Commands tagged zsh

save as shell script and pipe your command output

whereis (1) - locate the binary, source, and manual page files for a command

Not actually better, just expanded a bit. The "whereis" command has the following output:

whereis gcc

gcc: /usr/bin/gcc /usr/lib/gcc /usr/bin/X11/gcc /usr/share/man/man1/gcc.1.gz

therefore the 'ls' error on first line, which could be eliminated with a little extra work.

this is the much easier zsh equivalent ...

You could avoid xargs and sed in this case (shorter command and less forking): At least bash and zsh have some mighty string modifiers.

I would also suggest using find with exec option to get more flexibility. You may leave out or include "special" file for example.

Enhancement for the 'busy' command originally posted by busybee : less chars, no escape issue, and most important it exclude small files ( opening a 5 lines file isn't that persuasive I think ;) )

This makes an alias for a command named 'busy'. The 'busy' command opens a random file in /usr/include to a random line with vim.

You can find a command's history event number via the `history` command.

You can also put the history event number in your prompt: \! for bash, or %h for zsh.

Finally, I would like to point out that by "number", I mean POSITIVE INTEGER. Not, say, a letter, such as 'm'. Examples:

or

Continue a current job in the background and detach it from current terminal

make, find and a lot of other programs can take a lot of time. And can do not. Supppose you write a long, complicated command and wonder if it will be done in 3 seconds or 20 minutes. Just add "R" (without quotes) suffix to it and you can do other things: zsh will inform you when you can see the results.

You can replace zenity with other X Window dialogs program.

Often times you run a command in the terminal and you don't realize it's going to take forever. You can open a new terminal, but you lose the local history of the suspended one. You can stop the running command using , but that may produce undesirable side-effects. suspends the job, and (assuming you have no other jobs running in the background) %1 resumes it. Appending & tells it to run in the background.

You now have a job running concurrently with your terminal. Note this will still print any output to the same terminal you're working on.

Tested on zsh and bash.

This Anti-TarBomb function makes it easy to unpack a .tar.gz without worrying about the possibility that it will "explode" in your current directory. I've usually always created a temporary folder in which I extracted the tarball first, but I got tired of having to reorganize the files afterwards. Just add this function to your .zshrc / .bashrc and use it like this;

and it will create a folder for the extracted files, if they aren't already in a single folder.

This only works for .tar.gz, but it's very easy to edit the function to suit your needs, if you want to extract .tgz, .tar.bz2 or just .tar.

More info about tarbombs at http://www.linfo.org/tarbomb.html

Tested in zsh and bash.

UPDATE: This function works for .tar.gz, .tar.bz2, .tgz, .tbz and .tar in zsh (not working in bash):

UPDATE2: From the comments; bepaald came with a variant that works for .tar.gz, .tar.bz2, .tgz, .tbz and .tar in bash:

This is for zsh with extended globbing.

An alternative which uses the advanced zsh globbing (pattern matching)

This will show a numerical value for each of the 256 colors in ZSH. Everything in the command is a ZSH builtin, so it should run on any platform where ZSH is installed. Prints one color per line. If someone is interested in formatting the output, paste the alternative.

You can specify a range via '-'.

'n' is a non-negative integer. Using 0 will expand to the name of the previous command.

Depends on zsh and gst123 ( http://space.twc.de/~stefan/gst123.php )

cd in_your_music_root_folder and then issue the command

More recent versions of the date command finally have the ability to decode the unix epoch time into a human readable date. This function makes it simple to utilize this feature quickly.

or

Most pagers like less, more, most, and others require additional processes to be loaded, additional cpu time used, and if that wasn't bad enough, most of them modify the output in ways that can be undesirable.

What I wanted was a "more" pager that was basically the same as running:

Without modifying the output and without additional processes being created, cpu used, etc. Normally if you want to scroll the output of cat file without modifying the output I would have to scroll back my terminal or screen buffer because less modifies the output.

After looking over many examples ranging from builtin cat functions created for csh, zsh, ksh, sh, and bash from the 80's, 90s, and more recent examples shipped with bash 4, and after much trial and error, I finally came up with something that satisifed my objective. It automatically adjusts to the size of your terminal window by using the LINES variable (or 80 lines if that is empty) so

This is a great function that will work as long as your shell works, so it will work just find if you are booted in single user mode and your /usr/bin directory is missing (where less and other pagers can be). Using builtins like this is fantastic and is comparable to how busybox works, as long as your shell works this will work.

One caveat/note: I always have access to a color terminal, and I always setup both the termcap and the terminfo packages for color terminals (and/or ncurses and slang), so for that reason I stuck the

command at the beginning of the function, so it only runs 1 time, and that causes the -- SHMore -- prompt to have a blue background and bright white text.

This is one of hundreds of functions I have in my http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html">.bash_profile at http://www.askapache.com/">AskApache.com, but actually won't be included till the next update.

If you can improve this in any way at all please let me know, I would be very grateful! ( Like one thing I want is to be able to continue to the next screen by pressing any key instead of now having to press enter to continue)

Press > or < to go to the next or previous track. Space to toggle play/pause, etc.

It creates a temp file descriptor. To see where the file descriptor gets created type: echo <(echo foo)

This works better than running find first, then piping to mplayer with xargs or something, because that won't let you use keyboard shortcuts.

Use sed to comment out any up/down bindings in zsh