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

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`ls\` logs out of terminal session?

Like many, I have an alias ll=ls -l[.]+ set. A moment ago, I typed ll and then accidentally hit \ on the way to return. I hit return again to finish the command (on the continued line prompt), ...
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48 views

How to avoid namespace collisions/pollution in a script meant to be sourced?

I want to implement a script foo.sh that culminates in the an execution of a command bar (with some arguments). The command bar modifies the current shell environment, which means that foo.sh must be ...
2
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1answer
47 views

How to reuse file pattern in .gitignore in bash/zsh?

Here is the content of the .gitignore cron.yaml build target webview *.pyc *.sublime-workspace .idea *.rej .coverage app/tools/temp_*.py app/tools/*/temp_*.py I am currently iteraring files in a ...
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7answers
273 views

How can I apply `cut` to several files and then `paste` the results?

I often do operations like paste <(cut -d, -f1 file1.csv) <(cut -d, -f1 file2.csv) which is very tedious with more than a few files. Can I automate this process, e.g. with globbing? I can ...
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3answers
111 views

'switch' based on shell

I would like to source (i.e. not call) a script from any shell (bash/csh are the primary targets, but fish, zsh, ksh, and rc would also be interesting). I would like if the script can be a single ...
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2answers
139 views

Arrays in Zsh. Check if any of the following variables is not defined

Say we have a set of variables that we want to test if they are defined, and set a condition if any of them are not. I am thinking of proceeding with something like the following: #!/usr/bin/env zsh ...
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2answers
86 views

For input redirection, are there functional differences between bash/zsh <<<“$(<file)” and the traditional <file?

I'm asking only about the usage which would have the similar effect as traditional input redirection from a file. <<<"$(<file)" as far as I can tell is equivalent to <file It ...
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1answer
312 views

Dynamic zsh autocomplete for custom commands

I'm trying to write completion functions for some custom functions I wrote, but seem to be really struggling with even the most basic ones. An example function is: function eb_instances() { if ...
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2answers
515 views

How can I make commands appear bold in zsh?

I have set up my bash shell so that any commands I type appear in bold and the commands' output is shown in normal weight: I did this by adding \e[01m at the end of my PS1 variable to turn on bold, ...
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2answers
1k views

What does `zstyle` do?

zstyle seems like it's just a central place to store and retrieve data, like an alternative to export. Is that true, or is there more to it?
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1answer
265 views

How to edit shell prompt to show time?

I would like to edit my shell prompt to display time. I am currently using zsh, though I would like the customize the shell prompt to show time. I understand that an echo $PS1 will give me the ...
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222 views

How can I make my Zsh theme (“fade”) look good in urxvt?

I am using Arch Linux and as a newbie I don't have any preference for a terminal emulator yet. Since rxvt-unicode seems to be the most popular one, I thought I'd try that first. I'm configuring it ...
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2answers
7k views

Have backticks (i.e. `cmd`) in *sh shells been deprecated?

I've seen this comment many times on Unix & Linux as well as on other sites that use the phrasing "backticks have been deprecated", with respect to shells such as Bash & Zsh. Is this ...
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1answer
44 views

zsh-completion: Completing two parts of an argument, separated by a colon

I'd like to set up zsh completion for a command which has a single argument of the form scheme:parameter. Suppose I have commands which can return all possible schemes, and all possible parameters. ...
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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
243 views

How to setup Mac OS X Terminal on bash and iTerm2 on zsh

I attempted to setup bash shell by default on Mac OS X (Yosemite) Terminal app and zsh shell by default on iTerm2 app. However, it is either bash shell or zsh shell for both the apps. $ chsh -s ...
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2k views

How to append / extend zshell completions?

I am using zsh with oh-my-zsh. Unfortunately, oh-my-zsh does not use file ~/.ssh/config for hostname auto-completion (see Issue #1009, for instance). This could easily archived by the following code: ...
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29 views

How to view current settings for all options?

