Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: In Shell Script Does Second Command Wait For First Command To Complete
Top Forums Shell Programming and Scripting In Shell Script Does Second Command Wait For First Command To Complete Post 302836441 by vidyadhar85 on Wednesday 24th of July 2013 07:28:00 AM
Old 07-24-2013
Quote:
Originally Posted by angshuman
Hi,

Thank you for your reply. This was also my understanding. I am not running the first process in background. However, I get the error intermittently that file does not exist. Hence, I wanted to confirm.

Thanks once again for your confirmation.

Angshuman
The error will occur when your command to create that file wont find any patterns which you are searching in the file thus no tempfile gets generated.

add below block to avoid it

Code:
 
if [ -f $TEMPFILE ] ; then
mv $TEMPFILE $ORIGFILE
fi

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

wait command - cat it wait for not-chile process?

Did not use 'wait' yet. How I understand by now the wait works only for child processes, started background. Is there any other way to watch completion of any, not related process (at least, a process, owned by the same user?) I need to start a background process, witch will be waiting... (2 Replies)
Discussion started by: alex_5161
2 Replies

2. Shell Programming and Scripting

can anyone help with shell script command about searching word with grep command?

i want to search in the current directory all the files that contain one word for example "hello" i want to achieve it with the grep command but not with the grep * (2 Replies)
Discussion started by: aintour
2 Replies

3. UNIX for Dummies Questions & Answers

How do you wait for command substitution processes to complete?

When running a command using the >(cmd) syntax in bash how do you wait for the command to complete before moving on in your script? Here is a simple example: zcat largefile.gz | tee >(wc && echo “HELLO”) > /dev/null # I tried wait, here but it doesn't wait for the process in the subshell.... (8 Replies)
Discussion started by: mrvwman
8 Replies

4. Shell Programming and Scripting

Shell script runs fine in Solaris, in Linux hangs at wait command

HI, I have a strange problem. A shell script that runs fine on solaris. when i ported to linux, it started hanging. here is the core of the script CFG_FILE=tab25.cfg sort -t "!" -k 2 ${CFG_FILE} | egrep -v "^#|^$" | while IFS="!" read a b c do #echo "jobs output" #jobs #echo "jobs... (13 Replies)
Discussion started by: aksaravanan
13 Replies

5. Solaris

Show complete command on command line when we use 'ps'

Hi, When I query using ps -ef, the complete command is not displayed and is truncated. Can you please tell me a method to resolve this ? I have tried the below. ps -ef | cat ps -ef | grep imp >/tmp/t1.txt /usr/ucb/ps -auxw pargs <pid> /usr/ucb/ps -aefyl | grep imp Thanks (11 Replies)
Discussion started by: mk1216
11 Replies

6. Shell Programming and Scripting

When i am trying to execute export command within a shell script it is saying command not found.

I am running the export command within a view to use that value inside my build script. But while executing it it is saying "export command not found" My code is as follows: -------------------------- #!/bin/sh user="test" DIR="/bldtmp/"$user VIEW="test.view1" echo "TMPDIR before export... (4 Replies)
Discussion started by: dchoudhury
4 Replies

7. Shell Programming and Scripting

Korn shell. wait command and crontab

I have the following ksh script: sqlplus usr1/pw1@DB1 @$DIR/a.sql $1 & sqlplus usr2/pw2@DB2 @$DIR/b.sql $1 & wait echo "Done!" Where $DIR is a variable with the absolute path where a.sql and b.sql are. For some time, I've been running this script daily and it works fine. The intentions is... (5 Replies)
Discussion started by: acarpio89
5 Replies

8. Shell Programming and Scripting

Wait for one processes to complete in a shell script

Let's say I start process A.sh, then start process B.sh. I call both of them in my C.sh How can I make sure that B starts its execution only after A.sh finishes. I have to do this in loop.Execution time of A.sh may vary everytime. It is a parameterized script. (17 Replies)
Discussion started by: rafa_fed2
17 Replies

9. Shell Programming and Scripting

Bash script parallel tasks and command to wait untill complete?

Hello, im having bash script with while *** command1 && command2 && command3 && done i want to ask how i can prevent overloading server, by waiting untill all commands complete? any low resources intensive command like "wait" - i dont know if exist? (2 Replies)
Discussion started by: postcd
2 Replies

10. UNIX for Dummies Questions & Answers

Shell script not working but command works in command prompt

Hi everyone I have a problem with my script If I try directly this command /usr/bin/nice -n 19 mysqldump -u root --password="******" wiki_schneider -c | nice -n 19 gzip -9 > /point_de_montage/$(date '+%Y%m%d')-wiki-db.sql.gz It works But if I simply add this command in a script and... (8 Replies)
Discussion started by: picemma
8 Replies

LEARN ABOUT MOJAVE

locale::codes::langfam5.18

Locale::Codes::LangFam(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangFam(3pm)

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. A code set may be specified using either a name, or a
       constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2013-11-04					       Locale::Codes::LangFam(3pm)
All times are GMT -4. The time now is 10:58 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy