Hi,
Please could sombody advise where I am going wrong:
find . -name "file" -exec echo "reply" \;
seems to work fine, but
find . ! -name "file" -exec echo "reply" \;
returns a reply when the file exists - I wish it not to or vice-versa.
Thank-you. (1 Reply)
I have a file coming in with many columns, but the first character of the the coumn is a record type, if I wanted to get a true/false kind of response as to whether it contains at least one of each type of record how would be best?
sed -e '/01/!d; /02/!d; /03/!d; /04/!d' datafile
returns... (4 Replies)
Hi,
I'm calling an oracle procedure from shell script, this procedure has boolean parameter, the default is false, but I need to pass true value to the procedure... how can I do that in shell script , below is my script:
################ Initialise Environment #################
initialise()... (0 Replies)
Hi there,
Sorry if the title doesn't mean much to you, I don't know how to sum up my pb in one line.
I'd like to set a value to 0 or 1 depending on the result of a comparison. Here's what I do:
supernova:~# a=
supernova:~# isempty=$(] && echo 1 || echo 0)
supernova:~# echo $isempty
1... (4 Replies)
Hi everybody:
I'm working on a script to send emails with logs attached based on one single rule..."check if the number of errors has increased since the last time the script ran"
Basically what my script does is read from a previous file with the last trace of errors the previous error... (3 Replies)
1. The problem statement, all variables and given/known data:
Im experimenting with if expressions for an assignment. What i want to do is check if an input of read x y z will be checked against x for 1-999 for y for and for z for 1-999. Am i doing this right? or perhaps you could tell me... (0 Replies)
Can someone, please, help me to make this condition valid/accepted in bash?
I really cannot.
I'm stuck with the brackets...
This one tells me: missing `]'
if ]; then
# NOTIFY ERROR...
fi
And... I'd also appreciate a link to bash documents that explain these things. All... (2 Replies)
Dear all,
IT seems to be rather small issue, but is not resolved. What Google suggest does no work..!
#!/bin/bash
date
jobNo=$(awk '/Jobs with... (4 Replies)
hi, im learning python language. and my teacher gives me this question on class:
Boolean expression :
not (p or not q)
what is the correct answer for that? i still dont understand, and please give me a link for a new beginner in python to learn.
thanks (1 Reply)
#!/bin/bash
if &&
then
echo "True"
else
echo "False"
fi
Hi everyone, I am new to UNIX, here I have a if statement elevating two boolean conditions. I thought the output should be True because there are + in the statement. But it turns out to be False.
Can anyone... (3 Replies)
Discussion started by: mryuyu1111
3 Replies
LEARN ABOUT CENTOS
file::find::rule::extending
File::Find::Rule::Extending(3) User Contributed Perl Documentation File::Find::Rule::Extending(3)NAME
File::Find::Rule::Extending - the mini-guide to extending File::Find::Rule
SYNOPSIS
package File::Find::Rule::Random;
use strict;
# take useful things from File::Find::Rule
use base 'File::Find::Rule';
# and force our crack into the main namespace
sub File::Find::Rule::random () {
my $self = shift()->_force_object;
$self->exec( sub { rand > 0.5 } );
}
1;
DESCRIPTION
File::Find::Rule went down so well with the buying public that everyone wanted to add extra features. With the 0.07 release this became a
possibility, using the following conventions.
Declare your package
package File::Find::Rule::Random;
use strict;
Inherit methods from File::Find::Rule
# take useful things from File::Find::Rule
use base 'File::Find::Rule';
Force your madness into the main package
# and force our crack into the main namespace
sub File::Find::Rule::random () {
my $self = shift()->_force_object;
$self->exec( sub { rand > 0.5 } );
}
Yes, we're being very cavalier here and defining things into the main File::Find::Rule namespace. This is due to lack of imaginiation on
my part - I simply can't find a way for the functional and oo interface to work without doing this or some kind of inheritance, and
inheritance stops you using two File::Find::Rule::Foo modules together.
For this reason try and pick distinct names for your extensions. If this becomes a problem then I may institute a semi-official registry
of taken names.
Taking no arguments.
Note the null prototype on random. This is a cheat for the procedural interface to know that your sub takes no arguments, and so allows
this to happen:
find( random => in => '.' );
If you hadn't declared "random" with a null prototype it would have consumed "in" as a parameter to it, then got all confused as it doesn't
know about a '.' rule.
AUTHOR
Richard Clamp <richardc@unixbeard.net>
COPYRIGHT
Copyright (C) 2002 Richard Clamp. All Rights Reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
File::Find::Rule
File::Find::Rule::MMagic was the first extension module, so maybe check that out.
perl v5.16.3 2011-09-19 File::Find::Rule::Extending(3)