I know that setopt with arguments will show the options that are set to values different from the default; e.g. % setopt interactive login monitor norcs shinstdin zle If you have memorized all the ...
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1answer
139 views

Running a command on different shells

While reading the answers of question Can bash write to its own input stream?, I found the following command runs on zsh but not on bash : print -z echo mnciitbhu 1 . Is -z an extension to the ...
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3answers
2k views

sharing or synchronizing history between Zsh and Bash

I often find myself switching between Bash and Zsh, and using the history search functionality to recover a command. However, since Bash and Zsh have different history files, I often find that the ...
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1answer
53 views

How to interpolate ${:-=cat} within a double-quoted string?

(In the following cat is a stand-in for "any command in $PATH".) Consider this example: % TMP=${:-=cat} % FOO="blah blah blah $TMP blah blah blah" % echo $FOO blah blah blah /bin/cat blah blah blah ...
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1answer
43 views

What does the + do in $+commands[…]?

Here's another question that is impossible to search for: how to interpret $+commands[foobar]? I assume that it is a variant of $commands[foobar], but who knows. (With zsh, at least I never know.) ...
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1answer
164 views

Is there a built-in (or at least simple) way to check for the existence of a function accessible through $FPATH?

I want to define a function foo in a script (intended to be sourced), but only on the condition that some executable, shell built-in, function, or alias of that name doesn't already "exist". The ...
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3answers
1k views

How to fix tab completion so it doesn't hide entries?

I'm using oh-my-zsh on Mac OS X with homebrew'ed zsh 4.3.12. I stumbled recently on a weird problem. In scripts/not-used I have several .R files: breakdowns.R eventloop.R ...
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1answer
47 views

How to trace parameter parsing and expansion?

The example below illustrates the sort of "Daily WTF" that I take zsh scripting to be. I've pretty much given up hope of ever understanding zsh's voluminous rules well enough to be able to figure out ...
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1answer
41 views

Backward and forward search are reversed with vi mode in zsh

When I enter in vi mode with set -o vi, I enter in command mode, and I touch the key ? it produces a / and the reverse. Is it normal? How can I change this behavior?
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2answers
92 views

How to create hyphen alias for zsh?

I am using zsh and oh-my-zsh on Ubuntu. To change into the recent directory in the past there was an alias set to - which is the same as cd -. Somehow the alias disappeared at my machine. This might ...
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4answers
287 views

How to remove the last command (or current command for bonus) from zsh history

Sure there's a super simple smart way to do this, but since history in zshell seems to be aliased to fc, there's no way to use the tricks mentioned in How to remove a single line from history?. Any ...
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1answer
266 views

How to pass environment variables to a new ssh-initiated login session?

Suppose that some variable FOO is defined (and export-ed) in the current environment. Let me call this environment E0. Now, I log into some other Unix system using ssh. % ssh ...
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2answers
52 views

Command behaving differently when saved in a *.sh file

I was not able to find an answer to this question, so maybe one of you guys can help me out :) I wrote some shell scripts to help me automate things, and they work. However, what doesn't work is ...
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256 colour prompt in Zsh

How can I set my prompt to be colourized in 256 colours? I am looking for an equivalent to the bash prompt: local DEFAULT="\[\033[0;39m\]" local ROOK="\[\033[38;5;24m\]" ...
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102 views

Passing variable definitions to specific shells in ssh

I would like to ssh to a machine with a pre-defined setting, specifically in zsh. To do so, I have tried doing the following from the client (inspired by this answer): $ ssh -t machine@domain ...
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98 views

How do you manage your bash/zsh Aliases?

How do you manage your bash/zsh Aliases? Is there a tool to do this more easily and less "think of an alias -> open .zshrc-sourced-file -> edit -> close, reload .zshrc -> use alias"?
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64 views

What does the `set — $args` line do here, and why does it behave differently between Zsh and Bash?

