From patchwork Wed Sep 1 20:46:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Hemminger X-Patchwork-Id: 505456 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E31A3C432BE for ; Wed, 1 Sep 2021 20:47:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4F6B61053 for ; Wed, 1 Sep 2021 20:47:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234133AbhIAUsF (ORCPT ); Wed, 1 Sep 2021 16:48:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231735AbhIAUsE (ORCPT ); Wed, 1 Sep 2021 16:48:04 -0400 Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02BB8C061575 for ; Wed, 1 Sep 2021 13:47:07 -0700 (PDT) Received: by mail-pj1-x102a.google.com with SMTP id u11-20020a17090adb4b00b00181668a56d6so621169pjx.5 for ; Wed, 01 Sep 2021 13:47:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=SCHnJfUNurDt0jhBUdRhrGAXCjDumm2atE4LQxnOY1I=; b=hdg6pT0eC8J6wQxw1cuE+MCnMOm2HY1ZbrbY0vtMfR2g9osNvPrqrWzaDgoUX8M37R Ye/7pE9XMxAd/kXBOxvyUqRe3kQANrD24b0WI/h6O1UjmNIVr6v/iy56tozc/5+M84/m 40zgGq4FPb7HseHK2KVALnAA8yNnHMwrbZcgvNBco8pbZ0nLzgK7DPNXvswIegw2fOgx pqn6xuwZe3ZUvNTYkrj7BBYmCk+H71mISVDwJrbED6yGNXruOXpINAheRMje7WO2Sexe Tfr/U+oQD2GdcvrBqKqxMNn/mlN62hiJSSBzv3bVOMabKVbT5wNpHq72HmDayX/sLG/s M1ag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=SCHnJfUNurDt0jhBUdRhrGAXCjDumm2atE4LQxnOY1I=; b=ORvnj3zxGmplKFc/fYXxAtrznRKwLHQ053PRa+FZsFQT2mUROVfO+9hTX5b513n+oU 26ElFLYuBL6Y2cbl0ZlMpUCAkyJvr+1VPrb057j08TDQLogAwbXDdOexAzQ8R9rNh9m3 QJzGwEe2DK6Z5zgtBzKsnhPhnPbL7KlC/UrfcxYnUo8C1kl2EvTuyx7simQgCr3HXz5k t0jRLt2oyR1k/c+aqybqB0ucvc+yLKHF5ceLsHZQXDYMzxEqcvbQHGkFUbAlWuFMftuQ kfyZjVa0Z5KS/9KtdOhuL1PfdzC19QO/lzrXZW7iWP63sP/H1rp1AhbDlJ3NLpAzUiKF awDw== X-Gm-Message-State: AOAM533ihbawj8B7sLmxUcTYn6Kh20fi8xQrzDOEmndbee6rjg0vrJVE W72QeQrJdYhFRKc89RtWFrXX8Rw5sD/Lrg== X-Google-Smtp-Source: ABdhPJxj5eISC6B7Ty9DODIYtwh244k5X8epxVd1q3Mo4XP7p6j2esM9nGYyBfhRoPAvBXcfUl2+nw== X-Received: by 2002:a17:90a:448f:: with SMTP id t15mr1212023pjg.21.1630529225935; Wed, 01 Sep 2021 13:47:05 -0700 (PDT) Received: from hermes.local (204-195-33-123.wavecable.com. [204.195.33.123]) by smtp.gmail.com with ESMTPSA id g26sm565073pgb.45.2021.09.01.13.47.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Sep 2021 13:47:05 -0700 (PDT) From: Stephen Hemminger X-Google-Original-From: Stephen Hemminger To: netdev@vger.kernel.org Cc: Stephen Hemminger Subject: [PATCH iproute2-next 2/4] ip: remove ifcfg script Date: Wed, 1 Sep 2021 13:46:59 -0700 Message-Id: <20210901204701.19646-3-sthemmin@microsoft.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210901204701.19646-1-sthemmin@microsoft.com> References: <20210901204701.19646-1-sthemmin@microsoft.