topic Re: sed? in Operating System - HP-UX

sed?

ericfjchen — Tue, 09 Aug 2005 07:30:46 GMT

May you use sed to achieve the same as below,
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awk -F: '{if(substr($1,4,1)=="k") print $1 }' /etc/passwd
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Re: sed?

harry d brown jr — Tue, 09 Aug 2005 07:44:41 GMT

Using sed is probably possible, but this works also:

cut -d":" -f1 /etc/passwd |grep "^...k"

live free or die
harry d brown jr

Re: sed?

harry d brown jr — Tue, 09 Aug 2005 08:12:01 GMT

Here is the "sed only" solution:

sed -n -e 's/^$[^:]*$:.*/\1/' -e 's/$^[A-Za-z0-9_]\{3,3\}k.*$.*/\1/p' /etc/passwd

live free or die
harry d brown jr

Re: sed?

Matti_Kurkela — Tue, 09 Aug 2005 08:19:31 GMT

A shorter sed solution:
sed -n -e 's/^$[^:]\{3,3\}k[^:]*$:.*$/\1/p'
However, I prefer something like Harry's cut-and-grep solution in cases like this.