here is a small script:
if ; then
echo please enter an argument
fi
if [ "$1" = "tom"; then
a=$1
echo $a
fi
here is my question. if the script name is j.sh and I run it : j.sh from shell prompt: without a parameter: it prints please enter an argument but if I go with . j.sh (current... (1 Reply)
Hi All,
I have come across a command
echo "123 abc" | sed 's/*/& &/'
output is
123 123 abc
then i tried in different ways to get 123 abc abc as output.
Can u please explain me the importance of & in the above command.
Thank you
- Chanakya (7 Replies)
#!/bin/ksh
for i in *.log*
do
ls $i|sed 's/\.log$//g' | while read file
do
echo "file $file is Running" >> lls.txt
echo "***************">> lls.txt
done
done
------------------------------------------------------------------
the output is :
file AdapterCCProvisioningInterface... (9 Replies)
Hello all,
i have a batmail process running on my machine(java process).
i just need a script we should detect whether the batchnail is running or not.If not it should restart it.
Can anyone assist me on this? (1 Reply)
I have a feeling my eyes are burned and I am just missing something small here but can somebody tell me why this is not working....
#!/bin/ksh
Trunk_Path=/lcl/sit/apps/Tivoli
types="-name '*.sh' -o -name '*.conf' -o -name '*.rules' -o -name '*.dat' -o -name '*.props' -o -name '*.sql' -o -name... (10 Replies)
Hi all,
I have two files in my folder
1.index.jsp
2.maintenance.jsp
Once hit the URL in IE,It will call the index.jsp file than application working fine.
I want to some maintenance in my application, during the application maintenance than it will... (1 Reply)
Hi I have the below file
Name=abc
Yr=2011
Mon=05
My script should be in such a way that whenever I run it then
Month should increment by 1 and if the month is 12 then when
I run the script then year should incremented by 1 and month
Should become 01(I.e jan)
Thanks for the help in... (6 Replies)
Frequently we need to stop or start services on Linux systems.
For exmaple : To start or stop vsftpd daemon
# /etc/init.d/vsftpd start
or
# /etc/init.d/vsftpd stop
Following script will check the vsftpd service and if it is running, it will be stopped or vice-versa.
# cat... (5 Replies)
Discussion started by: snjksh
5 Replies
LEARN ABOUT MOJAVE
path::class5.18
Path::Class(3) User Contributed Perl Documentation Path::Class(3)NAME
Path::Class - Cross-platform path specification manipulation
VERSION
version 0.33
SYNOPSIS
use Path::Class;
my $dir = dir('foo', 'bar'); # Path::Class::Dir object
my $file = file('bob', 'file.txt'); # Path::Class::File object
# Stringifies to 'foo/bar' on Unix, 'fooar' on Windows, etc.
print "dir: $dir
";
# Stringifies to 'bob/file.txt' on Unix, 'bobfile.txt' on Windows
print "file: $file
";
my $subdir = $dir->subdir('baz'); # foo/bar/baz
my $parent = $subdir->parent; # foo/bar
my $parent2 = $parent->parent; # foo
my $dir2 = $file->dir; # bob
# Work with foreign paths
use Path::Class qw(foreign_file foreign_dir);
my $file = foreign_file('Mac', ':foo:file.txt');
print $file->dir; # :foo:
print $file->as_foreign('Win32'); # foofile.txt
# Interact with the underlying filesystem:
# $dir_handle is an IO::Dir object
my $dir_handle = $dir->open or die "Can't read $dir: $!";
# $file_handle is an IO::File object
my $file_handle = $file->open($mode) or die "Can't read $file: $!";
DESCRIPTION
"Path::Class" is a module for manipulation of file and directory specifications (strings describing their locations, like
'/home/ken/foo.txt' or 'C:WindowsFoo.txt') in a cross-platform manner. It supports pretty much every platform Perl runs on, including
Unix, Windows, Mac, VMS, Epoc, Cygwin, OS/2, and NetWare.
The well-known module File::Spec also provides this service, but it's sort of awkward to use well, so people sometimes avoid it, or use it
in a way that won't actually work properly on platforms significantly different than the ones they've tested their code on.
In fact, "Path::Class" uses "File::Spec" internally, wrapping all the unsightly details so you can concentrate on your application code.
Whereas "File::Spec" provides functions for some common path manipulations, "Path::Class" provides an object-oriented model of the world of
path specifications and their underlying semantics. "File::Spec" doesn't create any objects, and its classes represent the different ways
in which paths must be manipulated on various platforms (not a very intuitive concept). "Path::Class" creates objects representing files
and directories, and provides methods that relate them to each other. For instance, the following "File::Spec" code:
my $absolute = File::Spec->file_name_is_absolute(
File::Spec->catfile( @dirs, $file )
);
can be written using "Path::Class" as
my $absolute = Path::Class::File->new( @dirs, $file )->is_absolute;
or even as
my $absolute = file( @dirs, $file )->is_absolute;
Similar readability improvements should happen all over the place when using "Path::Class".
Using "Path::Class" can help solve real problems in your code too - for instance, how many people actually take the "volume" (like "C:" on
Windows) into account when writing "File::Spec"-using code? I thought not. But if you use "Path::Class", your file and directory objects
will know what volumes they refer to and do the right thing.
The guts of the "Path::Class" code live in the Path::Class::File and Path::Class::Dir modules, so please see those modules' documentation
for more details about how to use them.
EXPORT
The following functions are exported by default.
file
A synonym for "Path::Class::File->new".
dir A synonym for "Path::Class::Dir->new".
If you would like to prevent their export, you may explicitly pass an empty list to perl's "use", i.e. "use Path::Class ()".
The following are exported only on demand.
foreign_file
A synonym for "Path::Class::File->new_foreign".
foreign_dir
A synonym for "Path::Class::Dir->new_foreign".
tempdir
Create a new Path::Class::Dir instance pointed to temporary directory.
my $temp = Path::Class::tempdir(CLEANUP => 1);
A synonym for "Path::Class::Dir->new(File::Temp::tempdir(@_))".
Notes on Cross-Platform Compatibility
Although it is much easier to write cross-platform-friendly code with this module than with "File::Spec", there are still some issues to be
aware of.
o On some platforms, notably VMS and some older versions of DOS (I think), all filenames must have an extension. Thus if you create a
file called foo/bar and then ask for a list of files in the directory foo, you may find a file called bar. instead of the bar you were
expecting. Thus it might be a good idea to use an extension in the first place.
AUTHOR
Ken Williams, KWILLIAMS@cpan.org
COPYRIGHT
Copyright (c) Ken Williams. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
Path::Class::Dir, Path::Class::File, File::Spec
perl v5.18.2 2017-10-06 Path::Class(3)