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Top Forums Shell Programming and Scripting sed/awk : how to delete lines based on IP pattern ? Post 302565294 by albator1932 on Tuesday 18th of October 2011 04:46:18 AM
Old 10-18-2011
Thanks to you two

I will try this tomorrow and I'll let you know if I've succeded doing what I want Smilie

---------- Post updated 18-10-11 at 10:46 AM ---------- Previous update was 17-10-11 at 06:56 PM ----------

Hello again

Here is what I've done :

Code:
for HOST in $(cat stations.lst | uniq)
do
  # echo -n "$HOST"
  if ping -c 1 $HOST > /dev/null 2>&1
  then
    HOSTNAME_val=`rsh  $HOST "cp /etc/hosts /etc/hosts.dirty ; sed '/152\.15\./d;/152\.9\./d;/152\.19\./d;/44\.33\./d' /etc/hosts > /etc/hosts.clean ; mv /etc/hosts.clean /etc/hosts"`
    val1=`echo $HOSTNAME_val` 
    echo $val1
  else 
    echo "$HOST ; not responding"
  fi
done

The reason why I did not use the -i option is because many of the workstations are HP-UX and sed does not recognize de -i option on this system...

It's working great, thanks !
 

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GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for lines containing a given pattern SYNOPSIS
grep [-elnsv] pattern [file] ... OPTIONS
-e -e pattern is the same as pattern -c Print a count of lines matched -i Ignore case -l Print file names, no lines -n Print line numbers -s Status only, no printed output -v Select lines that do not match EXAMPLES
grep mouse file # Find lines in file containing mouse grep [0-9] file # Print lines containing a digit DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1 occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is returned. SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9). GREP(1)
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