I have to add a variable value to an array, something like this:
......
@my_array_name = $value_of_this_variable;
This doesnt seem to work, any ideas why?
Thanks! (4 Replies)
I am trying to use a script to replace the header of each file, whose filename are stored within the array $test, using the sed command within a Perl script as follows:
$count = 0;
while ( $count < $#test )
{
`sed -e 's/BIOGRF 321/BIOGRF 332/g' ${test} > 0`;
`cat 0 >... (2 Replies)
Hi,
Is there an easy way to simulate following Perl code in Bash.
if ( grep {$my_value eq $_} @ARGV ){
print "Do Something\n";
} else {
die "Invalid value";
} (0 Replies)
Hi,
I have 2 arrays:
@names=qw(amith veena chaitra);
@files=qw(file.txt file1.txt file3.txt);
There is one to one relationship between names and files.
There needs to be mapping created between names and files.
The output should be like this:
amith --> file.txt
veena --->... (3 Replies)
I have an array and two variables as below,
I need to check if $datevar is present in $filename.
If so, i need to replace $filename with the values in the array.
I need the output inside an ARRAY
How can this be done.
Any help will be appreciated. Thanks in advance. (2 Replies)
Hi all,
Not sure if this should be in the programming forum, but I believe it will get more response under the Shell Programming and Scripting FORUM.
Am trying to write a customized df script in Perl and need some help with regards to using arrays and file handlers.
At the moment am... (3 Replies)
Hi,
i want to search and replace array values by using perl
perl -pi -e "s/${d$i]}/${b$j]}" *.xml
i am using while loop for the same. if i excute this,it shows "Substitution replacement not terminated at -e line 1.".
please tell me what's wrong this line (1 Reply)
Hi all,
I have written a perl code and stored the data into Data structure using Data::Dumper module.
But not sure how to retreive the data from the Data::Dumper.
Eg.
Based on the key value( Here CRYPTO-6-IKMP_MODE_FAILURE I should be able to access the internal hash elements(keys) ... (1 Reply)
I'm trying to exlude a list of values with perl to process while reading in a file. Is there a way to use the next if with a list?
Example:
@array = qw(val1 val2 val3 val6);
while (<>) {
next if $_ =~ @array; # values I don't want to process here
print; # process the rest here
}... (8 Replies)
Discussion started by: timj123
8 Replies
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)