Pear Code

Colors in Git

Tue, 08 May 2012 20:46:03 +0200

$ git config --global color.ui true

How to send POST with curl?

Sun, 06 May 2012 09:54:22 +0200

$ curl -d "param1=value1&param2=value2" http://example.com/resource.cgi

$ curl -F "fileupload=@filename.txt" http://example.com/resource.cgi

For a RESTful HTTP POST containing XML or JSON, use this:

$ curl -X POST -d @filename http://example.com/path/to/resource

First things you need to do after Ubuntu installation

Sat, 28 Apr 2012 14:46:00 +0200

First things you need to do after Ubuntu installation:
- sudo apt-get install compizconfig-settings-manager (turn on panel autohide and change icons size)
- sudo apt-get install vim
- sudo apt-get install pysdm (partitions automount; Storage Device Manager)

Write your own and extend this list ;)

MemoryError and numpy / matplotlib

Thu, 26 Apr 2012 12:02:00 +0200

If you see MemoryError in your application running within Apache (in my case with wsgi [mod_wsgi]) it is probably because of SELinux.

You have to allow httpd to execute code from the /tmp directory

root # setsebool httpd_tmp_exec on

More info: http://docs.fedoraproject.org/en-US/Fedora/13/html/Managing_Confined_Services/sect-Managing_Confined_Services-The_Apache_HTTP_Server-Booleans.html

Problem with eAccelerator and Doctrine 2

Wed, 25 Apr 2012 12:04:44 +0200

When you see message “Class X is not a valid entity or mapped super class” you can solve this problem with adding two lines to the .htaccess file:

php_flag eaccelerator.enable 0
php_flag eaccelerator.optimizer 0

There is also article which describes problem mentioned above.

How to set/change host in Symfony 2 command?

Thu, 05 Apr 2012 10:02:41 +0200

$host = $this->getContainer()->getParameter('host');
$this->getContainer()->get('router')->getContext()->setHost($host);

$this->getContainer()->get('router')->getContext()->setScheme('https');
$this->getContainer()->get('router')->getContext()->setBaseUrl('/web');

scp dir / file with spaces

Tue, 21 Feb 2012 14:21:52 +0100

scp user@host:'"/home/user/file with spaces"' .

Python SMTP Debugging Server

Tue, 07 Feb 2012 14:42:16 +0100

python -m smtpd -n -c DebuggingServer localhost:1025

Google chart API (images) doesn’t allow negative values for line chart. Is it a joke?

Mon, 30 Jan 2012 17:48:00 +0100

Google chart API (images) doesn’t allow negative values for line chart. Is it a joke?

Adding a startup script in Ubuntu / Debian

Mon, 30 Jan 2012 09:18:00 +0100

Create script in /etc/init.d:

case "$1" in
    start)
        #something here
    ;;
    stop)
        killproc -TERM /usr/local/bin/noip2
    ;;
    *)
        echo "Usage: $0 {start|stop}"
        exit 1
esac
exit 0

Add script to rc.d:

update-rc.d script defaults

Using INSERT IGNORE with MySQL to prevent duplicate key errors

Sun, 22 Jan 2012 18:55:01 +0100

INSERT IGNORE INTO mytable
    (primaryKey, field1, field2)
VALUES
    ('abc', 1, 2),
    ('def', 3, 4),
    ('ghi', 5, 6);

Colorized tail

Sun, 22 Jan 2012 18:53:51 +0100

tailcolor() {
    tail -f -n5000 $1 | perl -pe "s/$2/\e[1;31;43m$&\e[0m/g"
}

Display available memory on Linux / Ubuntu

Sun, 22 Jan 2012 18:52:50 +0100

cat /proc/meminfo

Compare Directories using Diff in Linux

Sun, 22 Jan 2012 18:51:43 +0100

Use this command:

diff -qr --exclude=.svn dir1 dir2|sort

-q = print result only where files are different

-r = recursive

—exclude = use it if something has to be excluded

How to trim non-breaking space in PHP

Sun, 22 Jan 2012 18:49:11 +0100

Use this snippet:

$trim = trim($text, " \xC2\xA0\n\t\r\0\x0B");

\xC2\xA0 is non-breaking space (alt+space in mac os x)

How to create .tar.gz and .tar.bz2 files

Sun, 22 Jan 2012 18:47:07 +0100

tar.gz:

$ tar -zcvf archive_name.tar.gz directory_to_compress

tar.bz2:

$ tar -jcvf archive_name.tar.bz2 directory_to_compress

How to exclude dir in grep

Sun, 22 Jan 2012 18:44:32 +0100

Add parameter —exclude-dir to the grep command:

grep -R --exclude-dir=example_dir "something" *

How To Clone or Copy a VirtualBox Virtual Disk

Sun, 22 Jan 2012 18:42:02 +0100

VBoxManage clonehd "DiskToClone.vdi" "ClonedDisk.vdi"

VBoxManage internalcommands setvdiuuid "CopiedDisk.vdi"

Terminal colors in Python

Sun, 22 Jan 2012 18:29:35 +0100

It depends on what platform you are on. The most common way to do this is by printing ANSI escape sequences. For a simple example, here is some python code:

class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'

    def disable(self):
        self.HEADER = ''
        self.OKBLUE = ''
        self.OKGREEN = ''
        self.WARNING = ''
        self.FAIL = ''
        self.ENDC = ''

To use code like this, you can do something like:

print bcolors.WARNING + "Warning: No active frommets remain. Continue?" + bcolors.ENDC

Source: http://stackoverflow.com/questions/287871/print-in-terminal-with-colors-using-python

Python pretty print

Sun, 22 Jan 2012 18:27:12 +0100

Simply “print” show objects in ugly format. If you want to see object nice formatted use instruction below:

from pprint import pprint

data = data = [(1, {'a':'A', 'b':'B', 'c':'C', 'd':'D'}), (2, {'e':'E', 'f':'F', 'g':'G', 'h':'H', 'i':'I', 'j':'J', 'k':'K', 'l':'L'})]
pprint(data, indent=4, depth=3)

[   (1, {   'a': 'A', 'b': 'B', 'c': 'C', 'd': 'D'}),
    (   2,
        {   'e': 'E',
            'f': 'F',
            'g': 'G',
            'h': 'H',
            'i': 'I',
            'j': 'J',
            'k': 'K',
            'l': 'L'})]

The amount of indentation added for each recursive level is specified by indent; the default is one.

The number of levels which may be printed is controlled by depth. By default, there is no constraint on the depth of the objects being formatted.

Pear Code

Colors in Git

How to send POST with curl?

First things you need to do after Ubuntu installation

MemoryError and numpy / matplotlib

Problem with eAccelerator and Doctrine 2

How to set/change host in Symfony 2 command?

scp dir / file with spaces

Python SMTP Debugging Server

Google chart API (images) doesn’t allow negative values for line chart. Is it a joke?

Adding a startup script in Ubuntu / Debian

Using INSERT IGNORE with MySQL to prevent duplicate key errors

Colorized tail

Display available memory on Linux / Ubuntu

Compare Directories using Diff in Linux

How to trim non-breaking space in PHP

How to create *.tar.gz and *.tar.bz2 files

How to exclude dir in grep

How To Clone or Copy a VirtualBox Virtual Disk

Terminal colors in Python

Python pretty print

How to create .tar.gz and .tar.bz2 files