Help with simple program. (beginner) Post: 302513956

Sponsored Content

Top Forums Shell Programming and Scripting Help with simple program. (beginner) Post 302513956 by sexyladywall on Thursday 14th of April 2011 11:45:06 AM

04-14-2011

Registered User

Help with simple program. (beginner)

Hey all,

Writing a program that searches for a username and if they are online creates a 'beep' and sends the username and date to a log file.

the error i am getting is:

Code:

paul.obrien16@aisling:~/os$ bash checklogin
: command not found
Enter username
paul.obrien16
': not a valid identifier `username
checklogin: line 36: syntax error: unexpected end of file
paul.obrien16@aisling:~/os$

Here is my code for refrence:

Code:

#!/bin/bash

# get username
echo "Enter username"
read username
#finds the user in the list of people currently logged in
if [ $ cat /etc/passwd | cut -d: -f1= "$username" ]
then
# loop while user is logged in
while [ $(who | grep $username) != 0 ]
do
sleep 60
done

echo "$username logged in"
#generate beep
echo -e \a
#output to a log file calles date.txt
echo "user is $(username) Today's date is $(date)" > /tmp/date.txt
#exit function
exit 1
else
#display message
echo "$username aint logged in!"
#output to a log file called date.txt
echo "user is $(username) Today's date is $(date)" > /tmp/date.txt
#exit the function
exit 1
#end the script
fi

exit 0

Last edited by sexyladywall; 04-14-2011 at 12:46 PM.. Reason: mistake in code

sexyladywall

View Public Profile for sexyladywall

Find all posts by sexyladywall

10 More Discussions You Might Find Interesting

1. Programming

QUESTION...simple program?

I am new to the unix/linux environment. AND........ I need to create a mini shell..that displays prompt (i.e., READY:$), accepts a command from std-in, and prints the command and any parameters passed to it. HELP!!!!

2. Programming

a simple chat program

any suggestions on how i could create a simple chat program between two terminals using pipes? thanks

3. UNIX for Dummies Questions & Answers

A beginner for cygwin simple question

the current pwd is: c:\cygwin\home\hui which command can go to c:\documents and setting\hui\my documents\hui\reply.txt

4. Programming

Xlib simple program.

I don't know if it is right to ask you this. Can someone help me write a simple Xlib program,with button on it,and all that button do is switch 2 messages. I have tried and tried,but never get past Hello World. Can someone help me please? ---------- Post updated at 10:17 PM ---------- Previous...

5. Shell Programming and Scripting

simple program help required

The circumfrence of a circle is #!/usr/bin/perl print 2 * 3.141592654 * 12.50 \n"; # pi= 3.141592654 # r= 12.50 I need a simple program showing me all the steps..to modify the above to prompt for and accept a radius from the person running the...

6. UNIX for Dummies Questions & Answers

Installing a Program called MAQ (Beginner Here)

Basically, I'm trying to install this program called MAQ. Maq User's Manual I've downloaded it and I tried to type in $ ./configure; make; make install but the ouput I got was this: bash: ./configure: No such file or directory make: Entering directory `/home/vlay/bwa-0.5.0' make:...

7. Shell Programming and Scripting

very simple but mount everest for beginner

List directories at the home directory in increasing order. First of all is this correct? cd ~/ du -h|sort -n|more First command is to go to the home directory and second does the rest. Is there a way to do them in single command. Thanks in advance.

8. UNIX for Dummies Questions & Answers

Help with creating a simple program!!

i am new to shell scripting!! i am making this program in bourne shell, that asks the user to input "Hello (their name)" or "question (their name)", any other input, "ERROR" will be outputted. if they input "Hello (name)", i want to out saying Hello (name) but if they input "question (name)", i...

9. Programming

A simple C program query ...

Given the following code inside the function ext3_write_super(): (It's there in Linux kernel 2.6.27.59) static void ext3_write_super (struct super_block * sb) { if (mutex_trylock(&sb->s_lock) != 0) BUG(); sb->s_dirt = 0; } The conditional test at if...

10. Shell Programming and Scripting

Help/How-to - simple UNIX script / gzip (beginner)

Hey all, I would like to ask your help and sorry in advance for my ignorance since I am a complete beginner in this. I need to create a UNIX script that will: - scan a small number of folders and subfolders (see a similar file tree in the attachment) - - for each final folder (each of...

LEARN ABOUT ULTRIX

shexp

shexp(1) General Commands Manual shexp(1)

Name
shexp - display password expiration information for a user

Syntax
shexp [-q] [username]

Description
The command is used to display a user's password expiration information. The specified username, or logname if no username is supplied, is
converted to a UID by searching through the passwd file. The UID is then used to look up the user's entry in the Auth Data Base. The
password expiration information is then printed out in format.
% shexp
Expires Tue Dec 6 10:49:18 EST 1988
If the password has already expired the word Expires will be replaced with the word Expired. If password expiration is disabled for the
particular user in question the output of will be Never expires.

Options
-q Instead of displaying the expiration date and time in format, outputs it as three decimal numbers: the minimum password lifetime, the
maximum password lifetime, and the password modification time. All three numbers are displayed as they are found in the database.

Restrictions
Only the super-user may obtain information about users with UIDs other than the real UID of the invoking process.

Diagnostics
User not found in passwd data base.
There is no entry in for the specified username.

Cannot stat auth file.
The database is missing (security features may not be enabled).

Insufficient privilege.
An insufficiently privileged user is asking for information about a username with a UID different then their current real-UID.

An exit value of 0 indicates a successful operation, any other exit status indicates an error.

Files
See Also
passwd(1), getauthuid(3), auth(5)
Security Guide for Users

shexp(1)

10 More Discussions You Might Find Interesting

1. Programming

QUESTION...simple program?

Discussion started by: jj1814

2. Programming

a simple chat program

Discussion started by: kelogs1347

3. UNIX for Dummies Questions & Answers

A beginner for cygwin simple question

Discussion started by: zhshqzyc

4. Programming

Xlib simple program.

Discussion started by: megane16v