Zsh is a shell with many advanced command-line and scripting features.

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Running commands stored in shell variables

The following works in my shell (zsh): > FOO='ls' > $FOO file1 file2 but the following doesn't: > FOO='emacs -nw' > $FOO zsh: command not found: emacs -nw even though invoking emacs ...
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2answers
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What does this zsh solution to “the argument list is too long” do?

I read in this answer from @Gilles the following: In zsh, you can load the mv builtin: setopt extended_glob zmodload -Fm zsh/files b:zf_\* mv -- ^*.(jpg|png|bmp) targetdir/ as a solution to ...
4
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2answers
609 views

Thousands separator in printf in zsh

I have been trying to define a thousands separator in printf for a while now and I have discovered that zsh has some problems with it. In bash I can use something like: $ printf "%'d\n" 1234567890 ...
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3answers
1k views

oh-my-zsh completion on home directory names

I recently switched to zsh from bash, and I'm using oh-my-zsh. There's a completion behaviour I don't want: in any directory, the list of autocompletion candidates seems to include the names of all ...
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1answer
2k views

Set variables in ZSH precmd and reference them in the prompt

Is there a way to set variables in the precmd function of zsh and then echo them in the prompt? Something like function precmd { GREETING='Hi Kevin!'; } PROMPT="$GREETING";
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3answers
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After installing oh-my-zsh: … /.zshrc:source:34: no such file or directory … /.oh-my-zsh/oh-my-zsh.sh

I just tried to install oh-my-zsh. I get the following error when I try to run rvm: zsh: command not found: rvm I also get the following error when I try to open a new tab: ...
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1answer
2k views

FPATH in zsh: functions and site-functions

I noticed I have the following line near the beginning of my .zshrc file: export FPATH=/usr/share/zsh/site-functions:/usr/share/zsh/4.2.6/functions:$FPATH I can't remember if I typed this myself ...
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Counting files in leaves of directory tree

I came up with the following snippet for counting files in each subdirectory: for x (**/*(/)); do print $x; find $x -maxdepth 1 -type f | wc -l; done The command outputs consecutive pairs (one ...
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1answer
35 views

Standard/canonical way to test whether foregoing pipeline produced output?

The situation I have in mind has the following structure: % some_command | [PRODUCED OUTPUT] || echo 'no output' >&2 Here [PRODUCED OUTPUT] stands for some as-yet-unspecified testing ...
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5answers
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Efficient data extraction from multiple files to a single CSV file

I have a large collection of XML files with the same exact structure: $ cat file_<ID>.xml ... ... ... <double>1.2342</double> <double>2.3456</double> ...
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403 views

Zsh completion on the second command or after an alias?

I have changed my OS X Yosemite shell to Zsh and configured with "oh my zsh" plugins, recently i installed proxychains-ng to proxy command line tools, but i found zsh completion does not work on the ...
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1answer
203 views

Apply parameter expansion flags to string or array literal in zsh

Sometimes I'd like to apply parameter expansion flags to a string or array literal in zsh. As an example use case, say that I want to split some comma-delimited string $arglist on commas, but prepend ...
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2answers
583 views

zmv command to rename file after matching pattern

I was trying to figure out a solution for this question using zmv. I am unable to find an exact solution using zmv. This is what I could come up with so far. From here, I could rename all files like ...
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4answers
1k views

Round/truncate digit in string in zsh (or with external tool)

I'm trying to do an interface to bc so it can be used intuitively and without the annoyance of getting "stuck" in it. I haven't got around to test it that much, because I got stuck on another detail, ...
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3answers
182 views

Repeating command with different filenames

Here's a layup for someone... I'm having to run a command repeatedly: $ wp input csv MyCSV01.csv directory_name $ wp input csv MyCSV02.csv directory_name $ wp input csv MyCSV03.csv directory_name ...
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1answer
131 views

Bash/zsh tab autocomplete: Given initial command, ignore certain files in directory with autocomplete

What I'm asking is a little bit specific, and might be a different than other autocomplete questions on Unix Stackexchange. Suppose I have a directory that looks like this -rw-r--r-- 1 hlin117 staff ...
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3answers
2k views

Update process name in shell, is it possible?

