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Full Discussion: Unix Shell basic loop massive n00b
Top Forums Shell Programming and Scripting Unix Shell basic loop massive n00b Post 302552089 by thurft on Thursday 1st of September 2011 03:15:56 PM
Old 09-01-2011
Error Unix Shell basic loop massive n00b
hey guys
I would really appreciate some help, i need to do a project for a job that requires minimal UNIX scripting and im REALLY stuck

basically Im stuck at what i believe is something really simple but i just dont have a clue how to do it efficiently and properly and i REALLY appreciate some help

Basically i have a loop at which someone has to enter a string of 3 numbers.

-I want the code to check that the string is numbers only
-check that the numbers have not been already signed to someone else in the users.db file
-restrict the number of numbers to only 3.

- each time the user inputs the number wrong i want it to be allowed to correct and tell why he has to re enter it.

This is the best i could came up with but IM REALLY suck and im at a short UNIX course (1 week) for a job....

Can anyone please tell how do i make the loop properly??

this is the best i could came up with... and i KNOW is crap... but i just dont know best........ I would really appreciate some guidance plz

Code:
#!/bin/bash
echo -e  "Create a new record\n"

fSID (){
read -p "Please enter staff ID: " cSID
}

fSID

gcSID=$(grep $cSID users.db | cut -d ":" -f1 | tr [":"] [" "])
wcSID=$(echo $cSID | wc -c) 

case "$cSID" in
      [!0-9]*         ) echo -e "The staff ID should contain only digits\n "
	  sleep 0.5
	  fSID;;
                  
esac  
    while [ $wcSID -gt 4 ]; do 

  read -p "Please enter a value: " cSID 
wcSID=$(echo $cSID | wc -c) 
echo $wcSID
done 
read -p "u passed to stage 2! gratz" st2

Last edited by pludi; 09-01-2011 at 05:09 PM..
 

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LEARN ABOUT OSF1

atrm

atrm(1) 						      General Commands Manual							   atrm(1)

NAME

       atrm - Removes jobs spooled by at

SYNOPSIS

       atrm [-a] [-f  | -i] [job_number...] | [user...]

       The atrm command removes jobs that were created with the at command.

OPTIONS

       Removes	all  jobs  belonging to the person invoking atrm.  If invoked by a privileged user, all jobs on the queue are removed.	Suppresses
       the printing of all information about the jobs being removed.  Prompts before a job is removed; a response of y, or the locale's equivalent
       of y, causes the job to be removed.  Obsolete version of -a.

DESCRIPTION

       If one or more job numbers is specified, atrm attempts to remove only those jobs.

       If  one	or  more  usernames is specified, all jobs belonging to those users are removed.  This form of invoking atrm is useful only if you
       have superuser authority.

EXAMPLES

       To remove job number 62169200.a, created by user chinn, from the queue created by the at command, enter: atrm chinn.62169200.a

       Note that specifies an at job for sh.  (.f specifies an at job for csh, and specifies an at job for ksh.)

FILES

       Main cron directory.  List of allowed users.  List of denied users.  Spool area.  Queue description file for at, batch, and cron.

SEE ALSO

       Commands:  at(1), atq(1), cron(8)

       Files:  queuedefs(4)

																	   atrm(1)
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