Try using just the owner if no group.
    
    sudo chown -R user: /usr/local/var/log/couchdb
 

`illegal group name` actually means that the group you&#39;re specifying (the `couchdb` after the colon -- the first `couchdb` is the user) doesn&#39;t exist.  You need to either create the group, stop specifying a group, or specify a group that exists.

I need to display a number with commas and a decimal point.  

Eg: 
Case 1 : Decimal number is 432324 (This does not have commas or decimal points).&lt;br&gt;
Need to display it as: **432,324.00**.&lt;br&gt;
Not:  432,324

Case 2 : Decimal number is 2222222.22 (This does not have commas).&lt;br&gt;
Need to display it as: **2,222,222.22**

I tried `ToString(&quot;#,##0.##&quot;)`, but it is not formatting it correctly.

Format a number with commas and decimals in C# (asp.net MVC3)

I often want to write commands like this (in `zsh`, if it&#39;s relevant):

    find &lt;somebasedirectory&gt; | \
        grep stringinfilenamesIwant | \
        grep -v stringinfilesnamesIdont | \
        xargs dosomecommand

(or more complex combinations of greps)

In recent years `find` has added the `-print0` switch, and xargs has added `-0`, which allow handling of files with spaces in the name in an elegant way by null-terminating filenames instead, allowing for this:

    find &lt;somebasedirectory&gt; -print0 | xargs -0 dosomecommand

However, `grep` (at least the version I have, GNU grep 2.10 on Ubuntu), doesn&#39;t seem to have an equivalent to consume **and** generate null-terminated lines; it has `--null`, but that only seems related to using `-l` to output names when searching in files directly with grep.

Is there an equivalent option or combination of options I can use with grep? Alternatively, is there an easy and elegant way to express my pipe of commands simply using find&#39;s `-regex`, or perhaps Perl?

Is there a grep equivalent for find&#39;s -print0 and xargs&#39;s -0 switches?

I&#39;m trying to run the following command in Terminal: 

    chown -R couchdb:couchdb /usr/local/var/log/couchdb

However, I keep getting this message:

    chown: couchdb: illegal group name

I am using mac osx (mountain lion) and I have command line tools installed. I really don&#39;t know very much about unix, but I&#39;ve been googling the illegal group name error and haven&#39;t turned up anything that would help. What am I overlooking? Any additional resources you think might be helpful also appreciated.

  

chown illegal group name (mac os x)

I'm trying to run the following command in Terminal:
<pre><code class="hljs language-perl">chown -R couchdb:couchdb /usr/local/var/log/couchdb
</code></pre>
However, I keep getting this message:
<pre><code class="hljs language-vbnet">chown: couchdb: illegal group name
</code></pre>
I am using mac osx (mountain lion) and I have command line tools installed. I really don't know very much about unix, but I've been googling the illegal group name error and haven't turned up anything that would help. What am I overlooking? Any additional resources you think might be helpful also appreciated.

Consider the following AppleScript:

    on is_running(appName)
        tell application &quot;System Events&quot; to (name of processes) contains appName
    end is_running

    set safRunning to is_running(&quot;Safari&quot;)
    if safRunning then
        tell application &quot;Safari&quot;
          -- Stuff I only want executed if Safari is running goes here.
        end tell
        return &quot;Running&quot;
    else
        return &quot;Not running&quot;
    end if

The problem: when I run this via the `osascript` command line utility, if Safari is not running, it gets launched and the script reports &quot;Running&quot;.  This is not the behaviour I desire or would expect.  Note that it works as desired/expected when run within AppleScript Editor.

Is this an `osascript` bug / known issue?  Or is it somehow intended behaviour for reasons I&#39;m missing?  Can anyone get it to work as desired?  (BTW I&#39;m running OSX 10.7.5; I can&#39;t see how to get `osascript` to report a version number).

If you comment out the `tell` / `end tell` lines, it behaves as I&#39;d expect: if Safari is not running, it doesn&#39;t launch it, and prints &quot;Not running&quot;.  So it _seems_ to me like the `tell` is what&#39;s causing Safari to be launched, but it doesn&#39;t need to be actually executed, just present in the script...?  For a while I wondered if maybe this was just how `tell` is supposed to work, but since it *doesn&#39;t* work like this in AppleScript Editor, I guess not...