In C/C++ it is in general possible to do strcpy(argv[0], "new process name"). It's a hack used in malicous software to hide real process name. Is such operation possible via shell? What I want to do ...
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1answer
232 views

List directories with dot directories last, then dot files

I'm aware of the ls option --group-directories-first but that's not exactly what I want to achieve. The output should be: (sorted by name ASC) Directories Hidden Directories Hidden Files
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2answers
5k views

/usr/bin/env: zsh -: No such file or directory

I get the error /usr/bin/env: zsh -: No such file or directory ...when I run an executable zsh script that starts with the following shebang line: #!/usr/bin/env zsh - Also, FWIW, replacing - ...
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1answer
416 views

zsh prompt not escaped properly

This is my current prompt definition: PROMPT='%(?..%F{red}%?%f:)%F{blue}%n%f:%F{green}%{${PWD/#$HOME/~}%} %(!.%F{red}.%f)%# %f' The cursor sometimes starts one character behind the actual prompt, ...
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1answer
228 views

Stop tab completion suggesting 'messagebus'

I've got a directory called build, which I cd into quite a bit. If there isn't any directory bu* in the current directory, zsh tab completion: cd buTAB suggests messagebus/, which isn't in .. If I ...
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1answer
595 views

Installing powerline fonts for zsh + Prezto theme

I am currently using Zsh + Prezto for my scripting shell configuration. I have been using the sorin theme but am a little dissatisfied with it. I'd like to switch to the paradox theme! It is supposed ...
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1answer
47 views

Can I use Zsh's built-in wildcard matching to replace the use of `find` here?

This is a follow-up to another question I posted I use a script to automatically rename files according to a particular order: #!/usr/bin/env zsh pages=($(sed -n '/page_order/,/^$/ p' _config.yml | ...
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2answers
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Passing a command with arguments to a script

I am trying to write a shell script that receives as an input a command with arguments and runs it. As an example, I am hoping to use this in cron as follows: 0 11 * * * my_wrapper.sh "task_name" ...
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1answer
461 views

zsh syntax highlighting for files

I use zsh-syntax-highlighting package and it colorize all files with the same color as directories (path). I think one should have possibility to customize these colors or at least use $LS_COLORS as ...
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1answer
814 views

Functions defined in .zshrc not found when running script

I have a function in .zshrc that mostly updates the PATH: my_function() { PATH=... } and some scripts that depend on it, e.g. my_script.sh starts with the following lines: my_function # do ...
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1answer
225 views

Restricting grep's --color option to the interactive shell

I have the following variable I want to set to make grep behave a certain way: GREP_OPTIONS=--color=always The problem is, I only want this environment variable to be set on the command line. I ...
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2answers
3k views

tmux exits abruptly right after loading

I just compiled my own version of tmux with libevent. Whenever I run tmux from zsh, tmux starts, but exits quickly returning [exited]. I read here that the problem could be my configuration for ...
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1answer
95 views

How do I inform the rest of the system my shell has changed from zsh to bash?

I installed zsh because I thought I might prefer it over bash. I don't, and to revert it I have used chsh -s /bin/bash, which as myself gives You may not change the shell for 'cat'. I also changed ...
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1answer
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Why don't subshell expressions in ~/.zshenv lead to infinite regress?

I understand that ~/.zshenv gets sourced every time that an instance of zsh starts. This implies that having the following line ~/.zshenv would result in an infinite regress: (echo "$$ $(date)" ...
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Comparison of shells? [closed]

Do shells have any actual advantages or disadvantages? They can all run any binary, they all support pipes and > (output to file). Why would one choose bash over sh, or sh over ksh, etc? Why does ...
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1answer
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rsync with absolute paths and excluding subpaths

Say I have the following structure on path origin_path origin_path/X=1/A/... origin_path/X=1/B/... origin_path/X=1/C/... ... origin_path/X=2/A/... origin_path/X=2/B/... origin_path/X=2/C/... ... ... ...
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list of sofwares inspired by emac's dabbrev-expand [on hold]

I like the idea of dabbrev-expand in emacs, but I don't want to use emacs. What other software could I use? To ease the decision it would be nice to compile a little overview: Emacs — dabbrev-expand ...