How to restart the same step when return value is not equal to zero?
Hi Again Guru's
One of the requirements for the shell script is that when the return value of a given function is not equal to zero, it should have the option for the user to re-execute the function that has failed.
Example:
the script has different functions:
func_1()
func_2()
func_3()
func_4()
....
when func_1 fails, it should ask the user to make some necessrary corrections and once done, it should re-execute that same function.
HI
I am new to unix and need to install sco unix on a new server - could anybody help me with the steps I need to take - the hd is a 9gb scsi drive (pretty old machine)
Thanks (1 Reply)
I am new to unix and server at my job crashed due to hardware problem. I'm now opted to install sco unix on a new server - could anybody help me with the steps I need to take (pretty old machine)
Thanks & Regards
Nancy :( (0 Replies)
Hi all,
The following script is fine when I work via command line
m=1
c=0
while
do
echo $m
gnokii --getsms IN $m > out.txt;
m=`expr $m + 1`;
cat out.txt >> message_log;
############
read first crap< <(sed -n '/Text:/{n;p;}' out.txt);
read message< <(sed -n '/Text:/{n;p;}'... (2 Replies)
Thank all of you.
May you explain step by step where and how I will add pseudo code
Note : I have Linux 2.6.24-26-server on x86_64
dears kindly help me (3 Replies)
Hi to all,
I don't know if someone has done sometime a MS Excel Macro, that allows us to press F8 over the code
to see step by step, to mention something, how is running the code, which values take the variables,
if some loop is executing correct or where a error occurs, and some other... (7 Replies)
Hi Guys,
does anyone know of a step by step guide on how configure apache2 web server in solaris 10?
I will really appreciate it.
Thanks a lot (1 Reply)
FYI,
I'm slowly removing a lot of the bold font-styles from titles of discussions, forum titles, etc
I'm not removing bold for the entire site because we do need bold from time to time, especially in posts and sometimes in other places.
However, the original forum style had way too much... (3 Replies)
Discussion started by: Neo
3 Replies
LEARN ABOUT SUNOS
return
exit(1) User Commands exit(1)NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps
SYNOPSIS
sh
exit [n]
return [n]
csh
exit [ ( expr )]
goto label
ksh
*exit [n]
*return [n]
DESCRIPTION
sh
exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of
the last command executed (an EOF will also cause the shell to exit.)
return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe-
cuted.
csh
exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the
expression expr.
The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches
for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to
jump to a label that occurs between a while or for built-in command and its corresponding end.
ksh
exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8
bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing
a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit
except for a shell which has the ignoreeof option (See set below) turned on.
return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the
least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return
is invoked while not in a function or a '.' script, then it is the same as an exit.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO break(1), csh(1), ksh(1), sh(1), attributes(5)SunOS 5.10 15 Apr 1994 exit(1)