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

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887 views

What does : ${param:=value} mean?

I read the following in A User's Guide to the Z-Shell: A synonym for ‘true’ is ‘:’; it’s often used in this form to give arguments which have side effects but which shouldn’t be used — ...
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2answers
137 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. Shell: ZSH if that matters.
3
votes
3answers
79 views

How can I search history with what is already entered at the prompt in zsh?

In zsh, I know that I can search history with Ctrl+r. However, oftentimes I start to type a command directly at the prompt, but then realize I should be searching history. When I hit Ctrl+r, it brings ...
3
votes
0answers
275 views

Gnome-terminal and Zsh: keep current directory on new tab/window

I'm running gnome 3.10.1 on Arch with Zsh. I'm facing that problem that when I create a new tab or window from a terminal window, it resets the current dir to my home dir. I've already tried this: ...
0
votes
1answer
110 views

Start up commads in Lubuntu 2 [duplicate]

After posting my question here, Start up commads in LUBUNTU I got no answer so here it is. I have these 2 commands: xinput --set-prop "Razer Razer DeathAdder" "Device Accel Constant Deceleration" 4 ...
2
votes
2answers
51 views

Make zsh show autocomplete choices even when a possible match is entered

On my current system (openSUSE 12.3 with zsh 5.0.2) the autocomplete function does not give me a choice of possible completions if I have already entered a possible completion match. For example, if ...
3
votes
2answers
157 views

List all dotfiles current directory using zsh

How can I list all dotfiles in a directory using zsh.?
4
votes
1answer
45 views

Zsh completion that is insensitive between `_` and `-`

I don't like typing underscores, and would like to type a dash instead, and have zsh autocompletion treat it like it could be either a dash or an underscore. Is this possible with built-in zsh ...
2
votes
1answer
79 views

Zsh - Disable Tab Insert

I'm trying to configure zsh to closely fit how bash behaves before I fully switch, and one behavior I'm trying to modify in zsh is when it inserts a Tab character. I see how it could be helpful for ...
1
vote
1answer
123 views

zsh delete part of the prompt

When I use reverse history search, then it "eats" a part of my prompt. Sometimes when I type a long command which spans to multi lines, my prompt is also lost. Have anyone experience this situation? ...
10
votes
4answers
473 views

Search for a previous command with the same prefix when I press Up at a shell prompt

Coming from a FreeBSD world I wish to make the Linux terminal behave like FreeBSD one, especially the 9.1 version, basically when you type cd in the terminal and push the "up" arrow you can browse all ...
1
vote
0answers
22 views

How to prevent tmux from reading .profile/.zprofile/.bash_profile [duplicate]

The original question Is it possible to override tmux's default behaviour of executing .[z|bash_]profile files on every new session, window and pane? In other words, I'd like it to only execute ...
0
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0answers
104 views

gdb debugging in Terminal OS X (10.8.5) with zsh - zsh doesn't know gdb

For my studies I have to run a binary unix-program called bomb with gdb. Some time ago I followed the steps on ...
0
votes
2answers
145 views

zsh alias being overridden somehow

I'm on a system running OS X 10.8.5. I recently tried to alias ls to ls -G -la command. I opened up ~/.zshrc, put in the alias, relaunched the terminal, but the change didn't take effect. Upon ...
1
vote
1answer
224 views

Getting “zsh: command not found: time” when running `time` in subshell

I installed ZSH (and Oh-My-ZSH) on a Ubuntu 12.10 64 bit machine a few days ago. I just tried to do: time (time ls) and got this error: zsh: command not found: time ( time ls; ) 0.00s user 0.00s ...
2
votes
2answers
98 views

Zsh possibly adding quotes to variable value (works in bash though)

I'm fairly new to zsh (shifted yesterday from bash) I had a bash function in bash like vl() { cmd=`echo $1 | sed -r 's/(.+):([0-9]+).+/\1 +\2/g'`; vim $cmd } This basically converts a argument ...
5
votes
1answer
67 views

Do not set $? to non-zero on Control+C

My $PS1 in Zsh includes this expression: %(?. %?.) It means «if exit code of previous command ($?) is true, show $?, else show nothing». This is generally useful, but one thing annoys me: shells set ...
6
votes
3answers
105 views

Excluding . and .. from results in find and ls

Is there any way to prevent find and ls -l from listing . and .. in their results? I never care about seeing this result in the output, and it prevents me from effectively piping their output to wc -l ...
1
vote
1answer
47 views

How can I autocomplete each parameter in a different way?