In fact, here&#39;s another, madder, version with similar behaviour:

    on is_running(appName)
        tell application &quot;System Events&quot; to (name of processes) contains appName
    end is_running

    set safRunning to is_running(&quot;Safari&quot;)
    return safRunning
    if false then
        tell application &quot;Safari&quot;
        end tell
    end if

This still always launches Safari, even though `tell` is inside an `if false` block after the return statement!  (But again, this is fine in AppleScript Editor.)

BTW, this behaviour isn&#39;t limited to Safari, but it also isn&#39;t universal:

* Affected apps include: Safari, TextEdit, iPhoto, AppleScript Editor, iTerm, ...
* Non-affected apps include: Google Chrome, iTunes, Preview, Mail, Terminal, Address Book, Echofon, ...

So, does anyone have any ideas about how I might fix or route around this?  Is it an `osascript` bug?  Or am I missing something about AppleScript&#39;s semantics?

For context: I&#39;m trying to write a script (to be embedded/called from some python) which queries open browsers for the URLs of any tabs they have open; I&#39;ve got it all working fine *except* that it always launches Safari, whether it&#39;s open or not.  I&#39;ve boiled down that undesirable behaviour to the simple test case shown above.  I&#39;m not aware of any way to run this script from python without using `osascript`, other than [appscript](http://appscript.sourceforge.net/), which I don&#39;t want to use because [it&#39;s no longer developed/supported/recommended](http://appscript.sourceforge.net/status.html).

Many thanks for all inputs / insights!

How to check in AppleScript if an app is running, without launching it - via osascript utility

How do I find out where MySQL is installed on Mac OS X 10.7.9? I have MAMP installed so I presume that it is bundled with this install?


Find out where MySQL is installed on Mac OS X

In Terminal when I use `.subl`

It returns `-bash: .subl: command not found`

Anyone know how to open Sublime Text 3 from the command line in macOS?

Open Sublime Text from Terminal in macOS

As title reads, how to locate the git config file in Mac? Not sure how to find it. Need to set 

    git config --global http.postBuffer 524288000

Need some guidance on finding it..



How to locate the git config file in Mac

Trying to setup postgres with the postgres mac app and hit this error, which I haven&#39;t been able to solve. Any thoughts?

        ImportError: dlopen(/Users/Craig/pyenv/mysite/lib/python2.7/site-packages/psycopg2/_psycopg.so, 2): Library not loaded: @executable_path/../lib/libssl.1.0.0.dylib
      Referenced from: /Applications/Postgres.app/Contents/MacOS/lib/libpq.dylib
      Reason: image not found

Psycopg2 image not found

I&#39;m looking at functions such as `connect()` and `bind()` in C sockets and notice that they take a pointer to a `sockaddr` struct. I&#39;ve been reading and to make your application AF-Independent, it is useful to use the `sockaddr_storage` struct pointer and cast it to a `sockaddr` pointer because of all the extra space it has for larger addresses.

What I am wondering is how functions like `connect()` and `bind()` that ask for a `sockaddr` pointer go about accessing the data from a pointer that points at a larger structure than the one it is expecting. Sure, you pass it the size of the structure you are providing it, but what is the actual syntax that the functions use to get the IP Address off the pointers to larger structures that you have cast to `struct *sockaddr`?

It&#39;s probably because I come from OOP languages, but it seems like kind of a hack and a bit messy.

Reasoning behind C sockets sockaddr and sockaddr_storage

I have written a code in python which uses / to make a particular file in a folder, if I want to use the code in windows it will not work, is there a way by which I can use the code in Windows and Linux.

In python I am using this code:

    pathfile=os.path.dirname(templateFile)
    rootTree.write(&#39;&#39;+pathfile+&#39;/output/log.txt&#39;)

When I will use my code in suppose windows machine my code will not work.

How do I use &quot;/&quot; (directory separator) in both Linux and Windows?

How to use &quot;/&quot; (directory separator) in both Linux and Windows in Python?

EDIT:

I would like to make a recommendation that parsing colors is a generally ill-conceived idea.

