Creates an alias whith sudo prepended, if $EUID is not zero. Run "salias -h"
for details. See also xunfunction() below.
-: **show-archive()**
-Lists the contents of a (compressed) archive with the appropriate programs.
-The choice is made along the filename extension.
-
: **simple-extract()**
Tries to uncompress/unpack given files with the appropriate programs. If an URI
starting with https, http or ftp is provided simple-extract tries to download