Shell Programming and Scripting

Hi All ,

i am working on a backup script , which would a call a executable file in unix server ,

Login credentials ::

use telnet session to login to Unix server

when logged in, this would be my Prompt :::

unix11@raghav:

I just need to cut the word unix11 , so that i can use this to set my path to call the executable ::

Please help me on this


Thanks all for your Help !!!

Code:

echo "unix11@raghav" | awk -F"@" '{ print $1}' | read firstword
echo $firstword

Thanks!! but my server name doesnot be constant ..

we use several unix machines. is there any way to cut that part when i login

instead of giving them in echo ???

Thanks!!

well - your prompt could be set to be most anything usually using the PS1 variable - I'm guessing that unix11 is the username you connected as, in which case you could use one of:

id
$USER / $user variable
whoami

etc

to see what your prompt looks like use echo $PS1

(and to answer your question try echo unix11@raghav | sed 's/@.*//' )

Code:

 echo unix11@raghav | sed 's/@.*//'
or
 echo unix11@raghav | cut -d@ -f1
or
  echo unix11@raghav | awk -F"@" '{print $1}'

HTH

The PS1 environment variable is how the prompt is defined. Try the echo trick on that variable, or use one of the string operations on the variable - the ones in shell.

What shell?

Code:

echo $SHELL

will tell you your shell.

Thanks for your reply

thats not my id , its my server name .. and if i cannot cut those server name is there a possibility to create in link from the source directory to target .

so that when i run the shell script it calls this executable and performs the functions ..

i have only two servers one is unix11 and unix 12 .. in these i have the executables in bin directory . If i create a link in my local directory will that work ???

also let me know how to create a link for a file so that it would be very helpful !!!

Thanks again for your help !!!!

i tried to call the executable by creating a link

ln -s

but it didnot work can anyone let me know how this can be performed!!