Hi,
I am stuck into a situation where i want to execute a command in my shell script well along with a previous command in order to achieve something but i am not figuring out a way.
here is a snippet:
in the above, if you see, i am trying to restart a service first.
What happens is that as soon as that command of restart starts running, there is a temporary lock file created.
However, that lock file is causing some performance issues (the restart takes a long time because of the lock file).
Now, i want to override this event by deleting the lock file as soon as the restart command runs.
so, i am looking for way where i can delete the file as soon as the restart command starts running, which i am sure will solve my problem
Is there any way where i can run both commands in parallel (executing both commands together)
Please can any one guide me on this ?
Basically, I would like to run an mpirun query on my web server to query your databases via yours when using the BLAST program, however the server seems not able to execute even basic mpirun programs such as cpi (to calculate pi). Are there any settings I should take note of?
I am running Perl... (0 Replies)
Hi,
please can someone point me in the right direction with a shell scripting problem.
I want to execute a command in a for loop and the command should be started not one-by-one meaning the for loop is waiting for the exit code , it should be started in parallel.
I have a plain text file... (3 Replies)
Hi All,
I have 3 shell scripts, Script1,Script2 and Script3. Now I want to run Script1 and Script2 in parallel and Script3 should depend on successful completion of both Script1 and Script2.
Could you please suggest an approach of acheiving this...
Thanks in advance (2 Replies)
Hi Folks,
I have a small doubt, the binary commands under /bin and /sbin as well as other path binary files, if you peek deep into that, you can find the difference in the way of normal perl programming and some commands will be like binary files. how are the commands executing like the... (3 Replies)
Hi,
I want to run these two commands one after the other.
awk 'BEGIN {OFS="\t"} {print $2}'
sort -u
rather than typing awk 'BEGIN {OFS="\t"} {print $2}' file1 > file2, then sort -u file2 > file3. Is it possible to run both commands on file1 then get output file3?
Its kinda hard for... (5 Replies)
I need to execute a command to run my script several times with varying parameters
perl ex.pl -b 130198 -e 130884 -c plot plot.txt 1_plot.txt
perl ex.pl -b 1345 -e 1308 -c plot plot.txt 2_plot.txt
perl ex.pl -b 1345567 -e 130898 -c plot plot.txt 3_plot.txt
.
.
.
100's of excutions
... (2 Replies)
Hi Experts,
There is a shell script that accepts positional parameter between 1-25 to execute case statement of script depending upon the parameter passed.
Now I need to run all the 25 sessions parallely. In each option of case statement it is connecting with sqlplus and executing a select... (11 Replies)
I have n number of SQL queries needs to executed in Shell. Result of this query need to assign in a variable. Once all the queries are executed script needs to exit.
Sample Query:
SQL 1: Select Count(*) from TABLE GROUP BY COL1,COL2
SQL 2: Select Count(*) from TABLE GROUP BY COL1,COL2
... (2 Replies)
Hi all.
Long time!!
Hope you're doing well..
I've stumbled on a peculiar siutaion here, and would expect help from this forum on a clean resolution.
We are running an rm and find command simultaneously from two different Unix sessions of the same user(let's say USER01) and on the same... (3 Replies)
Hi Folks,
I have requirement to pull a bunch of SQL's from a table in DB and execute them in parallel and update the status of each query as and when they complete. Can you please help me with ideas on how this can be achieved?
create table list_of_sql
(
id number,
full_sql... (3 Replies)
Discussion started by: member2014
3 Replies
LEARN ABOUT SUNOS
goto
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)