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How to trim variable in linux?

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# 1  
Old 06-23-2010
How to trim variable in linux?
Hi guys ,
I m developing a script in linux.but getting confused about how would i trim my variable if there is any space.

for example.
I m storing value in a variable named MACHINE_NAME
if MACHINE_NAME=<space><space><space>ABCDF<space><space>
How would i trim it to have my MACHINE_NAME=ABCDF (with no spaces in left or right side.
# 2  
Old 06-23-2010
Code:
MACHINE_NAME=$( echo $MACHINE_NAME )

The shell automatically removes seemingly excessive whitespaces, which is why you have to double quote variables if you want to preserve them.
This User Gave Thanks to pludi For This Post:
pinga123
# 3  
Old 06-23-2010
Code:
# echo "$MACHINE_NAME"|sed 's/ //g'

Code:
# echo $(echo "$MACHINE_NAME")

# 4  
Old 06-23-2010
I got is solved there was some mistake in spelling. Sorry pludi for inconvenience.
Last edited by pinga123; 06-23-2010 at 03:20 AM..
# 5  
Old 06-23-2010
Hi
Code:
VM_GUEST=$( echo $VM_GUEST )

The underscore for missing between VM and GUEST in the echo statement.

Guru.
This User Gave Thanks to guruprasadpr For This Post:
pinga123
# 6  
Old 06-23-2010
Code:
VM_GUEST=$( echo $VM_GUEST )

You're missing an underscore here
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