I have a function called load_pg, which is defined like this: load_pg () { pg_restore --verbose --clean --no-acl --no-owner -h localhost -U $1 -d $2 $3 } And I'm trying to autocomplete each ...
7
votes
4answers
6k views

How do I reverse a for loop?

How do I properly do a for loop in reverse order? for f in /var/logs/foo*.log; do bar "$f" done I need a solution that doesn't break for funky characters in the file names.
3
votes
3answers
76 views

Is there something like closures for zsh?

I just decided to try zsh (through oh-my-zsh), and am now playing with precmd to emulate a two-line prompt that has right prompts in more than just the last line. So I clone the default theme, and ...
10
votes
2answers
96 views

Cancel completion, but only completion, in zsh

When a completion function takes a long time, I can interrupt it by pressing Ctrl+C (terminal interrupt key, sends SIGINT) or Ctrl+G (bound to send-break). I am then left with the uncompleted word. ...
3
votes
2answers
88 views

Asynchronous RPROMPT?

A friend of mine posted this on StackOverflow, and I thought we might be more likely to get an answer here. His post refers to speed, but we now know that the python script we are using to parse git ...
3
votes
3answers
352 views

.ssh/config to start remote session in zsh

I would like to start a remote session without typing the following command ssh user@remoteserverip -t zsh I know that I can change the host names in the ~/.ssh/config to simply use something like ...
2
votes
1answer
274 views

zsh broke compose key and special chars

I thought I'd switch to zsh, so I did just that with chsh -s /usr/bin/zsh user, unfortunately, it broke my compose key (unresponsive both in the console and in an X terminal); also, when I read email ...
3
votes
1answer
292 views

First characters of the command repeated in the display when completing

The first two chars were repeated while I use Tab to do completion. In the screenshot below, cd is repeated. I have tried rxvt-unicdoe, xterm, terminator. All these terminal emulators have this ...
3
votes
2answers
45 views

Zsh completion for mounts (/run/media/DISK-LABEL)?

I am looking or zsh functionality to expand disk-labels into mountpoins: Example: I have disk with label DISK-LABEL1 mounted on /run/media/god/DISK-LABEL1. Is there a plugin which expands input ...
3
votes
1answer
1k views

Wrapping a command that includes single and double quotes for another command

I recently learned about watch, but am having trouble making it work with relatively sophisticated commands. For example, I would like to ask watch to run the following command on zsh every three ...
11
votes
4answers
2k views

How to edit command line in full screen editor in ZSH?

In bash, using vi mode, if I hit Esc,v, my current command line is opened in the editor specified by $EDITOR and I am able to edit it in full screen before 'saving' the command to be returned to the ...
2
votes
1answer
84 views

“--noprofile” or “--norc” functionality in zsh?

Short and sweet: Is there a way to accomplish what --noprofile and --norc bash switches do using zsh?
3
votes
1answer
132 views

Why is `xargs bash -ic echo` not the same thing as `xargs echo` or `xargs`?

