Chmod changes mod of a path.

CreateFile creates an empty file with given length (if size > 0).

CreateFolder creates folder on local drive.

Elapsed gets time elapsed.

Exit exits the program with non-zero status code.

Finish exits the program with zero status code.

FromByteSize converts size string in bytes into uinit, e.g., 1024 into 1K.

GenTempFileName generate /tmp/%x files where %x is md5 value of all parts concate together.

GetDstPath gets the destination path.

GetFileCRC32C gets the crc32c of a file.

GetFileMD5 gets the md5 of a file.

GetFileModificationTime gets mtime of a file.

GetFileSize gets the size of a file.

GetRelativePath gets the relative path given path and directory.

GetTempFile gets a temp file name.

GetWorkDir returns the directory where the executable file put.

IsPathDirectory determines if a path is a directory.

IsPathExist determines if a path exists.

IsPathFile determines if a path is a file.

IsSubPath checks if a path is under another one in directory manner case 1: gs://abc/def -> gs://abc/def : true case 2: gs://abc/def -> gs://abc/de : false case 3: gs://abc/def -> gs://abc/def/ : false case 4: gs://abc/def/-> gs://abc/def/ : true case 5: gs://abc/def/ghi -> gs://abc/def : true case 6: gs://abc/def/ghi -> gs://abc/de : false case 7: gs://abc/def/ghi -> gs://abc/def/ : true.

IsTempFile checks if a file is temp file.

JoinPath combines dir and parts into a new path.

ParseFile parses file into dir, name.

ParseURL parses url into scheme, bucket, prefix.

Recovery recovers from exceptions.

SetFileModificationTime sets mtime to a file.

SetPrefixAsDirectory sets the prefix as directory.