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Very quick! Based only on the content sizes and the character counts of filenames. If both numbers are equal then two (or more) directories seem to be most likely identical.
if in doubt apply:
diff -rq path_to_dir1 path_to_dir2
AWK function taken from here:
displays a list of all file extensions in current directory and how many files there are of each type of extension in ascending order (case insensitive)
Sometimes there are just no variables such as $DESKTOP_SESSION, $GDMSESSION, or $WINDOWMANAGER.
Old drive with lots of music or unsorted drive? This command will play all mp3 files in a folder and after playing one song or pressing q, it will ask you if you want to delete the file.
You can omit the -d to see what's inside directories. In that case, you may want -a to see dotfiles inside those directories. (Otherwise you don't need -a since you're explicitly looking at them.)
alias lst="ls -ls -tr | tail"
Find all files larger than 500M in home directory and print them ordered by size with full info about each file.
This one works without an external program (watch). Witch is not await able all the time. HINT: use CTRL + C to exit the loop.
This command will delete all files and folders except 'skipme'. it could be a file or a folder.
Use this command if you want to control the size of the files in human readable, every one second.
Sorts by latest modified files by looking to current directory and all subdirectories
Display a list of local shell scripts soft-linked to /usr/local/bin
Put local shell scripts to local ~/bin/ directory and soft-link them to /usr/local/bin/ which is in the $PATH variable to run them from anywhere.
"find ./ ..." could be replaced with "find $PWD ..." to display absolute path instead of relative path.
Like top, but for files
basic find implementation for systems that don't actually have find, like an android console without busybox installed.
RU: Найдет число файлов в папке по данной маске в цикле по дням месяца