untar


Purpose
Extract files from a Unix tar archive.
Synopsis
procedure untar(opt:integer,tarfile:text,dir:text, filters:string)
procedure untar(tarfile:text,dir:text)
procedure untar(tarfile:text)
Arguments
opt 
Options:
SYS_OVERWRT 
Do not replace existing files
SYS_NODIR 
Do not extract directories (only files)
SYS_DIRONLY 
Extract only directories
tarfile 
File name of the archive
dir 
Destination path (default: current directory)
filters 
File name filters (default: all files extracted)
Example
The following extracts all files included in the archive myfiles.tar to directory mydir:
untar("myfiles.tar","mydir")
Further information
1. The filters argument has a similar structure as the corresponding argument of procedure findfiles except that wildcard characters "*" and "?" may appear anywhere in a path. A file is extracted if it matches any of the patterns of this list.
2. When evaluating the filters, file name matching is achieved using function pathmatch and differences may be observed depending on the operating system (e.g. file names are case sensitive under Posix systems but not under Windows).
3. This implementation processes only regular files and directories: other file types included in the archive (like links) are silently ignored.
Related topics
tarlist, newtar
Module
mmsystem


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