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

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2
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2answers
180 views

Use Netrw or Nerdtree in Zsh/Bash to select a file BY BROWSING?

Often I find myself in the shell, wanting to insert a filename into a lengthy command. I'd like to hit a shortcut, and use Netrw or Nerdtree to browse for a file or directory, and have it pasted in ...
1
vote
2answers
35 views

Why is $COLUMNS not listed by either env or set? (on zsh)

I can $ echo $COLUMNS 95 and get a result, but if I env | grep COLUMNS or set | grep COLUMNS I get nothing. (Update: I just discovered that the behavior is different on bash. I'm using ...
1
vote
1answer
51 views

Why does oh-my-zsh pick .zhistory instead of .zsh_history for the value of HISTFILE?

I tried googling about this but couldn't find any clue: Why does oh-my-zsh pick .zhistory instead of .zsh_history for the value of HISTFILE? Seems like .zsh_history is what more people would expect.
1
vote
2answers
940 views

Is it possible to source again .bashrc and .zshrc AND remove functions once inside them without restarting?

I had a function inside .zshrc that I removed. Now, when I try to source it, it indeed sources it, but doesn't remove the function that once was inside .zshrc from memory. Is there a way to remove ...
5
votes
2answers
4k views

zsh: set TERM=screen-256color in tmux, but xterm-256color without tmux

I need my $TERM to be xterm-256color outside of tmux (in "plain" terminal with zsh), but screen-256color inside tmux. First I tried: add export TERM='xterm-256color' to my ~/.zshrc. add set -g ...
67
votes
1answer
4k 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 ...
0
votes
2answers
96 views

How can I expand all variables at the command line in Zsh?

In an earlier question, specific to bash, I asked How can I expand a relative path at the command line, with tab completion? I liked @Mikel's answer that mentioned using Ctrl+Alt+e to expand all ...
2
votes
2answers
511 views

Update process name in shell, is it possible?

In C/C++ it is in general possible to do strcpy(argv[0], "new process name"). It's a hack used in malicous software to hide real process name. Is such operation possible via shell? What I want to do ...
3
votes
1answer
403 views

Export multiple options in $GREP_OPTIONS

I use ZSH with "OH MY ZSH". In "OH MY ZSH" variable $GREP_OPTIONS exports with multiple value: $ echo $GREP_OPTIONS --color=auto --exclude-dir=.cvs --exclude-dir=.git --exclude-dir=.hg ...
2
votes
2answers
195 views

How to read from a named pipe after the writer process exits?

I want to use named pipes as asynchrnonous task queues (JMS-like, perhaps). For example, suppose a client sends some data that I wish to insert into a database, but I want the client to disconnect ...
10
votes
4answers
2k views

How to silently get an empty string from a glob pattern with no matches

Say I have a folder with three files: foo1 foo2 bar 1. If I run list_of_files=$(print foo*) echo $list_of_files I get: foo1 foo2 2. If I run list_of_files=$(print bar*) echo $list_of_files ...
0
votes
0answers
46 views

How to show gemset in ZSH-prompt if rvmrc is used?

There are several ZSH themes that presents the gemset in the prompt by calling "rvm-prompt". For example, the "gallois" theme: example My question is if it is possible to only show this if the ...
1
vote
0answers
20 views

autojump : favor folders that share the most parents with current directory

Say I have following folders hierarchies : /home/kray/virtualenv/dev1/myproj/bin /home/kray/virtualenv/dev2/myproj/bin And i type in a console: $ pwd ...
2
votes
1answer
451 views

oh-my-zsh style completion for directory/file paths without oh my zsh

I had oh-my-zsh installed for a while, and I could type a full path using only one letter, then press tab to case-insensitively autocomplete the whole thing. For example, if I had a file at ...
1
vote
2answers
70 views

Map Return with no other input to an alias

I would like to use Return with no other input to run an aliased command in the shell. Is this possible in Bash or Zsh? In other words, when I enter an empty command line, I want to run one specific ...
2
votes
3answers
163 views

How to sort filenames with spaces in them and concatenate the files?

I have the misfortune of dealing with filenames that contain spaces. I want to concatenate files of which filenames contain spaces. I also want to sort the filenames numerically. Obviously the ...
4
votes
1answer
173 views

Are there problems with hyphens in functions, aliases, and executables?

In my testing (in Bash and Z Shell), I saw no problems with defining functions or aliases or executable shell scripts which have hyphens in the name, but I'm not confident that this will be okay in ...
1
vote
1answer
116 views

Incrementing/decrementing a number in a file from a ( zsh ) script

From a script ( running multiple times simultaneously ), I would like create a file something like: echo "0" > /tmp/count Then I would like to do three functions. incr /tmp/count decr ...
0
votes
0answers
95 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 ...
0
votes
0answers
276 views

python error using an executable with Z shell

I'm getting this error from the Unix Z shell (I'm on Mac): python: posix_spawn: /System/Library/Frameworks/Python.framework/Versions/2.6/Resources/Python.app/Contents/MacOS/Python: No such file or ...
5
votes
3answers
323 views

Shell/Bash script: Properly drop privileges

Okay, first of all, I know this question has been asked a few times here, but the answers given did not entirely satisfy me. The situation is the following: I have written many scripts to automate ...
6
votes
3answers
5k views

Having tmux load by default when a zsh terminal is launched

My current workflow is: CTRL+SHIFT+T to launch a new terminal window. That starts a new zsh terminal. Type tmux to start tmux. How can I have tmux load by default with a new terminal window?
0
votes
2answers
52 views

zsh function output removes leading whitespace

Consider the following two commands and their outcome: 14:57 : echo $(echo " ABC") ABC 14:57 : echo " ABC" ABC Version of zsh: zsh 5.0.5 (x86_64-apple-darwin14.0) Why does the first one ...
3
votes
1answer
90 views

How to print the code of a shell function in terminal?

