NAME

Rex::Commands::Fs - Filesystem commands

DESCRIPTION

With this module you can do file system tasks like creating a directory, removing files, move files, and more.

SYNOPSIS

my @files = list_files "/etc";

unlink("/tmp/file");

rmdir("/tmp");
mkdir("/tmp");

my %stat = stat("/etc/passwd");

my $link = readlink("/path/to/a/link");
symlink("/source", "/dest");

rename("oldname", "newname");

chdir("/tmp");

is_file("/etc/passwd");
is_dir("/etc");
is_writeable("/tmp");
is_writable("/tmp");
   
chmod 755, "/tmp";
chown "user", "/tmp";
chgrp "group", "/tmp";

EXPORTED FUNCTIONS

list_files("/path");

This function list all entries (files, directories, ...) in a given directory and returns a array.

task "ls-etc", "server01", sub {
   my @tmp_files = grep { /\.tmp$/ } list_files("/etc");
};

ls($path)

Just an alias for list_files

symlink($from, $to)

This function will create a symlink from $from to $to.

task "symlink", "server01", sub {
   symlink("/var/www/versions/1.0.0", "/var/www/html");
};

ln($from, $to)

ln is an alias for symlink

unlink($file)

This function will remove the given file.

task "unlink", "server01", sub {
   unlink("/tmp/testfile");
};

rm($file)

This is an alias for unlink.

rmdir($dir)

This function will remove the given directory.

task "rmdir", "server01", sub {
   rmdir("/tmp");
};

mkdir($newdir)

This function will create a new directory.

task "mkdir", "server01", sub {
   mkdir "/tmp";
        
   mkdir "/tmp",
     owner => "root",
     group => "root",
     mode => 1777;
};

chown($owner, $file)

Change the owner of a file or a directory.

chown "www-data", "/var/www/html";
    
chown "www-data", "/var/www/html",
                       recursive => 1;

chgrp($group, $file)

Change the group of a file or a directory.

chgrp "nogroup", "/var/www/html";
   
chgrp "nogroup", "/var/www/html",
                    recursive => 1;

chmod($mode, $file)

Change the permissions of a file or a directory.

chmod 755, "/var/www/html";
   
chmod 755, "/var/www/html",
              recursive => 1;

stat($file)

This function will return a hash with the following information about a file or directory.

mode

size

uid

gid

atime

mtime

task "stat", "server01", sub {
   my %file_stat = stat("/etc/passwd");
};

is_file($file)

This function tests if $file is a file. Returns 1 if true. 0 if false.

task "isfile", "server01", sub {
   if( is_file("/etc/passwd") ) {
      say "it is a file.";
   }
   else {
      say "hm, this is not a file.";
   }
};

is_dir($dir)

This function tests if $dir is a directory. Returns 1 if true. 0 if false.

task "isdir", "server01", sub {
   if( is_dir("/etc") ) {
      say "it is a directory.";
   }
   else {
      say "hm, this is not a directory.";
   }
};

is_readable($file)

This function tests if $file is readable. It returns 1 if true. 0 if false.

task "readable", "server01", sub {
   if( is_readable("/etc/passwd") ) {
      say "passwd is readable";
   }
   else {
      say "not readable.";
   }
};

is_writable($file)

This function tests if $file is writable. It returns 1 if true. 0 if false.

task "writable", "server01", sub {
   if( is_writable("/etc/passwd") ) {
      say "passwd is writable";
   }
   else {
      say "not writable.";
   }
};

is_writeable($file)

This is only an alias for is_writable.

readlink($link)

This function returns the link endpoint if $link is a symlink. If $link is not a symlink it will die.

task "islink", "server01", sub {
   my $link;
   eval {
      $link = readlink("/tmp/testlink");
   };
   
   say "this is a link" if($link);
};

rename($old, $new)

This function will rename $old to $new. Will return 1 on success and 0 on failure.

task "rename", "server01", sub {
   rename("/tmp/old", "/tmp/new");
}; 

mv($old, $new)

mv is an alias for rename.

chdir($newdir)

This function will change the current workdirectory to $newdir. This function currently only works local.

task "chdir", "server01", sub {
   chdir("/tmp");
};

cd($newdir)

This is an alias of chdir.

df([$device])

This function returns a hashRef reflecting the output of df

task "df", "server01", sub {
    my $df = df();
    my $df_on_sda1 = df("/dev/sda1");
};

du($path)

Returns the disk usage of $path.

task "du", "server01", sub {
   say "size of /var/www: " . du("/var/www");
};

cp($source, $destination)

cp will copy $source to $destination (it is recursive)

task "cp", "server01", sub {
    cp("/var/www", "/var/www.old");
};

mount($device, $mount_point, @options)

Mount devices.

task "mount", "server01", sub {
   mount "/dev/sda5", "/tmp";
   mount "/dev/sda6", "/mnt/sda6",
              fs => "ext3",
              options => [qw/noatime async/];
   #
   # mount persistent with entry in /etc/fstab
     
   mount "/dev/sda6", "/mnt/sda6",
              fs => "ext3",
              options => [qw/noatime async/],
              persistent => TRUE;


};

umount($mount_point)

Unmount device.

task "umount", "server01", sub {
   umount "/tmp";
};

glob($glob)

task "glob", "server1", sub {
   my @files_with_p = grep { is_file($_) } glob("/etc/p*");
};