- `chmod  +w &lt;directory&gt;` or `chmod a+w &lt;directory&gt;` - Write permission for user, group and others

- `chmod u+w &lt;directory&gt;` - Write permission for user

- `chmod g+w &lt;directory&gt;` - Write permission for group

- `chmod o+w &lt;directory&gt;` - Write permission for others

`chmod 777 &lt;directory&gt;` 

This will give you execute/read/write privileges.  You can play with the numbers to finely tune your desired permissions.

Here is the [wiki][1] with great examples.


  [1]: http://en.wikipedia.org/wiki/Chmod

To make the parent directory as well as all other sub-directories writable, just add -R

    chmod -R a+w &lt;directory&gt;

    chmod 777 &lt;directory&gt;

this not change all ,just one file

    chmod -R a+w &lt;directory&gt;

this ok

Execute at Admin privilege using `sudo` in order to avoid permission denied
(Unable to change file mode) error. 

    sudo chmod 777 &lt;directory location&gt;

 

I&#39;m wondering if there&#39;s a reason that there&#39;s no `first(iterable)` in the Python built-in functions, somewhat similar to `any(iterable)` and `all(iterable)` (it may be tucked in a stdlib module somewhere, but I don&#39;t see it in `itertools`). `first` would perform a short-circuit generator evaluation so that unnecessary (and a potentially infinite number of) operations can be avoided; i.e.

    def identity(item):
        return item
    
    def first(iterable, predicate=identity):
        for item in iterable:
            if predicate(item):
                return item
        raise ValueError(&#39;No satisfactory value found&#39;)

This way you can express things like:

    denominators = (2, 3, 4, 5)
    lcd = first(i for i in itertools.count(1)
        if all(i % denominators == 0 for denominator in denominators))

Clearly you can&#39;t do `list(generator)[0]` in that case, since the generator doesn&#39;t terminate.

Or if you have a bunch of regexes to match against (useful when they all have the same `groupdict` interface):

    match = first(regex.match(big_text) for regex in regexes)

You save a lot of unnecessary processing by avoiding `list(generator)[0]` and short-circuiting on a positive match.

Why is there no first(iterable) built-in function in Python?

C# has syntax that allows you to specify the argument index in a string format specifier, e.g.:

    string message = string.Format(&quot;Hello, {0}. You are {1} years old. How does it feel to be {1}?&quot;, name, age);

You can use arguments more than once and also omit arguments that are provided from being used. [Another question][1] mentions the same formatting for C/C++ in the form of `%[index]$[format]`, e.g. `%1$i`. I have not been able to get NSString to **fully** respect this syntax, because it does behave well when *omitting arguments* from the format. The following does not work as expected (EXC_BAD_ACCESS because it attempts to dereference the `age` parameter as a NSObject*):

    int age = 23;
    NSString * name = @&quot;Joe&quot;;
    NSString * message = [NSString stringWithFormat:@&quot;Age: %2$i&quot;, name, age];

The positional arguments are respected only if there are no missing arguments from the format (which seems to be an odd requirement):

    NSString * message = [NSString stringWithFormat:@&quot;Age: %2$i; Name: %1$@&quot;, name, age];

All these calls work properly in OS X:

    printf(&quot;Age: %2$i&quot;, [name UTF8String], age);
    printf(&quot;Age: %2$i %1$s&quot;, [name UTF8String], age);

Is there a way of accomplishing this using NSString in Objective-C / Cocoa? It would be useful for localization purposes.

  [1]: https://stackoverflow.com/questions/462580/string-format-for-c

Is there a way to specify argument position/index in NSString stringWithFormat?

How can I make a directory writable, from the OS X terminal?

How can I make directory writable?

<p>How can I make a directory writable, from the OS X terminal?</p>


I would like to check to see if I have an Internet connection on iOS using the [Cocoa Touch][1] libraries or on macOS using the [Cocoa][2] libraries.

I came up with a way to do this using an `NSURL`. The way I did it seems a bit unreliable (because even Google could one day be down and relying on a third party seems bad), and while I could check to see for a response from some other websites if Google didn&#39;t respond, it does seem wasteful and an unnecessary overhead on my application.

    - (BOOL)connectedToInternet {
        NSString *URLString = [NSString stringWithContentsOfURL:[NSURL URLWithString:@&quot;http://www.google.com&quot;]];
        return ( URLString != NULL ) ? YES : NO;
    }

Is what I have done bad, (not to mention `stringWithContentsOfURL` is deprecated in iOS 3.0 and macOS 10.4) and if so, what is a better way to accomplish this?

  [1]: https://en.wikipedia.org/wiki/Cocoa_Touch
  [2]: https://en.wikipedia.org/wiki/Cocoa_(API)


How can I check for an active Internet connection on iOS or macOS?

