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

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112 views

Modifying zsh globbing patterns to use with cp

I'm trying to write a script to copy files recursively from a particular folder except files A.extn, B/*.extn and C/* where B and C are directories and extn is just some generic extension. This is ...
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2answers
125 views

How can a zsh script test whether it is being sourced?

The accepted answer for a similar question for bash does not seem to work for zsh. In fact, if I copy basically the same code given in that answer, to produce the script #!/usr/bin/zsh - # test.sh ...
2
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1answer
71 views

zsh - check arguments of a command before executing it

Question: Is there an easy way how I can teach zsh to check the command line before executing it? I know that I can completely wrap a specific program with an extra script, but this is not what I want ...
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1answer
487 views

zsh: Is it worth the switch from bash? Is it the time? [closed]

I have been a bash user for years now. However, I find that zsh is increasingly gaining momentum. I came up with the following questions: Is zsh really becoming that popular? Will it compete with ...
1
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1answer
90 views

How to avoid parsing /etc/* files

When starting my shell with e.g. exec zsh from the command line, how can I have it not parse any /etc/ files? I read in the zsh guide that when a user starts a zsh shell, it processes the following ...
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2answers
78 views

Logging all input and output in zsh on demand

Is there any way to activate/deactivate the logging of all input and output on a zsh session? I am using oh-my-zsh with a customized prompt with colors, etc. and I would like to preserve all of these ...
1
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1answer
67 views

Directory stack order in zsh

I am working on Zsh 5.0.2 (latest stable version), and I noticed that: dirs -v and cd -<TAB> show a different list of directories (or at least directories in different order). Moreover, ...
5
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2answers
347 views

Preventing zsh from using aliases in CWD (prompt)

I have the following personalized theme activated with oh-my-zsh (latest version of zsh and oh-my-zsh): local return_code="%(?..%{$fg[red]%}%? %{$reset_color%})" local ...
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2answers
674 views

Excluding a directory name in a zsh recursive glob

I'm running zsh on Linux under setopt extended_glob ksh_glob glob_dots. I'm looking for something easy to type on the command line, with no portability requirements. I'm looking at a source code tree, ...
0
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2answers
56 views

Command in a variable [duplicate]

I am trying to run a statement where the name of the command is in a variable. For example: my_command='/path/to/some/command' $my_command -f foo -b bar -s something else But the above does not ...
1
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1answer
36 views

difference between omz “plugins” and “themes”?

What exactly is the difference, operationally, between plugins and themes in oh-my-zsh? I.e. how would things break (if at all) if a plugin were instead put among the themes, or a theme among the ...
9
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1answer
3k views

What should/shouldn't go in .zshenv, .zshrc, .zlogin, .zprofile, .zlogout?

The title says it all. I'm looking for guidelines on what one should and should not include in the various startup files for zsh. I understand the order of sourcing of these files, and the ...
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4answers
291 views

zsh is in /usr/bin, but also in /bin, what is the difference?

The /etc/shells says it has zsh installed in /bin/zsh, but also in /usr/bin/zsh. brgr@envy17:~$ cat /etc/shells # /etc/shells: valid login shells /bin/sh /bin/dash /bin/bash /bin/rbash /usr/bin/tmux ...
4
votes
1answer
144 views

Per-directory history in zsh

I am happily using zsh since a while now, and I am quite satisfied with my history settings, which are: # Write to history immediately setopt inc_append_history # History shared among terminals ...
2
votes
2answers
276 views

Why is `kill -s INT <zsh PID>` behaving differently from `Ctrl-C`?

Starting with: % donothing () { echo $$; sleep 1000000 } % donothing 47139 If at this point I hit Ctrl-C at the same terminal that is controlling the shell, then the function donothing does indeed ...
2
votes
1answer
189 views

preventing the screen from being cleared when exiting an ssh session

I have rdist set up to push out some of my dot files to all the remote machines that I need to ssh into. I also have zsh as my default shell on all of those machines. When I ssh into a machine and ...
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1answer
69 views

Get zsh to report directory to emacs

From the emacs manual Unlike Shell mode, Term mode does not track the current directory by examining your input. But some shells can tell Term what the current directory is. This is done ...
2
votes
1answer
604 views

dircolors on zsh: Unrecognized keywords: MULTIHARDLINK, RESET & CAPABILITY

I am trying to get the solarized color theme to work in my terminal. I read the instructions here but I get the following dircolors error: dircolors: `/home/avazquez/.dircolors_zsh':90: unrecognized ...
2
votes
3answers
301 views

Treatment of backslashes across shells

How do echo and printf treat backslashes in zsh, bash and other shells? Under zsh I get the following behavior: $ echo "foo\bar\baz" foaaz $ echo "foo\\bar\\baz" foaaz $ echo 'foo\bar\baz' foaaz $ ...
6
votes
4answers
1k 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 ...
10
votes
1answer
471 views

When is double-quoting necessary?

The old advice used to be to double-quote any expression involving a $VARIABLE, at least if one wanted it to be interpreted by the shell as one single item, otherwise, any spaces in the content of ...
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3answers
155 views

Delete all but largest file of specific type

I am trying to organise the album art in my music collection so that only one image is assigned to each folder. My directory structure currently looks like: /path/to/music/Album Name/ ...
3
votes
1answer
167 views

How to print apparently hidden environment variables?

Environment variables can be shown with env; but, some are not shown. For example... echo $EUID might produce as result of 1000 yet env | grep EUID produces no result. What is this type of variable? ...
5
votes
1answer
122 views

ZSH: What's the difference between `.` and `source`?

