Sponsored Content
Full Discussion: Debug script
Operating Systems Linux Ubuntu Debug script Post 303033228 by Don Cragun on Tuesday 2nd of April 2019 12:53:50 AM
Old 04-02-2019
Quote:
Originally Posted by drew77
How can I debug this script?

I want to know what it is doing or not doing?

Code:
#!/bin/bash
#
# 
if [ "${1}" = "pre" ]; then
  # Do the thing you want before suspend here
  echo "we are suspending." > /tmp/systemd_suspend_test.txt
elif [ "${1}" = "post" ]; then
  # Do the thing you want after resume here
  echo "and we are back from being suspended" >> /tmp/systemd_suspend_test.txt
  #/usr/bin/gxmessage -fg red -font  'sans 30' -timeout 3  ' Computer has now resumed from suspend state.'
fi

Given that we have no access to your system and can't see any diagnostic messages produced while your script is running, that you have not said anything about what you think might not be working in your script, and have not told us what appears in the file named /tmp/systemd_suspend_test.txt after you run your script; I find it difficult to suggest what you might do differently to debug your code.

I guess one might ask why you're throwing away all of the debugging data you have collected whenever your script is invoked with the first operand set to pre?

I guess one might ask why you don't include any timestamps in your debugging output?

I guess one might ask why you don't include a set -vx command at the start of your script and save the diagnostic information that would produce in a log file?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Debug an Awk Script

I would like to extract the following fields from the text file attached. I copied the contents from a pdf file and pasted them into the text file so I can use awk to extract them. The layout is as listed below. name1,name2,name3,name4,Title,designation,nationality,dob, national ... (1 Reply)
Discussion started by: mboro
1 Replies

2. Shell Programming and Scripting

How to debug the awk script

Hi, How can I debug an awk script? I know that set -x can be used to debug a script. But this will not suite for awk scripts. Can anyone help me? Thanks in advance, Chella (2 Replies)
Discussion started by: chella
2 Replies

3. Shell Programming and Scripting

debug this script

echo "input time in hhmmss" read $st h=`echo $st | cut -c1-2` min=`echo $st | cut -c3-4` s=`echo $st | cut -c5-6` echo "input time in hhmmss" read $end h1=`echo $end | cut -c1-2` min1=`echo $end | cut -c3-4` s1=`echo $end | cut -c5-6` x= `expr $h /* 60 + $min` y= `expr $h1 /* 60 +... (8 Replies)
Discussion started by: abhishek27
8 Replies

4. UNIX for Advanced & Expert Users

How can debug our UNIX shell script?

Hi all, i have two simple questions here... 1. i want to know that how to debug the UNIX shell script? 2. is there any way to handling the exception in UNIX shell script like oracle exception handling? Please provide me those details it would be great help/ Thanks and Regards, MPS... (3 Replies)
Discussion started by: psiva_arul
3 Replies

5. Shell Programming and Scripting

If condition error-please debug my script

Hi All, I have a script which is based on calculating current time The script looks like this: whenever i try to run the script it gives me error:Please advice wherther i have made mistake with if condition or with for loop?? The code : set -x #!/usr/bin/ksh set -x... (7 Replies)
Discussion started by: usha rao
7 Replies

6. Shell Programming and Scripting

Problem with the script, help me debug

Hi, When i run the script ./script.sh sun, this give me no output, it should give me the list of file. If i run the script without the argument it should send me echo inside usage(). What is the problem? please help -Adsi #!/bin/sh ROOT_PATH=/net/icebox/vol/local_images/spins... (2 Replies)
Discussion started by: asirohi
2 Replies

7. Shell Programming and Scripting

Help with debug the script

Hi, I have this script, searches and sets variables, then searches and sets more variables from multiple files. I'd need to debug it a bit. #!/bin/bash egrep $1 `find | grep MAGT` >/tmp/resRA-$$ thread=`sed -n '/{0x/ {s/^.*{0x\(*\).*/\1/p;q}' /tmp/resRA-$$` tag=`sed -n '/Tag=/... (5 Replies)
Discussion started by: Vitoriung
5 Replies

