Rex::Commands::Fs(3) Filesystem commands

DESCRIPTION

With this module you can do file system tasks like creating a directory, deleting files, moving 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");
 };

This command will not be reported.

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");
 };

Since: 0.45 Please use the file() resource instead. 

 task "prepare", sub {
   file "/tmp",
     ensure => "absent";
 };

mkdir($newdir)

This function will create a new directory.

Since: 0.45 Please use the file() resource instead. 

 task "prepare", sub {
   file "/tmp",
     ensure => "directory",
     owner  => "root",
     group  => "root",
     mode   => 1777;
 };
 
 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;

This command will not be reported.

If you want to use reports, please use the file() resource instead.

chgrp($group, $file)

Change the group of a file or a directory. 

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

This command will not be reported.

If you want to use reports, please use the file() resource instead.

chmod($mode, $file)

Change the permissions of a file or a directory. 

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

This command will not be reported.

If you want to use reports, please use the file() resource instead.

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");
 };

This command will not be reported.

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.";
   }
 };

This command will not be reported.

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.";
   }
 };

This command will not be reported.

is_symlink($file)

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

 task "issym", "server01", sub {
   if( is_symlink("/etc/foo.txt") ) {
     say "it is a symlink.";
   }
   else {
     say "hm, this is not a symlink.";
   }
 };

This command will not be reported.

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.";
   }
 };

This command will not be reported.

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.";
   }
 };

This command will not be reported.

is_writeable($file)

This is only an alias for is_writable.

This command will not be reported.

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);
 };

This command will not be reported.

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");
 };

This command will not be reported.

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");
 };

This command will not be reported.

du($path)

Returns the disk usage of $path. 

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

This command will not be reported.

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",
          ensure    => "present",
          type      => "ext3",
          options   => [qw/noatime async/],
          on_change => sub { say "device mounted"; };
   #
   # mount persistent with entry in /etc/fstab
 
   mount "/dev/sda6", "/mnt/sda6",
          ensure     => "persistent",
          type       => "ext3",
          options    => [qw/noatime async/],
          on_change  => sub { say "device mounted"; };
 
   # to umount a device
   mount "/dev/sda6", "/mnt/sda6",
          ensure => "absent";
 
 };

In order to be more aligned with `mount` terminology, the previously used `fs` option has been deprecated in favor of the `type` option. The `fs` option is still supported and works as previously, but Rex prints a warning if it is being used. There's also a warning if both `fs` and `type` options are specified, and in this case `type` will be used.

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*");
 };

This command will not be reported.

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