All commands

This open the cd rom device and close it in a loop

Check if Fail2Ban is running on the system and alert it with a message in the terminal

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22)

(all files & folders on destination server/folder will be deleted)

#!/bin/sh

_HOSTNAME=`hostname`

_HOSTTYPE=`echo $HOSTTYPE`

_MACHINETYPE=`echo $MACHTYPE`

_OSTYPE=`echo $OSTYPE`

_VENDOR=`echo $VENDOR`

_KERNEL=`uname -r | awk -F- '{print $1}'`

_GLIBC=`ls /lib/libc-*.so | awk -F- '/lib/ {print $2}' | awk -F. '{print $1"."$2}'`

_MEM=`cat /proc/meminfo | awk '/MemTotal/ {print $2 $3}'`

_CPU=`cat /proc/cpuinfo | grep 'cpu MHz' | awk '{print $4}'`

echo '=============================='

echo 'HOSTNAME ' $_HOSTNAME

echo 'HOSTTYPE ' $_HOSTTYPE

echo 'MACHINETYPE ' $_MACHINETYPE

echo 'OSTYPE ' $_OSTYPE

echo 'VENDOR ' $_VENDOR

echo 'KERNEL ' $_KERNEL

echo 'GLIBC ' $_GLIBC

echo 'MEM INFO ' $_MEM

echo 'CPU INFO ' $_CPU

echo '=============================='

This command requires the imagemagick libraries and will resize all files with the .jpg extension to a width of 1024 pixels and will keep the same proportions as the original image.

apt-get must be run as root, and it is useless to run it as your own user. So just run it as root. Saves you the "sudo !!" every time you're adding a package.

If your web server is down, this command will periodically attempt to connect to it. If the output is blank, your server is not yet up. If you see HTML, your server is up. Obviously, you need to replace the Google URL with your web server URL...

* 'watch' -- a command for re-executing a command and displaying

the output

* '-n 15' -- tells watch to redo the command every 15 seconds

* 'curl' -- a handy utility for getting the source of a web page

* '-s' -- tells curl to be silent about failing

* '--connect-timeout 10' -- Try to connect for 10 seconds

get subversion diff output without distracting whitespace changes. good for when you are cleaning up code to make sure you didn't change anything important. also useful when working with old code, or someone else's code.

copying files from one server to another using rysnc. Root access need to be allowed on the destination.

Changing a file extension to a new one for all files in a directory.

Changing files ownership in a directory recursivley from a user to another

A useful bash function:

gztardir()

{

if [ $# -ne 1 ] ; then

echo "incorrect arguments: should be gztardir "

else

tar zcvf "${1%/}-$(date +%Y%m%d-%H%M).tar.gz" "$1"

fi

}

This removes the type prefix used in Hungarian notation (v. bad) for PHP variables. Eg. variables of the form $intDays, $fltPrice, $arrItems, $objLogger convert to $days, $price, $Items, $logger.

If you are in /begin/path/with/XX/pattern

cd XX YY

will change your current directory to

/begin/path/with/YY/pattern

in ZSH

Not that useful really, more novel. Can open up an awful lot of terminal windows.

Uses the PHP binary to check the syntax of all .php files in or below the current working directory. Really handy for doing that last minute check before you commit code to the repository.