Substring

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1

Hi,

My requirement is to get the substring and then remove special character.

Ex 
I have data like T_SYSTEM_XXXXX_YYYY_ZZZ
I want to get XXXXXYYYYZZZ

the part after T_SYSTEM is varying it might be XXX_YY or just XX

can you tell me which all commands i have to use.

i understand i have to use AWK here but m still confused.

2 
 echo 'T_SYSTEM_XXXXX_YYYY_ZZZ' | sed 's/T_SYSTEM_//'
3

Hello,

Following may also help.

echo "T_SYSTEM_XXXXX_YYYY_ZZZ" | awk -F"\_" '{print $3 $4 $5}'

Output wil lbe as follows.

XXXXXYYYYZZZ

Thanks,
R. Singh

4

thanks it worked.

just one more thing it shows a warning when we execute this statement, is there any way to not display the warning.

5

... another option ...

| cut -c10- | tr -d _
6

With a 1993 or later version of the Korn shell or with bash, you could use:

#!/bin/ksh
var="T_SYSTEM_XXXXX_YYYY_ZZZ"
new=${var#T_SYSTEM}
new=${new//_/}
printf "convert %s -> %s\n" "$var" "$new"

which produces:

convert T_SYSTEM_XXXXX_YYYY_ZZZ -> XXXXXYYYYZZZ