Using grep with 'who' to find online users

Shell Programming and Scripting
1

solved

2 
who | grep -w ^$user >/dev/null 2>&1
if [ $? -eq 0 ]
then
  echo "$user is online"
else
  echo "$user not online"
fi

if your grep supports -q option, use it like this who | grep -qw "^$user"

--ahamed

1 Like
3

even more streamlined.

if who|grep -qw ^$user >/dev/null 2>&1
then
  echo "$user is online"
else
  echo "$user not online"
fi

or the one line version.

who|grep -qw ^$user && echo "$user online" || echo "$user not online"
1 Like
5

gah I should have known to pipe grep I completely forgot

still learning. . .

thanks guys:)