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

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What does $'text' do exactly in Bash? Can it be used in Zsh?

I recently run into the following proposed solution: cat results.csv | tr $'\x01' \\t > result.csv to convert a malformed csv file (one that uses \x01 unicode as a separator) into a correct one. ...
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5answers
8k views

How can I detect if the shell is controlled from SSH?

I want to detect from a shell script (more specifically .zshrc) if it is controlled through SSH. I tried the HOST variable but it's always the name of the computer which is running the shell. Can I ...
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0answers
28 views

Making zsh filename completion case-insensitive everywhere

I have the following line in my zshrc to make filename completions case-insensitive: zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}' This works most of the time but I’ve noticed that if I ...
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0answers
29 views

Is there a nice way to set directory/project local environment variables?

I have been working on several projects and they require different environment variables (e.g., PATH for different versions of clang executables, PYTHONPATH for several external modules). Whenever I ...
2
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1answer
233 views

alias -g '${1+“$@”}'='“$@”', what does it do?

Most makefile have this strange set of symbols '${1+"$@"}'. $@ is the makefile target filename. But why does, people try to use the complex symbol like '${1+"$@"}'?
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2answers
55 views

Coming back to a command I have partially written [duplicate]

Often I find myself partway through writing a long command (or chain of commands) and realise I need to run another command before I can finish typing out this current one. Examples Sometimes, I... ...
-1
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1answer
32 views

How to test for the existence of a directory even if it is a symlink [closed]

if [[ ! -d ~/.abc ]]; then return 1 fi The code above always fail with return code 1. I created the folder ~/.abc by doing ln -s ~/path/to/the/actual/abc/folder ~/.abc. In the other word, it is ...
2
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3answers
468 views

remove a host from the completion list for ssh in zsh

I once had some hosts named 'myhost', 'myhost1', etc. And now all those except 'myhost3' become invalid. I removed those from /etc/hosts and ~/.ssh/known_hosts, but zsh still completes them for me. Is ...
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4answers
921 views

How to cd automatically after git clone?

I want to automatically cd to the directory created by the clone command after I git cloned something. That is, without writing anything additional just git clone $url that the shell will somehow ...
6
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1answer
374 views

Why ZSH ends a line with a highlighted percent symbol?

I've noticed this on occasion with a variety of applications. I've often thought it was because the output was cancelled early (ctrl+c, for example) or something similar, and zsh is filling in a new ...
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3answers
3k views

Is it possible to include file in config file of zsh? How?

I'd like to have a file eg. f with only zsh aliases (pureness reasons). Then I'd like to include f file in my .zshrc file, so that the aliases defined in f are visible in .zshrc. Is it possible? If ...
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2answers
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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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2answers
418 views

Can I make `rm` interactive only when using globbing? (in either bash or zsh or both)

Whenever I rm multiple items at once with shell globbing and there's even the slightest possibility that the pattern expands to more than I expect it to, I always try to remember to add -i, but (of ...
8
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1answer
117 views

Why does brace expansion range use two dots instead of three (ellipsis)?

I finally understood/discovered why I never got to using bash's (and also zsh's) brace expansion range properly: the syntax is {1..10} instead of what I assumed to be an ellipsis, i.e. {1...10}. May ...
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3answers
3k views

Using OR patterns in shell wildcards

Contents of my dir are $ ls -lrt total 0 -rw-r--r-- 1 user1 admin 19 Oct 8 12:31 night.txt -rw-r--r-- 1 user1 admin 19 Oct 8 12:31 noon.txt -rw-r--r-- 1 user1 admin 38 Oct 8 12:31 day.txt I ...
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5answers
157 views

How can I use a wildcard to match just files, not directories?

I have a folder called home/homeLife I have a file called home1 home2 and home3 stored in /home I want to move all files that start with home* to home/homeLife/.. I typed mv home* /home/homeLife ...
3
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1answer
27 views

Zsh gpg2 autocompletion

I am using zsh with oh-my-zsh on OSX. I installed gnupg2 from homebrew giving me the executable gpg2. Unfortunately zsh auto completion appears to only support gpg (even though that executable is not ...
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25 views

zsh git command auto-complete add extra origin to the git branch name

After I clone a git repository locally, I want to switch branch to, says, 'ABCD'. $ git branch -a * master remotes/origin/ABCD remotes/origin/HEAD -> origin/master remotes/origin/master $ ...
15
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1answer
765 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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0answers
17 views

Is there a better to find out the script location which is part of a zprezto module?

I am writing a custom module to extend the zprezto framework for myself. The goal is to be able to start a tmux with proper configuration by name. Here is the code of the init.zsh of my custom module: ...
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3answers
2k views

Is there a way to add a directory to my PATH in zsh only if it's not already present?

Is there an easy way in zsh to add a directory to my PATH only if it's not already present? (or, more generally, any environment variable). I've tried: PATH+=/my/directory ... but if that's ...
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3answers
3k views

How do you “disable” oh-my-zsh (and zsh) without uninstalling it?

I was trying new dev environments including zsh and oh-my-zsh. Now that I have installed oh-my-zsh, it starts by default on my terminals (iTerm2 and terminal) always start with zsh and with the ...
1
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1answer
50 views

Ctrl-Arrow does not work anymore after installing Prezto

I have this in my .inputrc: "\e[A": history-search-backward "\e[B": history-search-forward set show-all-if-ambiguous on set completion-ignore-case on # mappings for Ctrl-left-arrow and ...
2
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1answer
37 views

Combining zsh’s tab completion with case insensitivity

I have zsh 5.0.7 configured to use case-insensitive tab completion with zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}' The problem I’m having is that this case insensitivity often leads ...
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4answers
16k views

Passing named arguments to shell scripts

Is there any easy way to pass (receive) named parameters to a shell script? For example, my_script -p_out '/some/path' -arg_1 '5' And inside my_script.sh receive them as: # I believe this ...
4
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1answer
124 views

Tab autocompletion of accented characters with oh-my-zsh doesn't work

I am not able to properly display autocompleted filenames that contain accented characters like ã in my shell configuration of zsh and oh-my-zsh. I've created a filename cão.txt to demonstrate this ...
0
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1answer
43 views

How to turn on tab completion in zsh/prezto?