Part of why i wanted it was so I can both parse it and pass it along in my own script output. This is... okay, but it would probably be saner to use porcelain or some such and re-build the colored parts myself!

Original question follows.

-------

I like to see color because my scripting is robust enough (so far) to handle the color codes. It does seem like I&#39;m going against the grain here, but I honestly don&#39;t see what the big deal is about having to parse stuff like escape codes in scripts. If colors help for interactive use, why wouldn&#39;t they help in script use where I might be aggregating data and crunching even more data than I would manually? Wouldn&#39;t colors be *even more important*?

Anyway, I have a neat little shell script I wrote that munges `git status` output, and i&#39;m just looking to make this script keep the colors intact. My global git config is set so that the lists of changed and untracked files show up in color in the git status. Unfortunately unlike `git diff` there is no option for forcing color for `git status` that I can find. 

To be abundantly clear, this is the issue: 

    $ git status

produces perfect output, but (excerpt from my script follows)

    git status | sed &quot;s/^#/\x1b[34m#[0m/&quot;

produces no colored `git status` output, and you can even see here that I&#39;m explicitly converting the leading hash-characters to blue because it helps highlight the different regions of output from my script. 

Does anyone know how to get it to put out the colors? Is there maybe a standard program I can use that can be used as a &quot;fake terminal&quot; STDIN/STDOUT pipe? I am in fact also working on a pty pseudoterminal tool so I could certainly make use of that for this purpose, but it&#39;s a rather heavy-handed solution (and not ready for use yet as I haven&#39;t finished building it). 

  [1]: https://github.com/unphased/shell-utilities/blob/master/find-git-repos

Force &quot;git status&quot; to output color on the terminal (inside a script)

Related: https://stackoverflow.com/questions/352098/how-to-pretty-print-json-from-the-command-line

Is there a (unix) shell script to format XML in human-readable form?

Basically, I want it to transform the following:

    &lt;root&gt;&lt;foo a=&quot;b&quot;&gt;lorem&lt;/foo&gt;&lt;bar value=&quot;ipsum&quot; /&gt;&lt;/root&gt;

... into something like this:

    &lt;root&gt;
        &lt;foo a=&quot;b&quot;&gt;lorem&lt;/foo&gt;
        &lt;bar value=&quot;ipsum&quot; /&gt;
    &lt;/root&gt;



How to pretty print XML from the command line?

I would like to have a script run every 5 minutes let&#39;s say starting from 13:02 so I can have another script runs every 5 minutes but starting from 13:04 so the second script runs two minutes after the start of the first job. How can I achieve this?

How can I run a cron job every 5 minutes starting from a time other than 0 minutes?

When using **GNU Screen** we can work with **scrollback buffer** also known as **&quot;copy mode&quot;** using the `Ctrl+a+[` command. 

In there we can copy text to the **copy buffer** by pressing `space` selecting the text and pressing `space` again. 

**Is there some way to copy this text from screen copy buffer to the X clipboard?**

In my case I&#39;m using Ubuntu 12.04 with gnome and Xorg.

How to copy the GNU Screen copy buffer to the clipboard?

I am encrypting data with openSSL using RSA encryption, which works fine. My understanding of RSA is, that encrypting the same data with the same public key will always give you the same result ([as stated here][1] or [here][2]). 

However, using openssl I get different results every time I repeat the encryption. 
For example:  

    ➜  ~  echo &#39;30&#39; | openssl rsautl -encrypt -inkey pub.pem -pubin  | shasum
          11b6e058273df1ebe0be5e0596e07a6c51724ca0  -

    ➜  ~  echo &#39;30&#39; | openssl rsautl -encrypt -inkey pub.pem -pubin  | shasum
          05cb82595f7429ef196189f4e781088597d90eee  -

So why is the output not unique? Is it because I got the RSA encryption wrong or because openssl does some additional magic? 


Actually I am trying to design a database which stores only RSA encrypted data. I would like to do searches on the hashsums of the encrypted information, which is impossible if the encryption procedure by itself is not unique. 
 

