    unset -f z

Will unset the function named z.  A couple people have answered with:

    unset z

but if you have a function and a variable named z only the variable will be unset, not the function.

In Zsh:

    unfunction z

That&#39;s another (arguably better) name for `unhash -f z` or `unset -f z` and is consistent with the rest of the family of:

- `unset`
- `unhash`
- `unalias`
- `unlimit`
- `unsetopt`

When in doubt with such things, type `un&lt;tab&gt;` to see the complete list.

_(Slightly related: It&#39;s also nice to have functions/aliases like `realiases`, `refunctions`, `resetopts`, `reenv`, etc to &quot;re-`source`&quot; respective files, if you&#39;ve separated/grouped them as such.)_

Once it is compiled, is there a difference between:

    delegate { x = 0; }

and

    () =&gt; { x = 0 }

?

delegate keyword vs. lambda notation

I installed a windows service using installUtil.exe. 

After updating the code I used installUtil.exe again to install the service w/o uninstalling the original version first.
 
When I now try to uninstall the service, installUtil.exe completes the uninstall successfully, but the service still appears. 

If I try to change its properties, I receive the message &#39;service is marked for deletion&#39;. 

How can I force the deletion (preferrably w/o restarting the server)?

How to force uninstallation of windows service

I have done this:

    $ z() { echo &#39;hello world&#39;; }

How do I get rid of it?

How do I delete/remove a shell function?

I have done this:
<pre><code class="hljs language-javascript">$ z() { echo 'hello world'; }
</code></pre>
How do I get rid of it?

I&#39;m writing a bash script that needs to delete old files.

It&#39;s currently implemented using :

    find $LOCATION -name $REQUIRED_FILES -type f -mtime +1 -delete

This will delete of the files older than 1 day.

However, what if I need a finer resolution that 1 day, say like 6 hours old? Is there a nice clean way to do it, like there is using find and -mtime?



How to delete files older than X hours

I&#39;m trying to write a small script to change the current directory to my project directory:

    #!/bin/bash
    cd /home/tree/projects/java

I saved this file as proj, added execute permission with `chmod`, and copied it to `/usr/bin`. When I call it by:
`proj`, it does nothing. What am I doing wrong?



Why can&#39;t I change directories using &quot;cd&quot; in a script?

I have a complex command that I&#39;d like to make a shell/bash script of.  I can write it in terms of `$1` easily:

    foo $1 args -o $1.ext

I want to be able to pass multiple input names to the script. What&#39;s the right way to do it?  

And, of course, I want to handle filenames with spaces in them.

How to iterate over arguments in a Bash script

I want to transform `/foo/bar/..` to `/foo`

Is there a bash command which does this?

----
Edit: in my practical case, the directory does exist.

How do you normalize a file path in Bash?

I am trying to write a bash script for testing that takes a parameter and sends it through curl to web site.  I need to url encode the value to make sure that special characters are processed properly.  What is the best way to do this?  

Here is my basic script so far:
  

    #!/bin/bash
    host=${1:?&#39;bad host&#39;}
    value=$2
    shift
    shift
    curl -v -d &quot;param=${value}&quot; http://${host}/somepath $@



How to urlencode data for curl command?

When I type `uname -a`, it gives the following output.

    Linux mars 2.6.9-67.0.15.ELsmp #1 SMP Tue Apr 22 13:50:33 EDT 2008 i686 i686 i386 GNU/Linux

How can I know from this that the given OS is 32 or 64 bit?

This is useful when writing `configure` scripts, for example: what architecture am I building for?




How to determine whether a given Linux is 32 bit or 64 bit?

When starting a django application using `python manage.py shell`, I get an InteractiveConsole shell - I can use tab completion, etc.

    Python 2.5.1 (r251:54863, Apr 15 2008, 22:57:26) 
    [GCC 4.0.1 (Apple Inc. build 5465)] on darwin
    Type &quot;help&quot;, &quot;copyright&quot;, &quot;credits&quot; or &quot;license&quot; for more information.
    (InteractiveConsole)

When just starting a python interpreter using `python`, it doesn&#39;t offer tab completion.

Can someone tell me what django is doing to give me an interactive console, or what I need to do to start an interactive console without a django app?

How do I add tab completion to the Python shell?

I have a web directory where I store some config files. I&#39;d like to use wget to pull those files down and maintain their current structure. For instance, the remote directory looks like:

    http://mysite.com/configs/.vim/

.vim holds multiple files and directories. I want to replicate that on the client using wget. Can&#39;t seem to find the right combo of wget flags to get this done. Any ideas?

Using wget to recursively fetch a directory with arbitrary files in it

How do I set up a shell script to execute from the Mac OSX dock? It seems that simply creating a shortcut will open the file in my editor. Is there  a flag I need to set somewhere to tell it to run instead of opening it for editing?

Executing Shell Scripts from the OS X Dock?

In [zsh](http://www.zsh.org/), how can I set up the line editor such that `backward-kill-word` stops on a directory separator?  Currently in my bash setup, if I type

    cd ~/devel/sandbox

and then hit `C-w` point will be right after `devel/`.  In my zsh setup, point would be after `cd `.  I&#39;d like to set up zsh so it behaves similarly to bash.

zsh: stop backward-kill-word on directory delimiter

To recognize better the start and the end of output on a commandline, I want to change the color of my prompt, so that it is visibly different from the programs output. As I use zsh, can anyone give me a hint?

How can I change the color of my prompt in zsh (different from normal text)?

I am trying to move to zsh from Bash.

I put my .bashrc directly to my .zshrc, and it caused a lot of errors when I try to use Bash again.

**How can you export your .bashrc to .zshrc?**


How can you export your .bashrc to .zshrc?

I run the following command unsuccessfully
    
    dir

and I get
                   
    zsh: correct &#39;dir&#39; to &#39;gdir&#39; [nyae]? 

**What does [nyae] mean in Zsh?**


What does [nyae] mean in Zsh?

I run the following codes separately as my prompt unsuccessfully in .zshrc. This suggests me that apparently I do not have a program called __git_ps1. It is not in MacPorts.

#1
--

    PROMPT=&quot;$(__git_ps1 &quot; \[\033[1;32m\] (%s)\[\033[0m\]&quot;)\$&quot;$

#2     
--

    PROMPT=&quot;$(__git_ps1 &quot; (%s)&quot;)\$&quot;$

[#3][1]
--


    # Get the name of the branch we are on
    git_prompt_info() {
      branch_prompt=$(__git_ps1)
      if [ -n &quot;$branch_prompt&quot; ]; then
        status_icon=$(git_status)
        echo $branch_prompt $status_icon
      fi
    }
    
    # Show character if changes are pending
    git_status() {
      if current_git_status=$(git status | grep &#39;added to commit&#39; 2&gt; /dev/null); then
        echo &quot;☠&quot;
      fi
    }
    autoload -U colors
    colors
    setopt prompt_subst
    PROMPT=&#39;
    %~%{$fg_bold[black]%}$(git_prompt_info)
    → %{$reset_color%}&#39;


**How can you get a prompt which shows the name of a Git-branch?**

  [1]: http://pastie.org/325104

Content Type	Original Author	Original Content on Stackoverflow
Question	too much php	View Question on Stackoverflow
Solution 1 - Bash	Robert Gamble	View Answer on Stackoverflow
Solution 2 - Bash	Micah Elliott	View Answer on Stackoverflow

How do I delete/remove a shell function?

Bash Problem Overview

Bash Solutions

Solution 1 - Bash

Solution 2 - Bash

How to force uninstallation of windows service

delegate keyword vs. lambda notation

Attributions