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Full Discussion: Unexpected command/filename substitution ( caused by alias?)
Top Forums UNIX for Dummies Questions & Answers Unexpected command/filename substitution ( caused by alias?) Post 302773357 by phil518 on Wednesday 27th of February 2013 06:44:21 PM
Old 02-27-2013
Unexpected command/filename substitution ( caused by alias?)
Hi:

there is a shell script, with the name "foo", located in a bin directory. in the same time, there is an alias "foo='/path/bin/foo' ", just for convenience.

in my home directory, there is a different script with name "foo" too. (a modified version.)

while in my home directory, when I do:

>$ cat foo

my local "foo" is displayed, as expected.

but if I do:
>$ source foo,

the common "/path/bin/foo" gets picked up, not my local one, as if the alias "foo" kicks in and substitutes the common "foo" for my local one.

to source my local "foo", I have to explicitly say:

>$ source ./foo

what I don't get is, the "foo" is the filename argument for both "cat" and "source" commands, but why the "foo" alias seemingly kicks in in "source" command, not the "cat" command.

Could any one shed some light on this?

Thanks.

NB Phil
 

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LEARN ABOUT BSD

moderators

MODERATORS(5)                                                   File Formats Manual                                                  MODERATORS(5)

NAME

       moderators - mail addresses for moderated Usenet newsgroups

DESCRIPTION

       The  GetModeratorAddress(3)  routine  reads  the file /etc/news/moderators to determine how to reach the moderator of a newsgroup.  This is
       used by inews(1) when an unapproved local posting is made to a moderated newsgroup.

       The file is read until a match is found.  Blank lines and lines starting with a number sign (``#'') are ignored.  All  other  lines  should
       consist of two fields separated by a colon.

       The  first  field  is  a  wildmat(3)-style pattern.  If it matches the name of the newsgroup, then the second field is taken to be a format
       string for sprintf(3).  This string should have at most one %s parameter, which will be given  the  name  of  the  newsgroup  with  periods
       transliterated to dashes.

       Here is a sample file:
              foo.important:announce-request@foo.com
              foo.*:%s@mailer.foo.com
              gnu.*:%s@prep.ai.mit.edu
              *:%s@uunet.uu.net
       Using the above file, postings to the moderated newsgroup in the left column will be sent to the address shown in the right column:
              foo.important       announce-request@foo.com
              foo.x.announce      foo-x-announce@mailer.foo.com
              gnu.emacs.sources   gnu-emacs-sources@prep.ai.mit.edu
              comp.sources.unix   comp-sources-unix@uunet.uu.net

HISTORY

       Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews.  This is revision 1.15, dated 1996/09/06.

SEE ALSO

       inews(1), inn.conf(5), libinn(3), wildmat(3).

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