LinuxQuestions.org - Revised: how to filter the host which is being used by others

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Revised: how to filter the host which is being used by others

I would like to check whether others are log in the host or not. I have following tcsh script . **I would like to filter the host which is used by other users.** **I am using tcsh**.

Code:

 host_list="/home/campus27/zwang10/bin/hostlist"

    HOSTS=`cat $host_list`

    cp /dev/null hostlist_available

    for line in $HOSTS

    do 

    ssh -o ConnectTimeout=1s $line true &>/dev/null

    RESULT=$?

    if [ $RESULT -eq 0 ]

    then

    echo $line

    echo $line >> hostlist_available

    fi

    done

The above script will write all available hostname into

Code:

hostlist_available

.

But some other people are log in the available hosts. I would like to delete those hosts (except me). My username is

Code:

zwang10

If I am reading your post correctly, then try changing this:

Code:

HOSTS=`cat $host_list`

to this:

Code:

HOSTS=`grep zwang10 $host_list`

If this is not what you are asking, please rephrase your question.