It is not unusual to forget about good coding practices when writing scripts. This is wrong. You already have a script which checks for one file one time. Why don't you put what you have into a function (read about shell functions in the man page of your shell) and call that function?
If you have a command, say: "foocommand", and want to execute it a 100 times, this usually looks like (pseudocode)
Wouldn't it be easier to write something like this in shell code, instead of cramming all the functionality into one big loop? Incidentally it would also bring a solution to your other problem once you figure out how to pass parameters to a function.
Anopther thing:
This is neither wrong nor illegal, but you should avoid that anyway. Backticks are outdated and deprecated and generally not considered good style. Furthermore, in modern shells you do not need "expr" because any shell has a built-in way to handle integer operations. This:
Does the same in ksh and bash and is easier to read too. If you need process substitution (in this case you don't) you wouldn't use backticks either but:
Hello:
Executing following script i'm getting error:
1=1+1: 0403-058 Assignment requires an lvalue.
It's not assuming the counter but i don't know why.
Some hint?
Thank you very much in advance.
#!/bin/ksh
<path>/tiempos.txt
num_exe=1
TIEMPOS=<path>/tiempos.txt
while ]
do (2 Replies)
I have generated a script that will email a list of people if a certain PID is not running, using "mailx". I have the script running every 5 minutes as a cron job.
I want the script to stop sending an email, if the email has been sent 5 times (meaning PID is dead). I want this so that my... (3 Replies)
Hi,
I'm new to unix and have a problem? I'm writing a basic script in ksh and it is a basic quiz with 5 questions. I need to be able to accumulate the correct answers at the end and echo out the total correct answers, I cannot work it out? Please see script so far. If anyone can help that will... (2 Replies)
I have looked high and low, tryed lots of diffrent things but cant get a simple counter to work right.
what i need is to increase a count ever time it finishes the test, pass or fail. example TEST PASS 1, NEXT TEST PASS 2,
I curently have
set foo o
while {$foo <=5} {
incr foo
puts... (1 Reply)
I am executing the following script using 'awk -f process.awk out' where 'out' is the input file which consists of 5000 sequences. Each time it takes one sequence, run the below program by creating a directory, run the mfold command within that directory, running another shell script 'final5' and... (2 Replies)
Hi,
I am writing a script which processes large number of files in a directory. I wanto display a counter which increment after processing each file. I am processing each file in a for loop. If I echo a variable with its value increasing with each file, I will get around 5000 lines as output.... (10 Replies)
Hello all!
This is my first post and I'm very new to programming. I would like help creating a simple perl or bash script that I will be using in my work as a junior bioinformatician.
Essentially, I would like to take a tab-delimted or .csv text with 3 columns and write them to a "3D" matrix:
... (16 Replies)
I want to run my shell script to the limit number.Suppose I know in advance that MAX=5 then I want that my script run 5 times only.Something like below$ vi testingMAX=5COMMAND="ssh -l stpuser VHLDVWSAD001 /projects/st/utils/deploy/deployall.sh >/dev/null 2>&1 &" ; sleep 20;count=0while... (2 Replies)
Hello,
I am having trouble calculating some numbers and I was hoping someone could help me solve this.
I have one file with 1 column and what I'm trying to do is add up the lines until a certain value is reach, then jump to where it last finished counting and continue.
so for ex: if I... (27 Replies)
Discussion started by: verse123
27 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)