  [1]: http://www.learner.org/courses/mathilluminated/units/1/textbook/07.php
  [2]: https://stackoverflow.com/questions/5883451/are-rsa-signatures-unique

Why does RSA encrypted text give me different results for the same text

How would I go about installing 2 versions of jQuery **using bower**? I want to have v2.0  as well as 1.9.1 for browser support fallback

The issue I&#39;m having is that if you run  `bower install jquery#1.9.1 jquery#2.0.0` the first version gets overwritten by the second because they are the same component

Bower: Install 2 versions of jQuery

I have a folder in my subdomain which is created through WHM so the owner of that subdomain is not the owner of main domain. 

I want to change the owner of one of the folders of subdomain to domain owner. I tried this, but when I check with `winscp` it shows owner as 500.

  
      chown users:user /home/xyz/somnething/photo/

I&#39;ve tried to change from winscp also, but there is no option for winscp, so I&#39;ve logged in as root using putty and ran the command from above, but it doesn&#39;t help and I am unable to upload any file to subdomain from the main domain, as it returns error &quot;permission denied&quot;.


    $ ls -l /home/xyz/somnething/photo/
    total 8 
    drwxr-xr-x 2 sujit sujit 4096 Feb 21 23:39 ./ 
    drwxr-x--- 5 rohan nobody 4096 Feb 22 02:28 ../ 

I want to give the ownership of rohan to sujit to have rights to upload file from sujit domain to subdomain rohan

**Update:**

Now it is changing owner to 500 

changing the owner of folder in linux

My Dockerfile creates a directory, chown&#39;s it, and then lists the directory afterwards.  The directory is still owned by root.  Why is that?

Here is the Dockerfile:
 
    FROM ubuntu:precise
    RUN useradd -d /home/testuser -m -s /bin/bash testuser
    RUN mkdir -p /var/local/testrunner/logs
    VOLUME [&quot;/var/local/testrunner/logs&quot;]
    RUN grep testuser /etc/passwd
    RUN grep root /etc/passwd
    RUN chown -R testuser:testuser /var/local/testrunner/logs
    RUN ls -ld /var/local/testrunner/logs 

Here is the output from &quot;docker build&quot;:

    Sending build context to Docker daemon 10.24 kB
    Sending build context to Docker daemon 
    Step 0 : FROM ubuntu:precise
     ---&gt; ab8e2728644c
    Step 1 : RUN useradd -d /home/testuser -m -s /bin/bash testuser
     ---&gt; Using cache
     ---&gt; 640f12671c86
    Step 2 : RUN mkdir -p /var/local/testrunner/logs
     ---&gt; Using cache
     ---&gt; bf7756fd5b1f
    Step 3 : VOLUME [&quot;/var/local/testrunner/logs&quot;]
     ---&gt; Using cache
     ---&gt; 65c73ee76c20
    Step 4 : RUN grep testuser /etc/passwd
     ---&gt; Using cache
     ---&gt; db72fff0b965
    Step 5 : RUN grep root /etc/passwd
     ---&gt; Running in ebff78df7a9a
    root:x:0:0:root:/root:/bin/bash
     ---&gt; ead0ff704a59
    Removing intermediate container ebff78df7a9a
    Step 6 : RUN chown -R testuser:testuser /var/local/testrunner/logs
     ---&gt; Running in c925f67b2ab4
     ---&gt; 253132be935e
    Removing intermediate container c925f67b2ab4
    Step 7 : RUN ls -ld /var/local/testrunner/logs
     ---&gt; Running in 978bc66aa47e
    drwxr-xr-x 2 root staff 4096 Oct  1 15:15 /var/local/testrunner/logs

Docker version 1.2.0, build fa7b24f

The host runs Ubuntu 12.04, but with a 3.13.0-36-generic kernel.

Content Type	Original Author	Original Content on Stackoverflow
Question	egon	View Question on Stackoverflow
Solution 1 - Macos	jackotonye	View Answer on Stackoverflow
Solution 2 - Macos	chaos	View Answer on Stackoverflow

chown illegal group name (mac os x)

Macos Problem Overview

Macos Solutions

Solution 1 - Macos

Solution 2 - Macos

Is there a grep equivalent for find's -print0 and xargs's -0 switches?

Format a number with commas and decimals in C# (asp.net MVC3)

Attributions