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

learn more… | top users | synonyms (1)

1
vote
1answer
31 views

strange setopt behavior

For certain options, setopt doesn't have an effect. ➜ ~ setopt | grep history extendedhistory ➜ ~ setopt appendhistory ➜ ~ setopt | grep history # appendhistory apparently didn't get set ...
6
votes
2answers
6k views

How to display the name of the current Virtualenv?

I'm using virtualenv, virtualenvwrapper, zsh, oh-my-zsh, terminator, on Crunchbang. I'm trying to display the name of the current virtualenv like so workon example (example)... I've tried many ...
4
votes
1answer
128 views

How to create string with invalid unicode characters, in Zsh?

For some testing purposes I need a string with invalid unicode characters. How to create such string in Zsh?
5
votes
2answers
4k views

Spaces as line breaks from inline for loop command

Someone care to enlighten me as to why the spaces in the first command seem to be interpreted as line breaks? Also occurs substituting print for echo. $for l in $( find *.txt -exec head -1 {} \; ); ...
48
votes
5answers
10k views

How to use `which` on an aliased command?

Like most users, I have a bunch of aliases set up to give a default set of flags for frequently used programs. For instance, alias vim='vim -X' alias grep='grep -E' alias ls='ls -G' The problem is ...
2
votes
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 ...
4
votes
1answer
316 views

/etc/paths in OS X and other Unices

Is /etc/paths read by every shell that I run in OS X? For example, if I use zsh, will it parse /etc/path to populate $PATH? What exactly is the sequence that OS X follows to populate $PATH? Does it ...
6
votes
3answers
402 views

${#array} vs ${#array[@]}

As far as I can tell both ${#array[@]} and ${#array} evaluate to the number of elements in $array. Is there any reason for preferring the longer form (${#array[@]})?
2
votes
3answers
407 views

Why rm exclude using ! doesn't work in zsh?

I have 10 files in current directory: 10test 1test 2test 3test 4test 5test 6test 7test 8test 9test I want to remove all file except 2test and 3test, but I run command rm !(2test|3test) doesn't ...
3
votes
1answer
87 views

move files based on pattern with zsh/zmv

How could I move files to subdirectories based on the common part of their names? For example, with files named as comment_LastName.pdf and comment_LastName.md and sub-directories named as ...
0
votes
1answer
47 views

How to create multiple dot files using brace expansion?

I want to create a bunch of dot files using brace expansion, but it doesn't work: touch .{a..h} the result is a file .{a..h} is created instead of .a .b .c ...
0
votes
2answers
85 views

Unexpected prompt in zsh

Can someone explain to me why I am getting this shell prompt when I'm in the /home directory, and how to get rid of it?  I am using zsh. I want it to display only the following: user@host ~ % but ...
9
votes
7answers
321 views

Check variable is an array in Bourne like shell?

In Bourne like shell which support array variable, we can use some parsing to check if variable is an array. All commands below were run after running a=(1 2 3). zsh: $ declare -p a typeset -a a ...
2
votes
2answers
213 views

Shell valid function name characters

Using extended Unicode characters is (no-doubt) useful for many users. Simpler shells (ash (busybox), dash) and ksh do fail with: tést(){ echo 34; } tést But bash, mksh, lksh, and zsh seem to ...
0
votes
0answers
32 views

Fill the name of last-run program in Bash

Suppose I execute some command: ls -l ~/some_dir. I would like to create an alias, such that I could execute man with the name of the last-run program as a parameter, i.e., man ls in this case. ...
0
votes
0answers
126 views

How to change theme with zsh

I am using this configuration on my mac(unix) to customize my shell. I am using zsh instead of bash and there are too many things along with zsh. This .dotfile configuration contains vim, zsh, git, ...
1
vote
2answers
50 views

how to grep for packages on basis of uncompressed file-size?

In Debian when you look at a package, you get lot of info. Including the uncompressed file size of the package. Is there a way to grep through the file-listing so that packages appear either from ...
7
votes
3answers
4k views

key bindings table?

