Hi, I am new to linux. Don't hesitate if I ask a silly queston.

[saidulu.alli]

When you assign a value $1 to some variable, what actually it assigns.

for example Build_dir = $1;

what is the value of Build_dir ?

[Dias de verano]

what is the value of Build_dir ?

Did you mean in a script? If so, then $1 is whatever is the first argument on the command line. If myscript.sh contained this line:

Build_dir = $1;

... and you called it like this...

sh myscript.sh /home/myfolder

... then Build_dir would have the value /home/myfolder.

     $$ = The PID number of the process executing the shell.
     $? = Exit status variable.
     $0 = The name of the command you used to call a program.
     $1 = The first argument on the command line.
     $2 = The second argument on the command line.
     $n = The nth argument on the command line.
     $* = All the arguments on the command line.
     $# The number of command line arguments

[surekha]

hey in scripting the first argument through commandline is considered as $1 if u fail to give arguments .
you should display an error message and ask for entering arguments


$1 is th argument which u enter after the filename in commandline

[pcgeek]

thanks that helps. I wanna learn more linux stuff grrrrrrrrr