I had to write a script to change my login password, and the script wasnt working fine. When I searched through the previous postings in this forum, I got the solution (using 'expect' tool).
But I would like to know why passwd command isnt working in scripts? (1 Reply)
I am using Ubuntu linux desktop, and I am trying to schedule a sheel script to run every 10minutes.
These are the steps I have taken:
crontab -e
added and saved this line to the file
# m h dom mon dow command
*/1 * * * * /home/enzo/Desktop/dlrecentuse
restarted cron:
sudo... (5 Replies)
Hi
I have downloaded a HTM file from the web.
What I want to do is perform a grep search of that file, searching for all strings where 'http' is present within the file, but only contains the word 'cache' within the string.
I've includeda sample file, which I'm trying to extract the above... (5 Replies)
I am trying to add some code to the begging of a script so that it will remove all the .transcript files, when their is no coressponding .wav file. But it doesnt work.
This is the code I have added:
for transcriptfile in `$voicemaildir/*.transcript`; do
wavfile=`echo $transcriptfile | cut -d'.'... (2 Replies)
I have a file
$ cat ip12
11.22.33.44
192.68.1.2
helo
l
72.34.34.200
333.444.555.666
12.23e.544.423
myip1 11.22.33.44
myip2 33.44.55.66 #fine this IP should also be listed
I do
$ cat ip12 | grep '^\{1,3\}\.\{1,3\}\.\{1,3\}\.\{1,3\}$'
11.22.33.44
192.68.1.2 (2 Replies)
I have a file with a lot of IP addresses in it named "address.list".
address.list looks something like this:
10.77.50.11
10.77.50.110
10.77.50.111
a bunch more addresses
For every IP address I need to grep another file to see if the IP address is in the other file:
for x in `cat... (5 Replies)
I have an input file:
class 1 3 5 10.10.10..0/23 hicks jimmy
class 3 10.12.10.0/22 mike
class.019283 10.10.15.10/20 henry
gym.847585 45 192.168.10.0/22 nancy jim steve maya
The output should look like this:
10.10.10..0/23
10.12.10.0/22
10.10.15.10/20
192.168.10.0/22
I have the... (3 Replies)
Hello Everyone,
I have a file sam1 with the below content
SYSYSID;MANDT;/SIE/AD_Z0M_INDX;/SIE/AD_Z0M_KEY1
echo $Regex
\bSYSYSID\b|\bMANDT\b|\b/SIE/AD_Z0M_INDX\b|\b/SIE/AD_Z0M_KEY1\b
cat sam1 | grep -Eo $Regex
I expect the result as
SYSYSID
MANDT
/SIE/AD_Z0M_INDX
/SIE/AD_Z0M_KEY1... (4 Replies)
Facing issues in grepping only the IP Address from a file i have tried the below and it was of not much help
awk -F"" '/(/ { print $3 }'
awk -F"</*(>" '/ip/ { print $2 }'
grep "ip" file1|cut -f2 -d"<"|cut -f2 -d">"
grep "(" file1 |cut -f2 -d"<"|cut -f2 -d">"
grep -e... (9 Replies)
Discussion started by: satishcarya
9 Replies
LEARN ABOUT DEBIAN
poe::filter::grep
POE::Filter::Grep(3pm) User Contributed Perl Documentation POE::Filter::Grep(3pm)NAME
POE::Filter::Grep - select or remove items based on simple rules
SYNOPSIS
#!perl
use POE qw(
Wheel::FollowTail
Filter::Line Filter::Grep Filter::Stackable
);
POE::Session->create(
inline_states => {
_start => sub {
my $parse_input_as_lines = POE::Filter::Line->new();
my $select_sudo_log_lines = POE::Filter::Grep->new(
Put => sub { 1 },
Get => sub {
my $input = shift;
return $input =~ /sudo[d+]/i;
},
);
my $filter_stack = POE::Filter::Stackable->new(
Filters => [
$parse_input_as_lines, # first on get, last on put
$select_sudo_log_lines, # first on put, last on get
]
);
$_[HEAP]{tailor} = POE::Wheel::FollowTail->new(
Filename => "/var/log/system.log",
InputEvent => "got_log_line",
Filter => $filter_stack,
);
},
got_log_line => sub {
print "Log: $_[ARG0]
";
}
}
);
POE::Kernel->run();
exit;
DESCRIPTION
POE::Filter::Grep selects or removes items based on simple tests. It may be used to filter input, output, or both. This filter is named
and modeled after Perl's built-in grep() function.
POE::Filter::Grep is designed to be combined with other filters through POE::Filter::Stackable. In the "SYNOPSIS" example, a filter stack
is created to parse logs as lines and remove all entries that don't pertain to a sudo process. (Or if your glass is half full, the stack
only selects entries that DO mention sudo.)
PUBLIC FILTER METHODS
In addition to the usual POE::Filter methods, POE::Filter::Grep also supports the following.
new
new() constructs a new POE::Filter::Grep object. It must either be called with a single Code parameter, or both a Put and a Get parameter.
The values for Code, Put, and Get are code references that, when invoked, return true to select an item or false to reject it. A Code
function will be used for both input and output, while Get and Put functions allow input and output to be filtered in different ways. The
item in question will be passed as the function's sole parameter.
sub reject_bidoofs {
my $pokemon = shift;
return 1 if $pokemon ne "bidoof";
return;
}
my $gotta_catch_nearly_all = POE::Filter::Grep->new(
Code => &reject_bidoofs,
);
Enforce read-only behavior:
my $read_only = POE::Filter::Grep->new(
Get => sub { 1 },
Put => sub { 0 },
);
modify
modify() changes a POE::Filter::Grep object's behavior at run-time. It accepts the same parameters as new(), and it replaces the existing
tests with new ones.
# Don't give away our Dialgas.
$gotta_catch_nearly_all->modify(
Get => sub { 1 },
Put => sub { return shift() ne "dialga" },
);
SEE ALSO
POE::Filter for more information about filters in general.
POE::Filter::Stackable for more details on stacking filters.
BUGS
None known.
AUTHORS & COPYRIGHTS
The Grep filter was contributed by Dieter Pearcey. Documentation is provided by Rocco Caputo.
Please see the POE manpage for more information about authors and contributors.
perl v5.14.2 2012-05-15 POE::Filter::Grep(3pm)