Do we have a key bindings table that translates all the various ways of referring to a key press? I'm using zsh, but I presume that if there was such a table it would work for any shell. The reason I ...
9
votes
4answers
185 views

Right-to-left shell brace expansion

In zsh (and other shells), if I include an argument like (for example): {a,b,c}{d,e,f} brace expansion turns it into: ad ae af bd be bf cd ce cf For my purposes, the argument order is important, ...
5
votes
3answers
112 views

Is “Arithmetic Expansion” the expected action on vars inside `[[` tests?

This script: a=2 [[ "$a" -eq 2 ]] && echo yes1 [[ $a -eq 2 ]] && echo yes2 [[ a -eq 2 ]] && echo yes3 [[ "a" -eq 2 ]] && echo yes4 Does not work in dash (and ...
3
votes
2answers
78 views

Shebang line for “run with $SHELL”

I'm looking for what to put on my_zsh_script.sh's "shebang line" that would have the same effect, portably, as $SHELL my_zsh_script.sh IOW, I looking for the valid equivalent of #!$SHELL or ...
19
votes
0answers
625 views

How to combine zsh autocomplete for wrapper function arguments and existing command

I work mostly in gvim and many terminals. Originally, I preferred to open all my files in a single vim instance. To that end I used an alias to open files from my terminals in the current 'vim ...
0
votes
0answers
31 views

Setting tmux session title in zsh

There was a similar question about screen regarding this here, but I was unable to get this working with tmux. From what I understood printing a string with prepended with \033k and appended with ...
6
votes
1answer
158 views

Replace current process by its coprocess/child

I have a program P that expects to receive "Hello" and output "Why?" before providing a feature. This feature is used by other programs that are not aware that it is common courtesy to start a ...
16
votes
4answers
4k views

Share aliases and PATH setting between zsh and bash

The shell that I normally use is zsh. I have several aliases to enable color in some programs such as ls and grep. I've also set my custom path so that I can execute programs in non-standard place ...
5
votes
1answer
97 views

In zsh, what's the difference between &! and &|?

In my adventures with disown, I also discovered that in zsh, program &! starts and immediately backgrounds and disowns the program, so you can close the shell without the program getting a SIGHUP. ...
2
votes
2answers
38 views

Forcing the expansion of a global alias in part of a word

I have a couple of scripts /tmp/foo/bar.sh and /tmp/foo/baz.sh, the look like this: # /tmp/foo/bar.sh alias -g __FILE__='${(%):-%x}' alias -g __DIR__='${${(%):-%x}%/*}' printf "sourcing %s\n" ...
2
votes
0answers
20 views

On using $hash_array[$(global_alias)]

Identical code works on one system, fails on another: % zsh --version zsh 5.0.7 (x86_64-pc-linux-gnu) % typeset -A frobozz % alias -g foo='echo xyz' % frobozz[$(foo)]=9 % echo ${(kv)frobozz} xyz 9 ...
1
vote
0answers
32 views

`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), ...
2
votes
0answers
45 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
votes
1answer
41 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 ...
6
votes
7answers
264 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 ...
4
votes
4answers
209 views

Prefer file types in command line

Often I have to annotate multiple pdf documents using xournal. If I start with a directory of "fresh" pdf files, I just open them all with xournal: for f in *pdf; do xournal $f&; done When I ...
7
votes
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 ...
1
vote
2answers
125 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 ...
2
votes
2answers
83 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 ...
2
votes
1answer
271 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 ...
13
votes
2answers
461 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, ...
2
votes
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?
2
votes
4answers
90 views

Copy files to new directory only if name of file is in an array

I'm not much of a zsh buff but I imagine this should be an easy layup for someone: I can bulk copy files from sourcedir to targetdir with the following: $ find sourcedir -type f -exec cp {} ...
0
votes
1answer
238 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 ...
2
votes
0answers
203 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 ...
77
votes
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 ...
3
votes
1answer
43 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. ...
4
votes
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 ...
0
votes
1answer
232 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 ...
5
votes
4answers
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: ...
2
votes
0answers
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 ...
0
votes
1answer
134 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 ...
9
votes
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 ...