Not with any builtin that I know of. The book below presents a script that allows breakpoints. You can download the code from Index of /bash2 , but you may need the support of the book. It's possible that you may be able to find Edition 2 used for an attractive price.
O'Reilly published a similar book on the Korn shell; code at Index of /korn2
Hi,
I was using AIX - ksh shell , and inorder to debug shell script I used set -vx to echo all the commands which are being executed.
Can anybody tell me the corresponding method in HP-UX - in tcsh shell.
Regards
Shihab (1 Reply)
Hello all,
I am trying to run a script and have not had much success running it...ne help debugging it will be appreciated..The ftp script alone works but not within the while loop.
below is the script
#!/usr/bin/ksh
destination_server=servename
destination_user_id=un... (1 Reply)
I am having problems w/this script. Menu is not comming up to prompt me. I've worked on it for days and still cannot see the problem. Anyone can help, I would appreciate it. Possible problems with syntax and function calls.
Thks...
TMP=$tapemgr/rpts/tmp
# TAPE MANAGER MAIN MENU
while : do... (8 Replies)
Hi all,
Am working on a script to understand the flow control of it..
Since i am from a C background i looking out for an easy way to analyze the script as it runs ..
In C/C++ we have F7 that starts execution from main() and proceeds accordingly..
I was wondering if there is a same approach... (2 Replies)
Hi all,
I searched to find out a few cp scripts that had progress bar, but did not compromise on performance, when my efforts were in vain i went ahead and wrote one of my own ,taking i/p frm other scripts...
But this is causing some errors and am unable to debug it.....pls help
Here is the... (1 Reply)
Hello, Some one asked me in the inteview.... The question is,
How do we debug the schell script before even running..... Interviewer
told me one clue... There is SET command to accomplish this... Can any
one tell me what kind of set commands.... Thanks. (2 Replies)
Newbie question. I cannot get "set -n" or "set -noexec on" to work on Linux or AIX! According to the man page and what I read online, it should inform me of syntax errors without executing commands in your script.
So, can someone PLEASE explain why this does not work?
... (2 Replies)
Hello Friends
I am having trouble with my script below. I will describe the problems below the code box. I am hoping that some of the experts here can help me.
#!/bin/bash
#=========================================================================================================
# Rsync File... (8 Replies)
hi all
only the weirdest thing happened with me just now. I was debugging a shell script and I found that a step that was supposed to execute later was getting executed prior to another step for no reason. You know any ?
i mean have a look at the following command-
here it tries to grep... (7 Replies)
Discussion started by: leghorn
7 Replies
LEARN ABOUT FREEBSD
ddb
DDB(8) BSD System Manager's Manual DDB(8)NAME
ddb -- configure DDB kernel debugger properties
SYNOPSIS
ddb capture [-M -core] [-N -system] print
ddb capture [-M -core] [-N -system] status
ddb script scriptname
ddb script scriptname=script
ddb scripts
ddb unscript scriptname
ddb pathname
DESCRIPTION
The ddb utility configures certain aspects of the ddb(4) kernel debugger from user space that are not configured at compile-time or easily
via sysctl(8) MIB entries.
To ease configuration, commands can be put in a file which is processed using ddb as shown in the last synopsis line. An absolute pathname
must be used. The file will be read line by line and applied as arguments to the ddb utility. Whitespace at the beginning of lines will be
ignored as will lines where the first non-whitespace character is '#'.
OUTPUT CAPTURE
The ddb utility can be used to extract the contents of the ddb(4) output capture buffer of the current live kernel, or from the crash dump of
a kernel on disk. The following debugger commands are available from the command line:
capture [-M core] [-N system] print
Print the current contents of the ddb(4) output capture buffer.
capture [-M core] [-N system] status
Print the current status of the ddb(4) output capture buffer.
SCRIPTING
The ddb utility can be used to configure aspects of ddb(4) scripting from user space; scripting support is described in more detail in
ddb(4). Each of the debugger commands is available from the command line:
script scriptname
Print the script named scriptname.
script scriptname=script
Define a script named scriptname. As many scripts contain characters interpreted in special ways by the shell, it is advisable to
enclose script in quotes.
scripts
List currently defined scripts.
unscript scriptname
Delete the script named scriptname.
EXIT STATUS
The ddb utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
The following example defines a script that will execute when the kernel debugger is entered as a result of a break signal:
ddb script kdb.enter.break="show pcpu; bt"
The following example will delete the script:
ddb unscript kdb.enter.break
For further examples, see the ddb(4) and textdump(4) manual pages.
SEE ALSO ddb(4), textdump(4), sysctl(8)HISTORY
The ddb utility first appeared in FreeBSD 7.1.
AUTHORS
Robert N M Watson
BUGS
Ideally, ddb would not exist, as all pertinent aspects of ddb(4) could be configured directly via sysctl(8).
BSD December 24, 2008 BSD