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I'm stuck with a simple script. I want to run tracepath on multiple address and to find if some IP is contained in the output of the tracepath. For now I have the following:

if tracepath -n | grep x.x.x.x 
echo bal bal 
echo ova ova ova

But this doesn't work.

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what are you trying to grep for? your regexp says 'x' then any character then 'x' … – richard Aug 30 '14 at 14:44

2 Answers 2

up vote 2 down vote accepted

Try this syntax and I think you don't want the output of grep, so we use the -q (quiet) switch:

(traceroute -n | grep -q x.x.x.x) && echo "Yes" || echo "Nope"

Or with the if statement:

if (traceroute -n | grep -q x.x.x.x)
  echo "Yes"
 echo "Nope"
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Yup it work perfect ! Im trying now to put the echo in newline, i have the following ... echo "This $i is OK" and $i is the ip address so when i use "\n" it does not work and when i use '' instead of "" the $i is showing instead of the actual ip addrees ( or value ) – user3523605 Aug 30 '14 at 15:28
Found solution about this too ... echo -e "This $i is OK \n" :) – user3523605 Aug 30 '14 at 15:36
The parentheses are superfluous. @user3523605 – Gilles Aug 30 '14 at 23:04

You have wrong syntax, after if condition there should be then, not do:

tracepath -n | grep x.x.x.x
if [ $? -eq 0 ]
echo "bal bal" 
echo "ova ova ova"
share|improve this answer
-1 as rude your code is equivalent. – richard Aug 30 '14 at 14:44
This code is exactly equivalent to the code in the question. – Gilles Aug 30 '14 at 23:05
@Gilles Oh is it???? I've tried it out for real. Code in the question doesnt work, but mine works. What is this do doing in the if-else statement??? – Colonial Dunky Aug 31 '14 at 18:11
Oh, sorry. Yes, do should be then. Your answer would be useful if it pointed that out instead of insulting the asker. – Gilles Aug 31 '14 at 19:26

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