In the manpage for the version of getopt that comes with Mac OSX, an example is given that uses the construction args=$(getopt optstring $*); set -- $args. What does set -- $args do here? ...
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3answers
2k views

ZSH: `ls *(.)` lists regular files only but `ls *(/)` does not list directories only

I'm not sure I am using ZSH's globbing correctly, but I thought ls *(/) would just list the dirctories under pwd, but it doesn't, it recursively lists all files under every directory under pwd (I got ...
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3answers
679 views

Clear or disable aliases in zsh

I installed oh-my-zsh to make terminal use a bit easier. One thing that bugs me though is the prolific aliases added by it, like "ga", "gap", "gcmsg", "_", which are harder to remember than the ...
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1answer
376 views

Automatically colorize the output of tree

In plain zsh, tree is set similar to --color=auto by default. However, when I use Oh-My-Zsh, tree doesn't show colors. Since tree does not have a --color=auto option, how can I override the setting ...
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4answers
7k views

Is there any way to keep a command from being added to your history?

Is there any way to keep a command from being added to your history? I have a command that I want to keep out of my history file, and I really don't care to have it there when I search the history ...
37
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2answers
1k views

Completing avfs fake directories in zsh

How can I tweak zsh's completion system to complete “fake” files in some circumstances? More precisely, the AVFS filesystem exposes archives as directories by creating a “fake directory” next to ...
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0answers
136 views

Strange Highlighting Color In ZSH Menu

I am using Arch Linux and zsh. When selecting options from a menu in zsh the color appears to be off when moving down in the list. For example after pressing the tab key twice after typing cd results ...
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1answer
531 views

Exiting terminal running “nohup ./my_script &” => “You have running jobs”. OK to exit?

Say I run the following on a remote box with the idea of preventing killing the job when I disconnect the terminal. nohup ./my_script.sh & When I try to exit my terminal, I got the following ...
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2answers
81 views

how do I call git commands without 'git ' in front?

How do I tell my zsh to automatically try a command with git in front, if the command is not found? E.g. I want to run $ status and if there is no status in $PATH, my zsh should try git status.
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1answer
141 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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1answer
54 views

How to manage configurations across multiple computers and shells?

I am a traveling technologist who does not always have a reliable connection to a home server. I tend to jump between zsh and bash on a few of my own machines. What advice or recommendation would you ...
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1answer
97 views

Where is zsh storing my history?

I have two terminals open, both running zsh. The history options which I currently have set are these: export HISTFILE=~/.histfile export HISTSIZE=10000 export SAVEHIST=10000 setopt ...
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149 views

How to setup zkbd (zsh keyboard bindings) in a server?

I have zsh shell in a Linux server, and connect to the server from screen sessions in different computers. I'm trying to get control keys, such as home and end, to function correctly. Because zsh ...
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1answer
74 views

Expand parameter in quotes in zsh

(Not sure the title is adequate, at least I tried my best…) I want to pass function arguments to zsh’s emulate to evaluate a command in bash emulation: $ .bash() { emulate bash -c "$*" } $ .bash ...
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1answer
95 views

Can up arrow command history for oh-my-zsh narrow down history by options/parameters given to the command

Not sure I'm wording the question very well, but an example is worth a thousand words of mine. eg., using oh-my-zsh : git <up arrow> Will cycle up all the git commands I have used... git ...
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1answer
16 views

Is it possible to use two characters (e.g. ^tm) in insert mode in zsh for a command binding?

in my current .zshrc file I have bindkey -M viins -s '^tm' '^[Iman ^[Ela ^[d$' and this doesn't work, however when I remove m from the shortcut and it is now only ^t the shortcut is working. I'd ...
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1answer
93 views

zsh capture and pipe output to another command

I had the zsh script printf '%s\0' www/scripts6/lib/* | xargs -0 -I{} -P 50 babel {} > {} and it worked (i think.). But I needed to actually copy the files to the scripts directory instead of ...