I&#39;m interested in verifying if a given iPhone static library has been built for ARM or Intel.  

It&#39;s more curiosity than anything. Is there some kind of Mac OS X or BSD specific tool to do this? This [post][1] gives an example in Linux.

  [1]: https://stackoverflow.com/questions/267941/determine-target-architecture-of-binary-file-in-linux-library-or-executable

How do I determine the target architecture of static library (.a) on Mac OS X?

How do I get the name of the active user via the command line in OS X?

Borderline ServerFault question, but I&#39;m *programming* some shell scripts, so I&#39;m trying here first :)

Most *nixes have a command that will let you pipe/redirect output to the local clipboard/pasteboard, and retrieve from same.  On OS X these commands are

	pbcopy, pbpaste	

Is there anyway to replicate this functionality while SSHed into another server?  That is, 

1. I&#39;m using Computer A.  
2. I open a terminal window
3. I SSH to Computer B
4. I run a command on Computer B
5. The output of Computer B is redirected or automatically copied to Computer A&#39;s clipboard.

And yes, I know I could just (shudder) use my mouse to select the text from the command, but I&#39;ve gotten so used to the workflow of pipping output directly to the clipboard that I want the same for my remote sessions. 

Code is useful, but general approaches are appreciated as well.

How to send data to local clipboard from a remote SSH session

I&#39;ve seen a Mac OS X git demo online in which it&#39;s configured to have multiple colors.

For example, his prompt is amber, his `ls` directory is purple and his `git diff` output has ~ 4 colors (pink, light green, red, pale yellow).

Can you tell me how can I configure Mac OS X terminal to achieve that?  It&#39;s definitely Mac OS X Terminal.app, not iTerm.


How to configure Mac OS X term so that git has color?

Is there a way to detect whether `sys.stdout` is attached to a console terminal or not? For example, I want to be able to detect if foo.py is run via:

    $ python foo.py  # user types this on console

OR

    $ python foo.py &gt; output.txt # redirection
    $ python foo.py | grep ....  # pipe

The reason I ask this question is that I want to make sure that my progressbar display happens only in the former case (real console).


How do I detect whether sys.stdout is attached to terminal or not?

I&#39;m using Ubuntu 9.04 x64 and when I write:

    gnome-terminal --tab

At the terminal, I expect it to open a new tab in the same terminal window. But it opens a new window instead.

I found out that its intention is to open a new tab in a new window, i.e., if I write:

    gnome-terminal --tab --tab

It will open a new window with two tabs.

So, the question is, how can I open a new tab in the _current_ window using a command in `gnome-terminal`?




How to open a new tab in GNOME Terminal from command line?

I have always found startup profile files of other people both useful and instructive about the language. Moreover, while I have some customization for [Bash][1] and [Vim][2], I have nothing for R.

For example, one thing I always wanted is different colors for input and output text in a window terminal, and maybe even syntax highlighting.

  [1]: https://en.wikipedia.org/wiki/Bash_%28Unix_shell%29
  [2]: https://en.wikipedia.org/wiki/Vim_%28text_editor%29




Expert R users, what&#39;s in your .Rprofile?

I would like to copy all files out of a dir except for one named Default.png. It seems that there are a number of ways to do this. What seems the most effective to you?

BASH copy all files except one

I&#39;m trying to do the opposite of &quot;https://stackoverflow.com/questions/1312922/detect-if-stdin-is-a-terminal-or-pipe-in-c-c-qt&quot;.

I&#39;m running an application that&#39;s changing its output format because it detects a pipe on STDOUT, and I want it to think that it&#39;s an interactive terminal so that I get the same output when redirecting.

I was thinking that wrapping it in an `expect` script or using a `proc_open()` in PHP would do it, but it doesn&#39;t.

Any ideas out there?


Content Type	Original Author	Original Content on Stackoverflow
Question	Goyo	View Question on Stackoverflow
Solution 1 - Macos	Alan Haggai Alavi	View Answer on Stackoverflow
Solution 2 - Macos	samoz	View Answer on Stackoverflow
Solution 3 - Macos	northpole	View Answer on Stackoverflow
Solution 4 - Macos	Osei-Bonsu Christian	View Answer on Stackoverflow
Solution 5 - Macos	ze zhang	View Answer on Stackoverflow
Solution 6 - Macos	Tadele Ayelegn	View Answer on Stackoverflow

How can I make directory writable?

Macos Problem Overview

Macos Solutions

Solution 1 - Macos

Solution 2 - Macos

Solution 3 - Macos

Solution 4 - Macos

Solution 5 - Macos

Solution 6 - Macos

Is there a way to specify argument position/index in NSString stringWithFormat?

Why is there no first(iterable) built-in function in Python?

Attributions