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Stephen Hemminger This script was from olden days of ifcfg. I don't see any distribution using it and it is time to put it out to pasture. Signed-off-by: Stephen Hemminger --- ip/Makefile | 2 +- ip/ifcfg | 150 ----------------------------------------------- man/man8/ifcfg.8 | 48 --------------- 3 files changed, 1 insertion(+), 199 deletions(-) delete mode 100755 ip/ifcfg delete mode 100644 man/man8/ifcfg.8 diff --git a/ip/Makefile b/ip/Makefile index a3b4249e7e06..e27dfa097877 100644 --- a/ip/Makefile +++ b/ip/Makefile @@ -18,7 +18,7 @@ RTMONOBJ=rtmon.o include ../config.mk ALLOBJ=$(IPOBJ) $(RTMONOBJ) -SCRIPTS=ifcfg routel routef +SCRIPTS=routel routef TARGETS=ip rtmon all: $(TARGETS) $(SCRIPTS) diff --git a/ip/ifcfg b/ip/ifcfg deleted file mode 100755 index 5b34decd4480..000000000000 --- a/ip/ifcfg +++ /dev/null @@ -1,150 +0,0 @@ -#! /bin/sh -# SPDX-License-Identifier: GPL-2.0 - -CheckForwarding () { - local sbase fwd - sbase=/proc/sys/net/ipv4/conf - fwd=0 - if [ -d $sbase ]; then - for dir in $sbase/*/forwarding; do - fwd=$(( fwd + $(cat "$dir") )) - done - else - fwd=2 - fi - return $fwd -} - -RestartRDISC () { - killall -HUP rdisc || rdisc -fs -} - -ABCMaskLen () { - local class; - - class=${1%%.*} - if [ "$1" = "" -o $class -eq 0 -o $class -ge 224 ]; then return 0 - elif [ $class -ge 224 ]; then return 0 - elif [ $class -ge 192 ]; then return 24 - elif [ $class -ge 128 ]; then return 16 - else return 8; fi -} - -label="label $1" -ldev="$1" -dev=${1%:*} -if [ "$dev" = "" -o "$1" = "help" ]; then - echo "Usage: ifcfg DEV [[add|del [ADDR[/LEN]] [PEER] | stop]" 1>&2 - echo " add - add new address" 1>&2 - echo " del - delete address" 1>&2 - echo " stop - completely disable IP" 1>&2 - exit 1 -fi -shift - -CheckForwarding -fwd=$? -if [ $fwd -ne 0 ]; then - echo "Forwarding is ON or its state is unknown ($fwd). OK, No RDISC." 1>&2 -fi - - -deleting=0 -case "$1" in -add) shift ;; -stop) - if [ "$ldev" != "$dev" ]; then - echo "Cannot stop alias $ldev" 1>&2 - exit 1; - fi - ip -4 addr flush dev $dev $label || exit 1 - if [ $fwd -eq 0 ]; then RestartRDISC; fi - exit 0 ;; -del*) - deleting=1; shift ;; -*) -esac - -ipaddr= -pfxlen= -if [ "$1" != "" ]; then - ipaddr=${1%/*} - if [ "$1" != "$ipaddr" ]; then - pfxlen=${1#*/} - fi - if [ "$ipaddr" = "" ]; then - echo "$1 is bad IP address." 1>&2 - exit 1 - fi -fi -shift - -peer=$1 -if [ "$peer" != "" ]; then - if [ "$pfxlen" != "" -a "$pfxlen" != "32" ]; then - echo "Peer address with non-trivial netmask." 1>&2 - exit 1 - fi - pfx="$ipaddr peer $peer" -else - if [ "$ipaddr" = "" ]; then - echo "Missing IP address argument." 1>&2 - exit 1 - fi - if [ "$pfxlen" = "" ]; then - ABCMaskLen $ipaddr - pfxlen=$? - fi - pfx="$ipaddr/$pfxlen" -fi - -if [ "$ldev" = "$dev" -a "$ipaddr" != "" ]; then - label= -fi - -if [ $deleting -ne 0 ]; then - ip addr del $pfx dev $dev $label || exit 1 - if [ $fwd -eq 0 ]; then RestartRDISC; fi - exit 0 -fi - - -if ! ip link set up dev $dev ; then - echo "Error: cannot enable interface $dev." 1>&2 - exit 1 -fi -if [ "$ipaddr" = "" ]; then exit 0; fi - -if ! arping -q -c 2 -w 3 -D -I $dev $ipaddr ; then - echo "Error: some host already uses address $ipaddr on $dev." 1>&2 - exit 1 -fi - -if ! ip address add $pfx brd + dev $dev $label; then - echo "Error: failed to add $pfx on $dev." 1>&2 - exit 1 -fi - -arping -q -A -c 1 -I $dev $ipaddr -noarp=$? -( sleep 2 ; - arping -q -U -c 1 -I $dev $ipaddr ) >/dev/null 2>&1 /dev/null 2>&1 -ip route add unreachable 255.255.255.255 >/dev/null 