I am using zsh and I have defined few utility shell function in some shell scripts, few of them called from ~/.zshrc, so let's assume that the we don't know the location of these functions. One ...
3
votes
3answers
53 views

How to see manpage of previous command?

For example if I did a curl -F 'clbin=@some-image.jpg' https://clbin.com. How do I man curl easily?
1
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0answers
114 views

Powerline bash prompt not colorized in tmux

The bash/zsh commandline prompt is not displaying colors in tmux, even though I managed to get the powerline itself working (with colors). The prompt works fine in pure bash/zsh. I am getting the ...
1
vote
2answers
525 views

zsh doesn't work correctly in Mint

I successfully installed zsh, change config on my old, but it's not working properly. I don't know how this feature calls. When i write something - sudo for instance, and press ↑ (arrow up) it ...
1
vote
1answer
37 views

Key to comment out the current line and keep editing it in zsh

On Bash I was using ESC # after Ctrl+R to prefix a # to the found line and keep it in the terminal, something similar for zsh?
1
vote
1answer
80 views

Sourcing files in ZSH doesn't work

Because my .zshrc got quite big I chose to just source other files, but I encounter some errors after logging in to ssh now: /home/rob1nn/.r_inc/exports:13: parse error near `\n' ...
2
votes
2answers
130 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 ...
6
votes
4answers
25k views

Change font in echo command

Is it possible to change the font attributes of the output of echo in either zsh or bash? What I would like is something akin to: echo -n "This is the font: normal " echo -n $font=italic "italic," ...
4
votes
1answer
723 views

Zsh theme guides [closed]

Does anyone know good tutorials (or books) for what goes into writing a theme?
19
votes
4answers
6k views

make my zsh prompt show mode in vi mode

I use bindkey -v (for bash-ers set -o vi I think that works in zsh too) or vi(m) mode. but it bugs me that I don't have any visual cue to tell me whether I'm in insert mode or command mode. Does ...
1
vote
4answers
115 views

What is '“^[b” backward-word' When trying to configure ZSH?

I am on a MAC, and I am trying to figure out shortcuts for my ZSH running on Iterm2. When I type bindkey in the shell, I see (among other mappings), the following: "^[b" backward-word "^[f" ...
4
votes
1answer
375 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 ...
1
vote
1answer
275 views

Installing oh-my-zsh without git

How can I install oh-my-zsh from master on the machine behind firewall and without git and internet access?
14
votes
4answers
2k 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 ...
2
votes
2answers
1k views

Extending history search in zsh

How to extend Ctrl+R search in zsh? It cannot find entry despite it is in history file. Edit: My .zshrc: setopt AUTO_CD setopt CORRECT_ALL setopt EXTENDED_GLOB # History SAVEHIST=10000 ...
8
votes
2answers
658 views

Precedence of && vs & in bash and zsh

Answering this question I discovered a very funny (and subtle) difference between behavior in bash and zsh: In bash: romano@RRyS:~$ pwd /home/romano romano@RRyS:~$ alias x="cd /bin && ...
4
votes
2answers
255 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 ...
2
votes
1answer
163 views

Stop zsh from completing parent directories

I am using zsh with grml's zshrc as a base. As part of my work I access network path regulary (e.g NFS. AFS.) If I write /a/long/network/path/on/the/other/side/of/the/world press TAB twice it is ...
1
vote
0answers
24 views

history - bash, dash, zsh and .profile [duplicate]

For a long time I have been wondering about the existence of many shells in GNU/Linux. To make the question a bit focused I have used only three shells - bash, dash and zsh. From wikipedia articles ...
0
votes
3answers
1k views

Read first line of a command's output. Command connects me to a remote terminal

Part 1 Say I have a command my_command that outputs multiple lines. I would like to capture the first line of my_command's output as soon as it's ready in a script, while keeping my_command ...
3
votes
3answers
570 views

Where are zsh and mksh incompatible with bash?

To what extent can other POSIX-compatible shells function as reasonable replacements for bash? They don't need to be true "drop-in" replacements, but close enough to work with most scripts and support ...
2
votes
1answer
141 views

How can I keep the trailing slash after choosing a directory from the zsh completion options?

In zsh, when I press tab 2 times to enter the "completion menu", select a directory and press enter, it first adds the chosen directory with a trailing slash to the command, but as soon as I press ...
2
votes
2answers
2k views

JSON parsing on the shell

How can I parse JSON output on the shell? For example, Amazon Web Services provides a CLI to retrieve the status of your instances: $ aws ec2 describe-instances <my_instance_id> But the ...
1
vote
1answer
77 views

zparseopts with associative array in older version of zsh

I am confused by the differing behavior of zparseopts in two different versions of zsh. Basically I am trying to set a list of default option values in an associative array and overwrite these ...
3
votes
1answer
110 views

Apply parameter expansion flags to string or array literal in zsh

Sometimes I'd like to apply parameter expansion flags to a string or array literal in zsh. As an example use case, say that I want to split some comma-delimited string $arglist on commas, but prepend ...
43
votes
2answers
6k views

Rebuild auto-complete index (or whatever it's called) and binaries in $PATH cache in zsh

After installing new software, an already opened terminal with zsh won't know about the new commands and cannot generate auto-complete for those. Apparently opening a new terminal fix the problem, but ...
1
vote
2answers
63 views

In zsh how to set an alias for `less` to get stderr output?

I find that there is a "global alias" for zsh. so when I set alias -g L='| less' command L will be replaced with command | less. But it seems that it cannot work with stderr output when I set ...