This is a bit of a bash hack to catch STDERR and append a log level to it. So for example, if your script has pseudo loglevels like so: echo "INFO - finding files" [ -f ${files} ] || echo "WARN - no files found" Any subcommands that write to STDERR will screw that up Adding 2> >(fb=$(dd bs=1 count=1 2>/dev/null | od -t o1 -A n); [ "$fb" ] && err=$(printf "\\${fb# }"; cat) && echo "ERROR - $err") to the command does the following: 2> Redirect STDERR >( Spawn a subshell (STDERR is then redirected to the file descriptor for this subshell) fb=$(....) get the first byte of input [ "$fb" ] test if there's a first byte && err=$(printf....) save the output to the $err variable && echo "ERROR - $err" append your pseudo loglevel and the error message Heavily borrowed from https://unix.stackexchange.com/questions/33049/check-if-pipe-is-empty-and-run-a-command-on-the-data-if-it-isnt Show Sample Output

This will use tput to place the command (date %T in this case) in the upper right corner of the terminal

Very useful to get rid of backup files or wrong extension files that lure in your folders In this example first I do two searches for all filenames of the two extensions .jpg and .png, then delete the extension and only output the now duplicate files. I loop with these results and print a log and delete the file with the extension I dislike. Show Sample Output

the part after sed is optional. if you want, omit the last dot(.) yourself.

I wanted to count and display the top directories containing JavaScript files in some of my project. Here it is. Maybe it can be written to more simply syntax by using find -exec...

Use yes to repeat (it will continue until the pipe breaks) https://en.wikipedia.org/wiki/Yes_(Unix) head -n5 to repeat the piped command n times. https://en.wikipedia.org/wiki/Head_(Unix) Show Sample Output

Using zsh parameter expansion Show Sample Output

Trying to check for an open port and missing netcat or nmap? This is the lowest common denominator way to verify a port is accessible from one server to another. This will give you a pretty quick return of 0 if it works. If it fails, it will just hang and takes awhile to timeout. I usually ctrl+c the command. "echo ?$" will give you an exit code other then 0 after you exit. Show Sample Output

Waits URL, then converts. Show Sample Output

Here is an alternative that support unicodes, using echo: It is using the \c flag, meaning no new line for the echo option -e. You can replace the = with any unicode character. Or to do the same into a PHP bash script: shell = system("tput cols"); for( $i= 0 ; $i < $shell ; $i++ ){ echo "█"; } Show Sample Output

Get the total RESIDENT memory used by processes of a specific name. This means this is the MINIMUM used by a process, but some memory could be paged out to swap. Show Sample Output

Using to count all sentences in CoNLL data format

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Removed grep and simplified if statement. -- Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale. Show Sample Output

I couldn't find movie library on any of the SQLlite Stremio databases, but on ~/.config/stremio/backgrounds2 the background image filenames corresponds to IMDB URL. So I foreach files and wget HTML title of each movie and save it to a file. This will retrieve all movie names, not just the Library.

Pluralize a word, aka change from single to multiple; text formatting. echo hamburgler | pluralize Show Sample Output

Disabling Gradle daemon can sometimes improve build reliability.

example or test, basic awareness on app state, mostly for copy-paste reasons, requires auditd (ausyscall), rekt echoing (everything here is rekt) Show Sample Output

This command sent the Python version to a file. This is intended to be used in scripts. For some reason, simple redirections didn't work with "python -V" Show Sample Output