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Full Discussion: Bash script errors when executing
Top Forums Shell Programming and Scripting Bash script errors when executing Post 302637387 by chihung on Tuesday 8th of May 2012 08:09:40 PM
Old 05-08-2012
It will be hard for anyone to help you with this long script. What I can propose to you is to run it with "bash -x yourscript" to get the shell to print out the commands while it is executing.

You may try to set the PS4 variable to something that is easy for you to debug your script.

Here is a little example. Hope it helps:
Code:
$ export PS4="
--->DEBUG: "

$ cat a.sh
#! /bin/bash

echo Hello World
date
cal

$ bash -x a.sh

--->DEBUG: echo Hello World
Hello World

--->DEBUG: date
Wed May  9 08:08:22 SGT 2012

--->DEBUG: cal
      May 2012
Su Mo Tu We Th Fr Sa
       1  2  3  4  5
 6  7  8  9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31

This User Gave Thanks to chihung For This Post:
sea
 

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LEARN ABOUT CENTOS

btrfs-debug-tree

BTRFS-DEBUG-TREE(8)					      System Manager's Manual					       BTRFS-DEBUG-TREE(8)

NAME

       btrfs-debug-tree - dump Btrfs filesystem metadata into stdout.

SYNOPSIS

       btrfs-debug-tree [options] <device>

DESCRIPTION

       btrfs-debug-tree  is used to dump the whole tree of the given device.  This is maybe useful for analyzing filesystem state or inconsistence
       and has a positive educational effect on understanding the internal structure.  device is the device file where the filesystem is stored.

       Options

       -e   print detailed extents info.

       -d   print info of btrfs device and root tree dirs only.

       -r   print info of roots only.

       -b <block_num>
	    print info of the specified block only.

EXIT CODE

       btrfs-debug-tree will return 0 if no error happened.  If any problems happened, 1 will be returned.

AUTHOR

       Written by Shilong Wang and Wenruo Qu.

COPYRIGHT

       Copyright (C) 2013 Fujitsu, Inc.  License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to	change	and  redistribute  it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       mkfs.btrfs(8)

															       BTRFS-DEBUG-TREE(8)
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