Truncate a file to have a length of, at most, newsize bytes

Synopsis

• ftruncate [-fileId] file newsize

Description

Truncate a file to have a length of at most newsize bytes.

If the option -fileid is specified, file is an open file identifier, otherwise it is a file path.

This command is not available or not fully func- tional if the underlying operating system support is not available. The command infox have_truncate will indicate if this command may truncate by file path. The command infox have_ftruncate will indi- cate if this command may truncate by file id.