3.2.176 truncate

truncate 

FILEHANDLE

, 

LENGTH

 truncate 

EXPR

, 

LENGTH

This function truncates the file opened on FILEHANDLE , or named by EXPR , to the specified length. The function produces a fatal error if truncate (2) or an equivalent isn't implemented on your system. (You can always truncate a file by copying the front of it, if you have the disk space.)