Right click Format Media | USB | SDC | HDD and more

Use this to format any media , including your HDD , pen drives , usb portables , memory cards and so on.Please note : Be careful while selecting the /dev/sd* in the list menu.
Tired this as there was a need to right click format on Ubuntu : Download here

 

FAST a command line database in Bash

   Inspired by Scott’s FAST database implemented as a batch file and hasan.diwan@gmail.com bash script , i tired a bit more on it , it’s as below :

#!/bin/bash


fad()
{
echo “$1″ >> ~/.db
echo “Updated at $@”
}


f()
{
grep “$1″ ~/.db
}


fuse()
{
echo “f keyword to search”
echo “f -add or f -a to add “
}


case “$1″ in


-a |-add |–add) fad “$2″
;;

“”) f “$*”
;;

*) fuse
;;


esac

For the input either use bash’s tab completion, which will automatically put in backslashes as appropriate, or the user should quote it.

Sample :

To add
$ f -a “hemanth.hm nerd +919449167054″
$


To search
$ f “nerd”
$ hemanth.hm nerd +919449167054

My sensiour thanks to  \amethyst and greycat , for teaching me best partices


To run the script as a command , place the script in /bin.



More graphical approach

                                                                                              

#! /bin/bash

fad()                        

{

echo “$1″ >> ~/.db

notify-send “Database Updated $@”

}

f()

{

res=$(grep “$1″ ~/.db)

echo “$res”

notify-send “$res”

echo “$res” | zenity –text-info

}

fuse()

{

echo “f keyword to search”

echo “f -add or f -a to add “

}

case “$1″ in

-a |-add |–add) fad “$2″

;;

“”) f “$*”

;;

*) fuse

;;

esac

 

Twiiter for terminal

Just  wonder  why not you tweet while coding from terminal , so tired this :

#! /bin/sh

user=”twitter-username”

password=”twitter-password”

echo “You want to tweet about ?”

read message 

curl -u  $user:$password -d “status=$message” “https://twitter.com/statuses/update.xml”

Rather disadvantage if your friend could read your script right

So tired this :

__________________________________________________________________________________

#! /bin/bash
tweet()
{
usr=$(zenity –entry –text=”Username” –title=”Twitt”)
pwd=$(zenity –entry –text=”Password” –title=”Twitt” –hide-text)
msg=$(zenity –entry –text=”Tweet” –title=”Twitt”)

if [ "$usr" = "" ]; then
zenity –info –text=”UserName invalid”
tweet
elif [ "$pwd" = "" ]; then
zenity –info –text=”Invalid Password”
tweet
elif [ "$msg" = "" ]; then
msg=”www.h3manth.com”
fi
}

tweet
URL=”https://twitter.com/statuses/update.xml”
curl -u ${usr}:${pwd} -d status=”${msg}” ${URL} -k -s > /dev/null

if [[ $? = 0 ]];
then
zenity –error –text=”You couldn’t twitt , check if everything is fine ” –title=”Twitt”
exit 0
else
zenity –info –text=”$msg is twitted” –title=”Twitt”
exit 1
fi

__________________________________________________________________________________

Join hands :  twitty

 

Simple Script

I had not written , something colorful like this from a long time , have tried to tie up all the basics in a single code.
Say i name it as fun.sh , and execute it , lets see what happens :O)

#!/bin/bash

# Variable(s)
user=”";

# Function,can be defined without the function keyword !!
# Simple function to “read” user input

read_info()
{
echo “What is your name ? “
# read data from keyboard to user variable
read user
# Say hi to the user
echo “Hi $user”
}
ask()
{
echo “Which OS do you like ?”
echo “1) Linux”
echo “2) Windows”
echo “3) MAC”
echo “4) None”
echo “5) You wont tell me”

read case;

case $case in
1) echo “The best , Happy Hacking “;;
2) echo “Who needs Gates and Windows , when you have freedom “;;
3) echo “You need an Apple?”;;
4) echo“None!!!, What are you using now then!”;;
5) exit
esac

}

# Note the spaces in after if condition and within [ ] , if you are using
# if [ $# -eq 0 ] or better go for if test $# -eq 0
# $# gives number fo command line args

if test $# -eq 0
then
echo “Number of command line arguments is $# !!”
else
# loop till the end of arguments and echo themall using “for” loop

echo “There are $# number of agrs they are {using for loop} : “
for arg in $*
do
echo $arg
done

# We can also do this:
# for args in “$@”
# do
# echo ${args}
# done

#
# loop till the end of arguments and echo themall using “while” loop

echo “There are $# number of agrs they are {using while loop} : “
while [ -n "$1" ]
do
echo $1
shift
# Yes,shift can be used to parse through the command line array
done

fi

read_info
ask

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
$ ./fun 1 2 3

Output :

There are 3 number of agrs they are {using for loop} :
1
2
3
There are 3 number of agrs they are {using while loop} :
1
2
3
Waht is your name ?
hemanth
Hi hemanth
Which OS do you like ?
1) Linux
2) Windows
3) MAC
4) None
5) You wont tell me
1
The best , Happy Hacking

