Replace everyting after every time different string

Question

Want to change everything after security.server.ip=* with the result ip from the second grep.

First Grep:

cat admin.conf|grep security.server.ip|grep -v ^#

Result:

security.server.ip=10.10.1.2

Second Grep:

cat /etc/hosts|grep -i admin-server|head -1|awk '{ print $1}

Result:

10.10.1.2

Sometimes security.server.ip will be different on admin.conf and I'm wondering how to replace it with one command which will catch IP address form second grep and replace it in the first one.

possible duplicate of [sed: Replace part of a line](http://stackoverflow.com/questions/1074450/sed-replace-part-of-a-line). Just store the values in a variable and then use answers in that question. — fedorqui, Aug 05 '14 at 13:34
Just use awk for all of it, the cat at the start is also completely pointless as the commands take files as arguments — , Aug 05 '14 at 13:58
I'm not able to figure it out how to do it, even the below examples not work! — Kalin Borisov, Aug 05 '14 at 14:00
Write your question more coherently and you will get better answers, give expected output and try to explain what you actually want better as it is not very clear. — , Aug 05 '14 at 14:02

konsolebox · Accepted Answer · 2014-08-05T14:09:52.220

1

You can use a script:

#!/bin/sh
IP=$(exec grep -i admin-server /etc/hosts | awk '{ print $1; exit }')
sed -i "/^security\.server\.ip=/s|=.*|=$IP|" admin.conf

edited Aug 05 '14 at 14:09

answered Aug 05 '14 at 13:33

konsolebox

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Is it possible that IP variable to be included in sed, is there option which permit execute of bash commands? – Kalin Borisov Aug 05 '14 at 13:37
What do you mean the IP variable to be included in sed? Isn't my script doing that already? – konsolebox Aug 05 '14 at 14:02
That script is not working as expected I get some error: sed: -e expression #1, char 45: unterminated `s' command – Kalin Borisov Aug 05 '14 at 14:08
@KalinBorisov Sorry. I now added the terminating delimiter. – konsolebox Aug 05 '14 at 14:10

score 1 · Answer 2 · answered Aug 05 '14 at 13:35

1

You could save it in a variable:

NEWIP=`grep -i admin-server /etc/hosts|head -1|awk '{ print $1}'` \
sed -i "s/^security\.server\.ip=[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/security\.server\.ip=$NEWIP/" admin.conf

answered Aug 05 '14 at 13:35

martin

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score 0 · Answer 3 · answered Aug 05 '14 at 14:47

0

With GNU awk for inplace editing, nextfile, and gensub():

gawk -i inplace '
    NR==FNR{ if (tolower($0) ~ /admin-server/) { ip=$1; nextfile } next }
    { $0=gensub(/(security\.server\.ip=).*/,"\\1"ip,""); print }
' /etc/hosts admin.conf

answered Aug 05 '14 at 14:47

Ed Morton

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Replace everyting after every time different string

3 Answers3