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"People only see what they want
in who they want to see it..."






"... the people meant to be in your life will recognize it effortlessly."




Long time no post! I could say sorry and sorry again but you and I have to face the truth: I just dont have the time to post regularly on this blog. If you want to follow me and my work, then make sure you follow @jessicachrist on Instagram, where I post more often that here. Anyway, I dont want to do that much jabbering, just enjoy the pictures of the beautiful wood watch from Jord! It is delivered in a pretty wooden box, hand finished and the dial is decorated with Swarovski crystal markers. 





 

Available link for download

Bash Script to check after every one minute whether a user has logged in or not

#!/bin/bash
# isuserloggedin.sh
# Usage: isuserloggedin.sh username
# Shell script which checks after every one minute whether a user has logged in
# or not
# You can also run script in background using & then foreground it to view result

if [ $# -ne 1 ]
then
 echo "You supplied wrong arguments"
 echo "usage : `basename $0` username"
exit 1
fi

isuserexist()
{
grep -w "$1" /etc/passwd > /dev/null

if [ $? -eq 1 ]
then
 echo "$1 is not a valid user"
exit 1
fi
}

isuserexist $1
time=0
while true
do
# you can replace following two statements with
# if `who|grep $1 > /dev/null`
who|grep $1 > /dev/null
if [ $? -eq 0 ]
then
 echo "User $1 is logged in "
 if [ $time -gt 60 ]
 then
 hours=$((time/60))
 minutes=$((time%60))
 echo "He is logged in $hours hour(s) $minutes minute(s) late"
 else
 echo "He is logged in $time minute(s) late"
 fi
exit 0

else
let time++

# You can use following formats also
# time=`expr $time + 1 `
# time=$((time+1))

sleep 60
fi
done

Output:
[root@localhost shell]# sh isuserloggedin.sh
you have suplied wrong arguments
usage : isuserloggedin.sh username
[root@localhost shell]# sh isuserloggedin.sh root
User root is logged in
He is logged in 0 minute(s) late
[root@localhost shell]# sh isuserloggedin.sh roott
roott is not a valid user
Run script in background
[root@localhost shell]# sh isuserloggedin.sh venu &
[1] 15917
[root@localhost shell]# User venu is logged in
He is logged in 3 minute(s) late

[1]+ Done sh isuserloggedin.sh venu
Run script in background then foreground it
[root@localhost shell]# sh isuserloggedin.sh venu &
[1] 16223
[root@localhost shell]# fg
sh isuserloggedin.sh venu
User venu is logged in
He is logged in 1 minute(s) late
[root@localhost shell]#

Available link for download