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UNIX for Dummies Questions & Answers
Comparing two files and noting matches
Post 10713 by Shakey21 on Monday 19th of November 2001 08:17:45 PM
11-19-2001
IN UNIX: I would be looking at...
The sort, uniq and diff commands.
Without much detail I guess you would have to sort the names in the two files, then diff the two files and use the redirect (>
to write them to a single (3rd) file.
ie diff file1 file2 > file3
Uniq would be used to remove fields that occur more than once, if that is what you want.
Try the man pages!
I hope this is of help.
Without much detail I guess you would have to sort the names in the two files, then diff the two files and use the redirect (>
to write them to a single (3rd) file. ie diff file1 file2 > file3
Uniq would be used to remove fields that occur more than once, if that is what you want.
Try the man pages!
I hope this is of help.
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LEARN ABOUT NETBSD
login.access
LOGIN.ACCESS(5) BSD File Formats Manual LOGIN.ACCESS(5) NAME
login.access -- login access control table DESCRIPTION
The login.access file specifies (user, host) combinations and/or (user, tty) combinations for which a login will be either accepted or refused. When someone logs in, the login.access is scanned for the first entry that matches the (user, host) combination, or, in case of non-networked logins, the first entry that matches the (user, tty) combination. The permissions field of that table entry determines whether the login will be accepted or refused. Each line of the login access control table has three fields separated by a ':' character: permission:users:origins The first field should be a "+" (access granted) or "-" (access denied) character. The second field should be a list of one or more login names, group names, or ALL (always matches). The third field should be a list of one or more tty names (for non-networked logins), host names, domain names (begin with "."), host addresses, internet network numbers (end with "."), ALL (always matches) or LOCAL (matches any string that does not contain a "." character). If you run NIS you can use @netgroupname in host or user patterns. The EXCEPT operator makes it possible to write very compact rules. The group file is searched only when a name does not match that of the logged-in user. Only groups are matched in which users are explicitly listed: the program does not look at a user's primary group id value. FILES
/etc/login.access The login.access file resides in /etc. SEE ALSO
login(1), pam(8) AUTHORS
Guido van Rooij BSD
April 30, 1994 BSD