I am trying to figure out a way to use a if statement to run multiple sets 
of commands depending if one file exists, but I am unable to find any good 
documented ways of doing this.

Basic rough layout of what i would like to achieve is this:

Any help on getting the correct syntax for the if statement would be 
appreciated 



if file /volumes/vol1 exists { *exec { generate_loopback_tor: command => 
"/sbin/losetup /dev/loop6 /volumes/tor", unless => "/sbin/losetup -a| 
/bin/grep \"/volumes/tor\"", } *

*exec { generate_encrypt_tor:    command => " /sbin/cryptsetup create tor 
",    unless => "/usr/bin/test -e /dev/mapper/tor", }exec { 
generate_mount_tor: command => "/bin/mount /dev/mapper/tor /usr/local/tor", 
unless => "/bin/mount | /bin/grep \"/usr/local/tor\"", } }* else { exec { 
generate_empty_file_tor: command => "/bin/dd of=/volumes/tor bs=256M 
count=0 seek=1", unless => "/usr/bin/test -e /volumes/tor", } exec { 
generate_loopback_tor: command => "/sbin/losetup /dev/loop6 /volumes/tor", 
unless => "/sbin/losetup -a| /bin/grep \"/volumes/tor\"", } exec { 
generate_encrypt_tor: command => "/bin/echo \XXXXXXXXXX\" | 
/sbin/cryptsetup create tor /dev/loop6 -", unless => "/usr/bin/test -e 
/dev/mapper/tor", } exec { generate_zero_tor: command => "/bin/dd 
if=/dev/zero of=/dev/mapper/tor count=512 bs=1024", unless => "/sbin/fdisk 
-lu | /bin/grep \"/dev/mapper/tor\"", } exec { generate_mkfs_tor: command 
=> "/sbin/mke2fs -j -O dir_index /dev/mapper/tor ", onlyif => "/sbin/parted 
-l | /bin/grep \"Error: /dev/mapper/tor: unrecognised disk label\"", } exec 
{ generate_mount_tor: command => "/bin/mount /dev/mapper/tor 
/usr/local/tor", unless => "/bin/mount | /bin/grep \"/usr/local/tor\"", }
 

}

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