 

Simple Script

I had not written , something colorful like this from a long time , have tried to tie up all the basics in a single code.
Say i name it as fun.sh , and execute it , lets see what happens :O)

#!/bin/bash

# Variable(s)
user=”";

# Function,can be defined without the function keyword !!
# Simple function to “read” user input

read_info()
{
echo “What is your name ? “
# read data from keyboard to user variable
read user
# Say hi to the user
echo “Hi $user”
}
ask()
{
echo “Which OS do you like ?”
echo “1) Linux”
echo “2) Windows”
echo “3) MAC”
echo “4) None”
echo “5) You wont tell me”

read case;

case $case in
1) echo “The best , Happy Hacking “;;
2) echo “Who needs Gates and Windows , when you have freedom “;;
3) echo “You need an Apple?”;;
4) echo“None!!!, What are you using now then!”;;
5) exit
esac

}

# Note the spaces in after if condition and within [ ] , if you are using
# if [ $# -eq 0 ] or better go for if test $# -eq 0
# $# gives number fo command line args

if test $# -eq 0
then
echo “Number of command line arguments is $# !!”
else
# loop till the end of arguments and echo themall using “for” loop

echo “There are $# number of agrs they are {using for loop} : “
for arg in $*
do
echo $arg
done

# We can also do this:
# for args in “$@”
# do
# echo ${args}
# done

#
# loop till the end of arguments and echo themall using “while” loop

echo “There are $# number of agrs they are {using while loop} : “
while [ -n "$1" ]
do
echo $1
shift
# Yes,shift can be used to parse through the command line array
done

fi

read_info
ask

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
$ ./fun 1 2 3

Output :

There are 3 number of agrs they are {using for loop} :
1
2
3
There are 3 number of agrs they are {using while loop} :
1
2
3
Waht is your name ?
hemanth
Hi hemanth
Which OS do you like ?
1) Linux
2) Windows
3) MAC
4) None
5) You wont tell me
1
The best , Happy Hacking

 

Functions in Shell Scripts

Functions are easy to define in scripting :

function function_name
{

}

function –> keyword .
function_name—> valid identifier .

Example :

##variables
today=$(date +”%x %r “)

##functions

function todayIS
{

echo $today

}

Output will be : Monday 26 January 2009 10:04:59 PM IST {something like this}

It is simple easy and yet very powerful to use functions(methods) in your code .
Be careful in selecting the function and variable names , note that it wont conflict with the reserved keywords of the shell like PATH,HOME etc

 

Functions in Shell Scripts

Functions are easy to define in scripting :

function function_name
{

}

function –> keyword .
function_name—> valid identifier .

Example :

##variables
today=$(date +”%x %r “)

##functions

function todayIS
{

echo $today

}

Output will be : Monday 26 January 2009 10:04:59 PM IST {something like this}

It is simple easy and yet very powerful to use functions(methods) in your code .
Be careful in selecting the function and variable names , note that it wont conflict with the reserved keywords of the shell like PATH,HOME etc

 

How to shell script?? Where to script??

The best way is to get any flavor of UNIX .
You can just do it in terminal or go for more attractive GUI like : geany

Alternatives for other OS :

1.cigwin : cygwin
2.mks : mks
3.winbash : winbash

Online best alternative : junix

Now , the simplest way to write a script in terminal :

$ cat > script_name
> type here
>
>
press Ctrl+D

then ,

$ chmod 777 script_name

$ ./script_name

Other methods will be disclosed in the next coming posts

 

Looping the Loops

Loopy loops :

while loop

Syntax :

while conditiondo........done

until loop 
until falsedo .......done

for loop
for variable in listdo.......done

for (( expr1 ; expr2 ; expr3 )) ; do commands ; done

 

This or That ??

As we get different routes in the journey of life , we get different paths in the flow of our code , which to select depends on our logic , it may be right or wrong , but it depends on our conditions !!

if condition

if this is true then i would do that

Syntax 0:

 if condition       then       ...       ...    else         ...fi Syntax 1:
           if condition                then                ....                elif another_condition                    then                          ....                else                         ....            fi 

        

test command or [ expr ]

Am i a hero ?

If test returns zero then I am a hero , or else any non-zero value from the test clearly says I am not a hero.

Syntax:

test expression OR [ expression ]

Can be used on : Integer ,File types and Character strings .

Conditions :

eq	equal to
ne	not equal
gt	greater than
lt	lesser than
ge	greater than or equal
le	lesser than or equal

For strings we can use == and != , for equals and not equal to conditions.

For file we can use -[ s,f,d,w,r,x,] file , can be used to check ,non empty ,file,directory, wrx permissions respectivly.

Local operations like !,-a,-o i.e NOT,AND,OR can be used with expressions .

Case statement

Case in expression then go to the referred case number or the pattern

Syntax:

case expression in
pattern1) execute commands ;;
pattern2) execute commands ;;
...
esac

P.S : “;;” and ‘)’