I expect the command ls -d doc/* | grep -P "<some_pattern>" | xargs bash -ic echo to do the same as: ls -d doc/* | grep -P "<some_pattern>" | xargs echo that is, to give me the files ...
3
votes
4answers
627 views

cp hidden files with glob patterns

Situation : $ mkdir foo && touch foo/.test $ cp foo/* . zsh: no matches found: test/* (or bash : cp: cannot stat ‘test/*’: No such file or directory) I have a directory full of hidden ...
3
votes
1answer
87 views

zsh and COLUMNS

I cannot understand the behavior of the $COLUMNS variable under zsh. Here's an example of the sort of behavior I'm referring to. The script $HOME/cols.sh is the following: echo "COLUMNS=$COLUMNS" ...
0
votes
1answer
45 views

Executing a script in .zshrc

I'm trying to use z (link) to make navigating a little easier. The problem is that I have the following in my .zshrc file, but it doesn't seem to work: export PATH=$PATH:/home/x/z alias ...
1
vote
1answer
85 views

Mysterious repeating of entered command in shell

After booting up my system and logging in (before starting X, I start it manually via startx) I suddenly get the following output after entering a command: $ cmd ;user@host: cmd;cmd;cmd; [output of ...
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0answers
40 views

Write a zsh method the responds to a `cd` command [duplicate]

I'm trying to write a script that will be called when navigating into certain directories. What I'd want is to have a message appear when I enter certain (not every) directories based on what it finds ...
11
votes
1answer
585 views

How does a fork bomb work?

WARNING DO NOT ATTEMPT TO RUN THIS ON A PRODUCTION MACHINE In reading the Wikipedia page on the topic I generally follow what's going on with the following code: :(){ :|:& };: excerpt of ...
1
vote
2answers
120 views

What is sourcing my shell script?

I have a .zshrc and a .zshenv in my home directory. I added a new command to my .zshenv that I discovered was being run at least 3 times. I realized that I was accidentally sourceing it from the ...
13
votes
2answers
570 views

How to background a command chain?

I want to background a command chain like cp a b && mv b c && rm a. I have tried doing cp a b && mv b c && rm a & but this only backgrounds the last process. How ...
2
votes
2answers
307 views

strange “bad file descriptor” error

I've run into a perplexing error that I'd like to understand better. The problem seems to require the presence of a "wrapper" shell function (as described below), so my immediate interest is to find ...
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 ...
0
votes
0answers
39 views

Specifying numeric ranges in zsh history

According to the docs I can tell the zsh history to print lines in a range. The docs say "history [first [last]]" I've tried "history a b" but that gives a too many arguments error. I've also tried ...
2
votes
2answers
94 views

Absolute path to currently-running zsh?

Sometimes the output of ps -p $$ shows the absolute path to the currently-running zsh, % ps -p $$ PID TTY TIME CMD 1027 ttys005 0:00.11 /usr/local/bin/zsh but not always: % ps -p ...
2
votes
0answers
54 views

Git completions for aliases only available after running `git reflog`

I have a few aliases that I want to autocomplete for git, e.g., the following alias gco="git checkout" When I was attempting to add completions for this alias, I looked around in my path and saw ...
3
votes
2answers
111 views

How change prompt of subshell

I'm trying to create a simple script that, among other things, will create a subshell: #!/bin/sh # setup "${@:-$SHELL}" # teardown The question is: I need to change the default prompt, so for ...
2
votes
2answers
346 views

Zip folder without including path to folder and require only one argument

I'm trying to make a zip function that'll do all the steps I typically do when zipping a file or folder. Say my current directory is ~, and I want to zip a folder named Folder1, whose file path is ...
3
votes
3answers
135 views

Persistent shell arguments

I often find myself running a series of commands on a single set of arguments. For example: $ nmap -Pn -sS 192.168.1.5 $ ssh 192.168.1.5 $ curl 192.168.1.5 $ wget -r 192.168.1.5 This can be sped ...
3
votes
2answers
130 views

bash equivalent of zsh's $@[2,$#]

(NB: the motivation for this question is only to improve my bash programming know-how.) I want to know the bash equivalent of zsh expressions such as $@[2,$#], which directly address a range of a ...
1
vote
2answers
109 views

zsh expand-or-complete for all files regardless of command/context

zsh has a feature where command line tab-completion performs context-aware completions, so you can do things like: # Good: $ wget g<tab> # becomes: $ wget gopher:// $ wget --hea<tab> ...
3
votes
4answers
372 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, ...