I have installed prezto and trying out zsh. However tab completion is not on by default. What is the best way to enable tab completion in prezto?
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0answers
24 views

Why does select-word-style stop me from using backward-kill-word for leading whitespace?

If I have just some whitespace at be beginning of my zsh prompt, I can usually ^W (backward-kill-word) it away. However, as soon as I load select-word-style - even if I don't select any special style ...
3
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1answer
67 views

Why is `setopt nohup` required to make `nohup watch` work in zsh?

In zsh, setopt nohup seems to be required to make nohup work, as follows: # nohup does not work without setopt nohup ➜ /tmp zsh ➜ /tmp nohup watch ls & [1] 31556 nohup: ignoring input and ...
0
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1answer
26 views

Is there a valid way of exporting a variable across different shells?

For some reasons, Im using ksh and zsh in my scripts and returning to -bash, I need to use already set variable values in the spawned shells, writing it to some temp file and using that didn't look ...
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0answers
43 views

How can I complete a -N numeric parameter?

I'm writing an autocomplete script for supervisorctl. Is it possible to complete a numeric parameter such as -6, -999 etc? Currently my call to _arguments looks like, which doesn't work: _arguments ...
2
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1answer
67 views

terminal converts first letter to uppercase

After a $ vagrant ssh into a Centos 7 VM, - If I type a command in the VM terminal that uses zsh shell, the first letter gets uppercased. How can I stop this behaviour? I briefly looked at $ stty ...
3
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1answer
62 views

Filename expansion from date ranges

Consider dates in the ISO 8601 format i.e. ‘YYYY-MM-DD’, e.g. 2015-01-28, and say we have a folder with files of the form: AAAA_<date>_BBBB I am looking for a glob pattern in zsh (or Bash) ...
2
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1answer
60 views

Multi-month view in calendar (cal) in OS X

I am hoping to run some of the commands listed in this article, e.g.: cal -3 which is supposed to show me the last month, this month, and next month. This command does not work in OS X. $ cal -3 ...
1
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1answer
122 views

Redirection differences between &> >& and 2>&1

On this SO thread and a few other threads I have seen the following commands for redirecting stdout and stderr to a file. Are they all equivalent? Is there any difference between them? command1 ...
4
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2answers
852 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 ...
2
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2answers
79 views

Export Command History into a Shell Script

Often I have complicated installation procedures to follow, like having to build dependencies for buildtools, to build dependencies for the application I wish to install from source. Once I have done ...
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4answers
6k views

Bash Auto-Completion feature for SSHing into Different Hosts

I have big list of servers which I normally ssh to all the time. Is there any way using bash or zsh so that I can keep the list of hostname and bash auto-completion goes through the file and gives me ...
12
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1answer
6k views

Command history in Zsh

How does Zsh keep track of command history? I see two files in my home directory: .zhistory and .zsh_history. What is the difference between them? The files seem to contain all of my history. Does ...
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2answers
66 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 ...
1
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1answer
38 views

When using zsh tab-completion, Ignore CDPATH if a local file or directory matches

I love Z shell's tab completion with CDPATH, but sometimes it's overkill. I'd like it to only kick in as a fall-back if nothing in the local directory matches. For instance, I was just in ...
1
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2answers
53 views

Why does zsh allow name to be null in ${name:-word}?

From zsh documentation: ${name-word} ${name:-word} If name is set, or in the second form is non-null, then substitute its value; otherwise substitute word. In the second form name may ...
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6answers
1k views

Do we have more history for cd?

cd - can move to the last visited directory. Can we visit more history other than the last one?
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66 views

ls .. doesn't work properly with symlinks

I have directories set up a bit like this ~/code ~/code/src ~/code/build -> /path/to/somewhere/else That last one's a symlink. If I do this cd ~/code/build ls .. then I get the listing for ...
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2answers
110 views

Compatibility scripting: Save $? for use later

I would like to write a small part of a script that saves the error status, executes some other code, and sets the error status to the original error status. In Bash it looks like this: << some ...
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1answer
68 views

Every time I run tmux, new ssh-agent child process is started (zshell)

Every time I start tmux or split tmux, new instance of ssh-agent is started ("Agent pid XXXX" appears on the top), which is quite annoying because I have to type the key password every time I want to ...
2
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2answers
470 views

Building zsh without admin priv: No terminal handling library found

I am trying to install Zsh without root privileges on a Linux machine. I downloaded the source tarball and run: ./configure --prefix=<my_installation_path> but then I got: configure: ...
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4answers
5k views

Is it recommended to use zsh instead of bash scripts?

Can I assume that enough people have zsh installed to run scripts with a #!/usr/bin/env zsh as shebang? Or will this make my scripts un-runnable on too many systems? Clarification: I’m interested ...
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6answers
3k views

When do you use brace expansion?

I understand what brace expansion is, but I don't know how best to use it. When do you use it? Please teach me some convenient and remarkable examples if you have your own tip.
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3answers
1k views

Home key not working in terminal

I am using GNOME Terminal 2.7.3 and zsh 4.3.9 (x86_64-unknown-linux-gnu) Home and End are not working. Nothing happens and nothing gets displayed when I press them. but they work when I press shift + ...