help with Sed Command

racbern · #1 (**permalink**) 06-04-2008

Hi All,

I am trying to create a script using sed to search for a . and _ on a variable, and if it finds match, remove any value after a . or _.

For Example :

H.3 --> New Value should be H
R2K_CL --> New value should be R2K

Here's the command that I used:
# echo $var | sed 's/[._].*$//'

But my problem is when the variable has several . or _
It should only remove the value after the last . or _.

For Example:
C4.1.2 --> New Value should be C4.1

How will I update my sed command to just remove the value after the last occurrence of a . or _?

Thanks,
racbern

vgersh99 · #2 (**permalink**) 06-04-2008

Code:

echo 'C4_1_2.4' | sed 's/\(.*\)[._].*/\1/'

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