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Remove prefix using awk

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# 1  
Old 06-01-2009
Remove prefix using awk
Remove prefix using awk

File:
Quote:
xyz.amp|x|a|t
xyz.tmpx|a|t
aic.klmx|a|t
jil.djn|a|t
mno.djn|j|k
dij.iuy|a|t
Code:
 nawk -F"|" '{if ($1 ~ /^xyz./) print; else { gsub(.*\..*, \..*, $1) ;print }}' file

Error:
Quote:
nawk: syntax error at source line 1
context is
{if ($1 ~ /^xyz./) print; else { >>> gsub(. <<< *\..*, \..*, $1) ;print}}

ouput required:
Quote:
xyz.amp|x|a|t
xyz.tmpx|a|t
klmx|a|t
djn|a|t
djn|j|k
iuy|a|t
# 2  
Old 06-01-2009
check the syntax of your gsub().
# 3  
Old 06-01-2009
how about below shell?

Code:
while read line;do
set $line
echo ${1#*.}
done < yourfile

Last edited by vidyadhar85; 06-01-2009 at 11:59 PM..
# 4  
Old 06-02-2009
Quote:
Originally Posted by summer_cherry
how about below shell?

Code:
while read line;do
set $line
echo ${1#*.}
done < yourfile

check your output.
# 5  
Old 06-02-2009
Code:
sed -n '/^xyz\./p;/^xyz\./!{s/^[^.|]*\.\(.*\)/\1/p}' filename

op:
HTML Code:
xyz.amp|x|a|t
xyz.tmpx|a|t
klmx|a|t
djn|a|t
djn|j|k
iuy|a|t
Or using awk:

Code:
awk -F "|" '/^xyz\./{print;next}{sub(/^[^.]*\./,"",$1);print}' OFS="|" filename

HTML Code:
xyz.amp|x|a|t
xyz.tmpx|a|t
klmx|a|t
djn|a|t
djn|j|k
iuy|a|t
-Devaraj Takhellambam
Last edited by devtakh; 06-02-2009 at 01:40 AM.. Reason: added awk solution also
# 6  
Old 06-02-2009
Or shorter:

Code:
awk '!/xyz/{sub(".*\.","")}1' file

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