Easy Script, just to find the given username if is it online or not


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Easy Script, just to find the given username if is it online or not
# 1  
Old 10-13-2009
Easy Script, just to find the given username if is it online or not

hey guys plz help me..with shell script.

i must find the given(the user types a username) username if is it login or not..

i know how to do it logically, but i think that i can't in scripting.

Thank you all
# 2  
Old 10-13-2009
A simple thing could be, in bash.
Code:
$ cat chk-loggedin.sh
echo -n "Enter the username: "
read a
w | grep $a >> /dev/null
if [ $? -eq 0 ]; then
    echo "User $a is logged in..";
else
    echo "User $a is not logged in.";
fi

# 3  
Old 10-14-2009
i think that one will help me alot...i will post you tomorrow if everything was ok...because i dont have unix system right now.

thank you a lot!

---------- Post updated 10-14-09 at 09:59 AM ---------- Previous update was 10-13-09 at 06:42 PM ----------

everything is ok, but i get an error in line 1 about the $ it says that $: not found, any ideas?
# 4  
Old 10-14-2009
this is not part of the script... "cat file" just shows what is inside the file.
# 5  
Old 10-14-2009
ok so i need to delete the line 1?
i did it and everything is ok..is that correct?

Thank you all
# 6  
Old 10-14-2009
Ya, you are right.

Exclude the first line, and have all the remaining lines in the script. Execute the script, which would ask you a user name and finds out whether that persons is logged in or not.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Using grep with 'who' to find online users

solved (3 Replies)
Discussion started by: subway69
3 Replies

2. IP Networking

iptables - most easy way to find rule and remove it?

I have situation where I have rules in iptables with comments. Now... I can for example enter rule like "iptables -A FORWARD -s xxx -j ACCEPT" and delete it with "iptables -D FORWARD -s xxx -j ACCEPT".. but if that rule contain some random comment (-m comment) then ... ? I can find with scripting... (2 Replies)
Discussion started by: darkman_hr
2 Replies

3. UNIX and Linux Applications

grep file to find unique instances of username

hello - A SystemOut.log file has recurring entries that follow this format: Principal: auth9.nick.al.gov:389/USERNAME Over the course of a day thousands of lines similar to this are produced, with each username represented hundreds of times. I need to create a new file that shows... (4 Replies)
Discussion started by: 1075FJ40
4 Replies

4. UNIX for Advanced & Expert Users

how to find any device online/offline

what is the command for checking which device active and which is not active (1 Reply)
Discussion started by: RahulJoshi
1 Replies

5. Shell Programming and Scripting

To find the username in /etc/passwd file

Hi, I need to a shell script to list out only the username in the /etc/passwd file. Regards Siva (7 Replies)
Discussion started by: gsiva
7 Replies

6. Shell Programming and Scripting

Find username of user running the script

Hello All, If I have a simple cgi script and want to find the name of the person accessing the page, is it possible? How do I get the name of this user? Please help. I was trying a vague method but it doesn't seem to work with all browsers and versions ... $val=$ENV{'HTTP_COOKIE'}; $name... (1 Reply)
Discussion started by: garric
1 Replies

7. UNIX for Dummies Questions & Answers

Need help on installing an EASY to use and easy to install command line text editor

Hi again. Sorry if it seems like I'm spamming the boards a bit, but I figured I might as well ask all the questions I need answers to at once, and hopefully at least get some. I have installed Solaris 10 on a server. The default text editors are there (vi, ex, ed, maybe others, I know emacs is... (4 Replies)
Discussion started by: EugeneG
4 Replies

8. UNIX for Dummies Questions & Answers

Find, make and move file based on username

hi there, i'm new to UNIX( just 3month used), i found my new box contained alot of files and directories in /home/box/ i've tried to search script in tis forum and found many of them but, i don't know how to combine them to make a script, although using pipes. my tasks are: 1) to scan user... (5 Replies)
Discussion started by: Helmi
5 Replies

9. UNIX for Dummies Questions & Answers

How to find who fingered my username

Hi Everyone, Whenever someone uses the finger command against my username, he.she gets my info. Is there a way to find who ran the command against my username, somewhat like a log file for the finger command. I would be greatful if someone to clear my query. Regards Anirudh Koul... (3 Replies)
Discussion started by: anirudhkoul
3 Replies
Login or Register to Ask a Question