creates an full path name for the specified relative path name.
res = fullpath(relative_path)
fullpath(relative_path) сreates an full path name for the specified relative path name.
On GNU/Linux relative_path needs to exist.
`cd`_(TMPDIR);
`mkdir`_(TMPDIR + "/niv1");
`mkdir`_(TMPDIR + "/niv1/niv2");
`mkdir`_(TMPDIR + "/niv1/niv2/niv3");
`mputl`_(' ', TMPDIR + "/niv1/test1.txt");
`mputl`_(' ' , TMPDIR + "/niv1/niv2/test2.txt");
`cd`_(TMPDIR + "/niv1/niv2/niv3");
r1 = fullpath("../../test1.txt")
r2 = fullpath("../test2.txt")
M = ["../../test1.txt", "../test2.txt"];
R = fullpath(M)
Version Description 5.4.0 Matrix of String managed (SEP 72)