From: David Douthitt <DDouthitt@...>
Date: 2000-04-21T09:42:48-05:00
Subject: [ruby-talk:02551] Undocumented surprising Dir.glob() behavior

It would appear that Dir.glob() will not accept wildcards in the first element of an absolute path.  Why this is so I don't know.  It doesn't seem to do much since you can still do Dir.chdir("/") then use relative paths..... This behavior is not documented in the 1.4 manual for Dir.glob.

Here is the code and a run....

# uname -a
HP-UX myhost B.10.20 A 9000/861 2008378618 two-user license
# cat test.rb
#!/opt/ruby/bin/ruby

# ruby 1.4.3 (1999-12-08) [hppa1.1-hpux10.20]

# drwxr-xr-x   5 oracle     dba           1024 Feb  3 09:38 /u01
# drwxr-xr-x   6 oracle     dba           1024 Jan  3 10:19 /u02
# drwxr-xr-x   5 oracle     dba             96 Nov 22 17:49 /u03
# drwxr-xr-x   5 oracle     dba             96 Dec 23 14:13 /u04
# drwxr-xr-x   5 oracle     dba           1024 Nov 20 11:27 /u05
# drwxr-xr-x   7 oracle     dba           1024 Dec  2 19:21 /u06

Dir.chdir("/")

p Dir.glob("/u0[0-9]/*")
p Dir.glob("/u0*")
p Dir.glob("/u0?/*")
p Dir.glob("/u01/[a-z]*")
p Dir.glob("/u01/l[a-z]*")
p Dir.glob("/u*")
p Dir.glob("/u*/")

p Dir.glob("u0[0-9]/*")
p Dir.glob("u0*")
p Dir.glob("u0?/*")
p Dir.glob("u01/[a-z]*")
p Dir.glob("u01/l[a-z]*")
p Dir.glob("u*")
p Dir.glob("u*/")

# ./test.rb
[]
[]
[]
["/u01/lost+found", "/u01/loglist", "/u...
["/u01/lost+found", "/u01/loglist", "/u...
[]
[]
["u06/lost+found", "u06/ARCserve", "u06/data", "u06/oradata...
u03/oradata", "u02/lost+found", "u02/data", "u02/ncua", "u0...
["u02", "u03", "u04", "u01", "u05", "u06"]
["u06/lost+found", "u06/ARCserve", "u06/data", "u06/oradata...
["u01/lost+found", "u01/loglist", "u01/cunaccd_export.par",...
["u01/lost+found", "u01/loglist", "u01/listener.ora"]
["usr", "u02", "u03", "u04", "u01", "u05", "u06", "usage.rpt"]
["u06/", "u05/", "u01/", "u04/", "u03/", "u02/", "usr/"]