RunCmdForNewerInput     Run a command if input files are newer than
                        outputs
abs2rel                 Remove common part of two paths, leaving
                        relative path
file.hardlink           Make hardlink to file
file.swap               Swap names of two files (by renaming first to a
                        temporary file)
gzip.crc                Extract the crc (32 bit hash) of a gzip file
is.gzip                 Check if a file is a gzip file
makelock                Make and remove (NFS safe) lock files
nat.utils               nat.utils: File System Utility Functions for
                        NeuroAnatomy Toolbox
ncpus                   Return number of cpus (or a default on failure)
touch                   Use unix touch utility to change file's
                        timestamp
zipinfo                 Return information about a zip archive using
                        system unzip command
zipok                   Verify integrity of one or more zip files
