copy-file <source file> to <target file> [ status <status> ]
File <source file> is copied into <target file>, which is created if it does not exist.
Status can be obtained in <status> variable, which is GG_ERR_OPEN if cannot open source file, GG_ERR_CREATE if cannot create target file, GG_ERR_READ if cannot read source file, GG_ERR_WRITE if cannot write target file, or number of bytes copied (including 0) on success.
Examples
copy-file"/home/user/source_file" to"/home/user/target_file" status st
