash/files
$ rm -r ~/.local/share/Trash
$ chmod [permission] [file]
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