8. Shell Programming and Scripting

Cant debug shell script

Hi I am relatively new in shell scripting Below is the code which i developed but for some reason, it keeps giving me error: /apps/bss/BatchProg/at1/batch/scripts/ksh/TBATLC02.ksh: syntax error at line 41 : `then' unmatched #!/usr/bin/ksh... (4 Replies)
Discussion started by: scripting_newbe
4 Replies

9. Shell Programming and Scripting

Debug script already running

Hello, is it possible to debug a script that is already running "on-demand"? Somehow a command like "set -x" but once you've executed the script. And another one to disable debugging? Thank you (0 Replies)
Discussion started by: asanchez
0 Replies

10. Shell Programming and Scripting

Debug perl script

Hi, I am trying to get squid up and running using a redirector process, and every time I try to load a web page, squid fails miserably. Can some one with perl and squid knowledge take a look at these codes and tell if something is wrong here. #!/usr/bin/perl # $| = 1; @endings = qw/... (0 Replies)
Discussion started by: jamie_123
0 Replies
APS2FILE(1)						    BSD General Commands Manual 					       APS2FILE(1)

NAME
aps2file -- printing to a file via apsfilter SYNOPSIS
aps2file [-D] [-Pqueue] [-Zoptions] [-ooutput] [input] aps2file [-h] DESCRIPTION
With aps2file you can direct the printer data generated by apsfilter(1) into an arbitrary file without the use of a spooler. OPTIONS
-h show help screen -D enable debug mode -Pqueue select a printer queue (different from the default one) -Zoptions use apsfilter command line options (comma-separated list) -ooutput direct data stream to output (default: stdout) input read data from input (default: stdin) Unlike printing with lpr(1), you can only use one input file at a time. Using aps2file is also the recommended way to create a debugging log of a failed printing attempt. If you include the -D flag, the apsfilter shell script will log every command and print it to stderr. To save the output for inclusion into a bug report, you should therefore use a command of the sort aps2file -D -o /dev/null [-P...] [-Z...] [input] 2> log.txt NOTES
aps2file only works correctly with entries in /etc/printcap that have been created by /usr/share/apsfilter/SETUP. FILES
/etc/printcap printer capability data base /usr/share/apsfilter/bin/apsfilter apsfilter script SEE ALSO
apsfilter(1), apsfilter-bug(1), apspreview(1), apsfilterrc(5), printcap(5) BUGS
See apsfilter software center - http://www.apsfilter.org/ - for new versions, bugfixes and known bugs. Please use the new tool apsfilter-bug(1) to release bug- or problem reports. It automatically presents you a form in an editor window which asks you some standard questions. If you save and quit the editor session, then this report is sent automatically via e-mail to the proper apsfilter mailinglist. If apsfilter fails to print something or prints it in a way you wouldn't expect and you want to report an apsfilter error then please save the debugging output of one print session using the new aps2file(1) utility by typing aps2file -D -Z options file > /dev/null 2> file.debug and including the debugging output in the file file.debug into the edit session of the apsfilter-bug utility, so that it is included into the mail to the apsfilter mailinglist. Please note that you need to run /bin/sh (Bourne Shell), bash or a compatible shell, so that the above mentioned output redirection works. Under C-shell (/bin/csh) or tcsh it would't work. If you don't know, then simply make sure you use the Bournce shell by typing /bin/sh or bash, then you should have no problems with redirection of stdout and stderr (> /dev/null 2> file.debug). DOCUMENTATION
See official apsfilter homepage http://www.apsfilter.org/handbook.html Apsfilter Handbook including the Frequently Asked Questions (FAQ) USER FORUM
Please send questions to the official apsfilter help channel apsfilter-help@apsfilter.org. The above section BUGS and the file HOWTO-BUGREPORTS tells you how to report bugs. If you want to know how to troubleshoot your apsfilter installation, please read the manpage aps2file(1) and apsfilter-bug(1) as well as the Apsfilter Handbook carefully. HISTORY
The aps2file manpage has been written by Michael LoBin <phallobst@web.de> and first appeared in apsfilter V 7.1.0. BSD
Dec 19, 2001 BSD
All times are GMT -4. The time now is 04:32 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy