Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Redirection creates empty file Post 302702411 by surib on Tuesday 18th of September 2012 09:54:21 AM
Old 09-18-2012
Redirection creates empty file

I'm using a script that does some modifications to data on disc and updates the database. The script (perl) uses STDOUT so the results are printed to the screen. I don't have permissions to modify the script. I want to capture the results in a file so I can see if errors occurred and also keep track of where I am in the modifications. I've tried redirection and append with '> and >>' and I've tried 'tee and tee -a'. I don't get any errors, but the file remains empty - 0 file size. If I take out the redirection, the script runs fine, it's just that there are so many files modified that I can't see the entire output to note errors. Any ideas?
Code:
scriptname.pl -r /vol1/OPS -d DATATYPE -v VERSION -b 2005-04-05 -e 2005-04-06 | tee -a s4pa_delete_map.log

scriptname.pl -r /vol1/OPS -d DATATYPE -v VERSION -b 2005-04-06 -e 2005-04-07 >> s4pa_delete_map.log

Smilie

Moderator's Comments:
Mod Comment Please view this code tag video for how to use code tags when posting code and data.

Last edited by vbe; 09-18-2012 at 11:06 AM..
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Getting same exit status for empty and non empty file

Hi All, I am checking for a empty input file to do some further action , but I am getting exit status 0 in both the cases , for empty and non empty file both. The value of $? is coming 0 in if part also and else part too. #!/bin/ksh if ]; then echo "data" # exit 0 echo "$?" else... (4 Replies)
Discussion started by: mavesum
4 Replies

2. Shell Programming and Scripting

sed in script creates output file ending with '?' (^M)

Hi, I'm trying to use sed within a shell script (bash, running ubuntu). The command works fine from the command line, but when I use it within the script, rather than creating a file with the name I've specified, it creates one that ends with a question mark '?' when you use ls, e.g.... (3 Replies)
Discussion started by: jennykay
3 Replies

3. Shell Programming and Scripting

awk script creates empty line

I have the following awk script to which I pass the file > 10 0 0 10 0 0 > 12.997 0 5.71132 12.9098 0.0687626 5.48855 12.7506 0.174324 5.13225 12.5913 0.262662 4.80643 12.4316 0.335652 4.50283 12.2717 0.394598 4.21542 12.1113 0.440399 3.93957 11.9506 0.473646 3.67148 11.7894... (2 Replies)
Discussion started by: kristinu
2 Replies

4. Shell Programming and Scripting

Script sometimes creates an empty file

I have a script that runs ditto for me, and occasionally (if I exit the script while ditto is running in the background) it will leave an empty file named 0 in the script's directory. The next time I run the script, it generates incorrect data because of this file. I know I can easily insert a... (1 Reply)
Discussion started by: reid
1 Replies

5. Shell Programming and Scripting

Script sometimes creates an empty file

I have a script that runs ditto for me, and occasionally (if I exit the script while ditto is running in the background) it will leave an empty file named 0 in the script's directory. The next time I run the script, it generates incorrect data because of this file. I know I can easily insert a... (1 Reply)
Discussion started by: reid
1 Replies

6. Shell Programming and Scripting

Lock file creates with '?'

Hi, I am trying to create a lock file with the following code but for some reason after file is created it has wrong name "PASP?.lock??" Please let us know how to get rid of these '??' from file name and from where they are coming? #!/bin/ksh... (6 Replies)
Discussion started by: sandy162
6 Replies

7. Shell Programming and Scripting

Writing a script that creates a 1GB file with zeros using dd

I am new to Linux. Using latest version of Ubuntu. I want to make a script that creates a 1GB file filled with zeros using dd and then formats the file as vfat with a label of "MYFILE". If anyone can help me it would be appreciated. (9 Replies)
Discussion started by: paviter619
9 Replies

8. Red Hat

Script creates additional file

Hi, I have created a test script like this : # cat script1.sh DAY=$(date +%d) MONTH=$(date +%b) YEAR=$(date +%Y) BC01="Blast_BC01" BC15="Blast_BC15" DIR1="$MONTH$YEAR_$BC01" DIR2="$MONTH$YEAR_$BC07" DIR3="$MONTH$YEAR_$BC15" if ;then mkdir -p "$YEAR/$DIR3" fi # When I... (5 Replies)
Discussion started by: anaigini45
5 Replies

9. Shell Programming and Scripting

Writing a script that creates a 1GB file with zeros using dd

I am new to Linux. Using latest version of Ubuntu. I want to make a script that creates a 1GB file filled with zeros using dd and then formats the file as vfat with a label of "MYFILE". If anyone can help me it would be appreciated. (1 Reply)
Discussion started by: amandasaza08
1 Replies
Test::Script(3) 					User Contributed Perl Documentation					   Test::Script(3)

NAME
Test::Script - Basic cross-platform tests for scripts DESCRIPTION
The intent of this module is to provide a series of basic tests for 80% of the testing you will need to do for scripts in the script (or bin as is also commonly used) paths of your Perl distribution. Further, it aims to provide this functionality with perfect platform-compatibility, and in a way that is as unobtrusive as possible. That is, if the program works on a platform, then Test::Script should always work on that platform as well. Anything less than 100% is considered unacceptable. In doing so, it is hoped that Test::Script can become a module that you can safely make a dependency of all your modules, without risking that your module won't on some platform because of the dependency. Where a clash exists between wanting more functionality and maintaining platform safety, this module will err on the side of platform safety. FUNCTIONS
script_compiles script_compiles( 'script/foo.pl', 'Main script compiles' ); The "script_compiles" test calls the script with "perl -c script.pl", and checks that it returns without error. The path it should be passed is a relative unix-format script name. This will be localised when running "perl -c" and if the test fails the local name used will be shown in the diagnostic output. Note also that the test will be run with the same perl interpreter that is running the test script (and not with the default system perl). This will also be shown in the diagnostic output on failure. script_runs script_runs( 'script/foo.pl', 'Main script runs' ); The "script_runs" test executes the script with "perl script.pl" and checks that it returns success. The path it should be passed is a relative unix-format script name. This will be localised when running "perl -c" and if the test fails the local name used will be shown in the diagnostic output. The test will be run with the same perl interpreter that is running the test script (and not with the default system perl). This will also be shown in the diagnostic output on failure. SUPPORT
All bugs should be filed via the bug tracker at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Script> For other issues, or commercial enhancement and support, contact the author. AUTHOR
Adam Kennedy <adamk@cpan.org> SEE ALSO
prove, <http://ali.as/> COPYRIGHT
Copyright 2006 - 2009 Adam Kennedy. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. perl v5.16.3 2009-11-24 Test::Script(3)
All times are GMT -4. The time now is 09:12 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy