FreeBSD src
21a392ac13
with the previous implementation. One noticeable difference is the order
in which messages are printed. In the previous implementation, the
command "lpc topq lp 1 20 300" might print:
lp:
moved cfA300some.host.org
moved cfA020some.host.org
moved cfA001some.host.org
while in the new implementation you'll see:
lp:
moved cfA001some.host.org
moved cfA020some.host.org
moved cfA300some.host.org
The final order of jobs in the queue is exactly the same, it's just
that the jobs are now moved in the same order they were specified,
instead of being moved (and thus listed) in the reverse order.
The new implementation also supports more options for how to select
which jobs should be moved. The previous topq allowed the user to
select jobs based on a job number, or based on a userid:
topq lp 17
topq lp drosehn
The new one also allows for a range of job numbers, or a hostname
(matching jobs that were sent from that hostname). To specify a
hostname, you must prefix it with an '@'-sign:
topq lp 17
topq lp 15-25
topq lp drosehn
topq lp @some.host.com
or a combination of those things:
topq lp drosehn:17
topq lp 15-25:drosehn
topq lp 15-25@some.host.edu
topq lp gad:15-25@some.host.edu
Futhermore, in the new implementation the user can also use
filename-style pattern-matching on the userid or hostname fields:
topq lp dros[ie]hn
topq lp @samba*
topq lp gad@*freebsd.org
(although the user should probably include those in quotes when they
are specifying the topq command as part of the 'lpc' command, just
to make sure the pattern-matching characters are not expanded by
whatever shell they are typing the command into)
The operator can still specify several of these job-specifiers in a
single command:
topq lp 17 22 27 drosihn:23 gad@*freebsd.org 97
If a job is matched by multiple job-specifiers on a single command,
then its final position in the queue is based on the first job-specifer
which matched it.
The previous implementation also recognized a jobnumber followed by
a hostname (with no separator), or a hostname:jobnumber, although
neither of these options were documented. Eg:
topq lp 42some.host.org
topq lp some.host.org:42
The new version allows the first one, and will also recognize the
second one *iff* the hostname includes a period (otherwise it is
assumed to be a userid followed by a job number). Both remain
undocumented, and are only provided in case there were some users
who did know about those options, and are used to typing them in.
The new implementation also fixes a few subtle security issues in
the old one (mainly just making sure all error-messages are printed
while the process is "not-priv"), avoids integer-overflow issues on
bad user input, and prints out more descriptive messages in a number
of circumstances.
The new bottomq command accepts all the same arguments as topq, but
moves the selected jobs to the bottom of the queue instead of the top.
|
||
|---|---|---|
| bin | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| kerberosIV | ||
| lib | ||
| libexec | ||
| release | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.upgrade | ||
| README | ||
| UPDATING | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.FreeBSD.org/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. kerberosIV KerberosIV (eBones) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.FreeBSD.org/handbook/synching.html