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Write a unix shell program to accept a user name and check whether the user logged in or not?
Wiki User
∙ 14y ago
#!/bin/sh
echo "Please enter the name of a user:"
read USER
who|grep $USER > /tmp/usertest &
sleep 5
if [ -s /tmp/usertest ]
then echo "User is logged in"
else echo "User is not logged in"
fi
rm /tmp/usertest
Wiki User
∙ 14y ago
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