I used to think that the built-ins . and source are equivalent. This question agrees with me when it comes to bash. However I encountered the following using zsh: desktop➜ ~/pst . env ...
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4answers
947 views

Double and triple substitution in bash and zsh

Follow-up to the background part in this question. In bash I can use {!FOO} for double substitution, in zsh ${(P)FOO}. In both, the old-school (hack-y) eval \$$FOO works. So, the smartest and most ...
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3answers
141 views

${!FOO} and zsh

${!FOO} performs a double substitution in bash, meaning it takes the (string) value of FOO and uses it as a variable name. zsh doesn’t support this feature. Is there a way to make this work the same ...
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2answers
149 views

Different shells for interactive and non-interactive work

Due to constraints at my workplace, the default shell for every user is tcsh, and I am required to use tcsh as my non-interactive shell (i.e. we do most of the environment configuration across ...
1
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1answer
68 views

Displaying ~ for $HOME in zsh prompt

I have my prompt set to the following: PROMPT=%F{reset}[%F{blue}%2/%F{reset}] which displays two parent directories as [foo/bar] However, when I'm in $HOME or one directory deep in $HOME, I'd ...
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1answer
195 views

Switching to another shell without copying environment variables

From tcsh, if I try: exec /home/path/to/my/zsh it works (I enter a Zsh shell) but if I try exec -c /home/path/to/my/zsh I get: -c Command not found How do I switch to my Zsh shell and start ...
5
votes
2answers
119 views

[ vs [[ : which one to use in bash scripts? [duplicate]

The zsh man page, in its section on test (aka [), explicitly advises against using it at all, and urges readers to use [[ whenever possible. The relevant section states: The command attempts to ...
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2answers
187 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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1answer
857 views

oh-my-zsh theme doesn't seem to update unless I re-launch zsh

I've begun making my own oh-my-zsh theme, but I've run into a bit of a problem. I'm trying to change the color of the git output based on the name of the branch, and it works fine except for one ...
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votes
4answers
369 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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0answers
108 views

Navigating through the directory stack in zsh from the command line

In zsh, is there a way to navigate through the history of directories that I have visited (those listed in dirs) when I am typing a command in the command line? For example, say that I start typing ...
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2answers
112 views

How to get “current glob” in zsh

I want to do something like: $ convert [a,b,c,d,e].png -resize 50% <current_match>_half.png How can I do this? Is there some variable that stores the current match? I couldn't find anything in ...
5
votes
2answers
364 views

How can I create a function in zsh that calls an existing command with the same name?

How can I write a function in zsh that invokes an existing command with the same name as the function itself? For example, I've tried this to illustrate my question: function ls { ls -l $1 $2 $3 ...
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votes
2answers
315 views

How can I change the umask for one command only?

How can I interactively execute a command in Linux (zsh, if it matters) with a different umask from the default, for one command only? Perhaps a combination of commands combined in a single line? The ...
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0answers
27 views

Make zkbd ignore $DISPLAY

Is it possible to make zkbd ignore $DISPLAY variable? I have set up when I log in to different X sessions and it is annoying if suddenly I need to reenter/copy configuration (and I have no idea why ...
0
votes
1answer
861 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 ...
2
votes
2answers
297 views

Screen: “Cannot exec /my/path/to/zsh” with local shell

Whenever I try to run screen under a Zsh shell that I compiled under my home directory, I get the following error: > screen Cannot exec '/my/path/to/zsh/bin/zsh' The Z shell is perfectly ...
3
votes
1answer
138 views

How can I configure zsh to let it explain to me where I can retrieve an executable instead of saying file not found?

In the default configuration of bash in ubuntu, when you type the name of a software which is not installed, bash explains how to install it if the executable if it exists, or how to install an ...
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1answer
96 views

Combining parameter expansion with modifiers in zsh

Say I have the following $f1=/some/path $f2=/some/subpath $f3=/some/other/subpath If I try: test1=${$f1/$f2/${f3:t}} zsh complains with bad substitution. However: test2=${f3:t} works well. ...
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vote
1answer
105 views

How to more easily specify tasks for batch, using command prefix tool?

The tool batch that comes with the atd daemon is pretty useful in principle, running commands only when the system utilisation falls below a certain level (by default, 1.5). However, using it (and ...
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vote
2answers
429 views

OS X setting environment variables

I have OSX 10.8.2 with ZSH as my shell and iTerm as a terminal (don't know if the last thing is relevant). I have to mention that I'm relatively new to OSX. I'm trying to set up some environment ...
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1answer
97 views

zsh completion: getting file names from a specific directory

OK, a little background: I use a Mac, and I do as much as possible in the CLI. In particular, I frequently pop in a USB stick, cp or mv a file over, and then immediately wish to eject (unmount and ...
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votes
2answers
151 views

Aliasing 'python' to 'ipython' only when 'python' is run without args

I thought it would be nice to have an alias (in ~/.zshrc) to have 'python' aliased to 'ipython' ONLY when 'python' is run without args (otherwise, programs won't launch). First of all, how to express ...
1
vote
1answer
74 views

How to make ZSH tab completion work with two tabs

I saw a question like this on here, but the answer didn't work for me. I'm trying to set up tab completion and I want it that if I have two files fileA and fileB and I type fil<tab> it first ...
8
votes
1answer
399 views

What is the difference between which and where

What is the difference between where and which shell commands? Here are some examples ~ where cc /usr/bin/cc /usr/bin/cc ~ which cc /usr/bin/cc and ~ which which which='alias | ...
3
votes
2answers
194 views

Avoiding temporary files in zsh [duplicate]

Possible Duplicate: Shell programming, avoiding tempfiles Say I have the file data.txt, and the command cmd. cmd takes one argument, a file. Or, you could use stdin. Now, say data.txt is ...
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2answers
381 views

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 ...