utime
utime - set a file's last access and modify times
utime LIST
Changes the access and modification times on each file of a list of
files. The first two elements of the list must be the NUMERICAL access
and modification times, in that order. Returns the number of files
successfully changed. The inode modification time of each file is set
to the current time. Example of a ``touch'' command:
#!/usr/bin/perl
$now = time;
utime $now, $now, @ARGV;