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Old 11-21-2007
sachin.tendulka sachin.tendulka is offline
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Join Date: Nov 2007
Posts: 32
passing a list of dynamic names to a "PS" command in shell script?

Hi,

I am new to shell script. This is my first post .I have written a small script which returns list of names starts with "ram" in /etc/passwd .Here is that:-

#!/bin/ksh

NAME_LIST="name_list.txt"
cat /dev/null > $NAME_LIST

evalcmd="cat /etc/passwd | grep "^ram?*" | cut -d: -f1"
eval $evalcmd > $NAME_LIST 2>&1

echo $?

if [[ $? -ne 0 ]] then
echo "Failed to create list of names";
else
echo "List of names are created successfully";
fi

The thing is that i need to pass these dynamic names from /etc/passwd to a "ps" command like:-

ps -o user,fname -U ram,ramdev1,ramdev2,ramdev3

Since i cannot hardcode the names like ram,ramdev1,ramdev2,etc i need to pass these names in a single
command. something like:-


cat /etc/passwd | grep "^ram?*" | cut -d: -f1| ps --o user,fname -U <dynamic variable which fetches the whole name in /etc/passwd>

Since i am pretty much new to shellscript.Please do help me on this. This is really urgent to be delivered. Hence pls. do the needful.

Thanx,
Sachin