2>&1 -if [ "`ip link ls $dev | grep -c MULTICAST`" -ge 1 ]; then - ip route add 224.0.0.0/4 dev $dev scope global >/dev/null 2>&1 -fi - -if [ $fwd -eq 0 ]; then - if [ $noarp -eq 0 ]; then - ip ro append default dev $dev metric 30000 scope global - elif [ "$peer" != "" ]; then - if ping -q -c 2 -w 4 $peer ; then - ip ro append default via $peer dev $dev metric 30001 - fi - fi - RestartRDISC -fi - -exit 0 diff --git a/man/man8/ifcfg.8 b/man/man8/ifcfg.8 deleted file mode 100644 index 1a3786c1b0d9..000000000000 --- a/man/man8/ifcfg.8 +++ /dev/null @@ -1,48 +0,0 @@ -.TH IFCFG 8 "September 24 2009" "iproute2" "Linux" -.SH NAME -ifcfg \- simplistic script which replaces ifconfig IP management -.SH SYNOPSIS -.ad l -.in +8 -.ti -8 -.B ifcfg -.RI "[ " DEVICE " ] [ " command " ] " ADDRESS " [ " PEER " ] " -.sp - -.SH DESCRIPTION -This manual page documents briefly the -.B ifcfg -command. -.PP -This is a simplistic script replacing one option of -.B ifconfig -, namely, IP address management. It not only adds -addresses, but also carries out Duplicate Address Detection RFC-DHCP, -sends unsolicited ARP to update the caches of other hosts sharing -the interface, adds some control routes and restarts Router Discovery -when it is necessary. - -.SH IFCONFIG - COMMAND SYNTAX - -.SS -.TP -.B DEVICE -- it may have alias, suffix, separated by colon. - -.TP -.B command -- add, delete or stop. - -.TP -.B ADDRESS -- optionally followed by prefix length. - -.TP -.B peer -- optional peer address for pointpoint interfaces. - -.SH NOTES -This script is not suitable for use with IPv6. - -.SH SEE ALSO -.RB "IP Command reference " ip-cref.ps From patchwork Wed Sep 1 20:47:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Hemminger X-Patchwork-Id: 505455 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E93D3C432BE for ; Wed, 1 Sep 2021 20:47:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB129610A2 for ; Wed, 1 Sep 2021 20:47:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239018AbhIAUsN (ORCPT ); Wed, 1 Sep 2021 16:48:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33286 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233327AbhIAUsI (ORCPT ); Wed, 1 Sep 2021 16:48:08 -0400 Received: from mail-pg1-x535.google.com (mail-pg1-x535.google.com [IPv6:2607:f8b0:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4473DC061575 for ; Wed, 1 Sep 2021 13:47:09 -0700 (PDT) Received: by mail-pg1-x535.google.com with SMTP id 8so724705pga.7 for ; Wed, 01 Sep 2021 13:47:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=FubUooDS2WKMSYk2DOHk3EgWqp53DYzfL986g15sWe4=; b=G25M0gwUD74aqihsxJCooO/Id/T+ZQ79GNmWjRK2WZjTFAEmoYVEt81Ubv+GATYUnl pZB0nlmY6NEP7tzQANsVcERDn4o2dBnXzAdM1NUL0EEJLi7udT11hJ/nwks+IdT5LoK7 sqmgyvJQPSTUO9lbMzX2j4l8nOV1HQKKC7U3m1yN3Tx3upcZokMJklZxWEtSt9nnLgNL aaqCwyIF3k1owPVrWW+q5/uYC5A9qryezAom+uYAQhZsYxdcaPT2IMzWqX73OOHKXdm8 tAKf9NyZ3rzyPMkHfnfgYX4Y7ok74jtPip8Gqm3pVCWO8Fg4VtcUr7zKyTSnp/3IT7n1 DfOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=FubUooDS2WKMSYk2DOHk3EgWqp53DYzfL986g15sWe4=; b=EjLx6DS2UA9oSvNhrxTQq2bbv0gB0nAjPm4CanlrnVYSWaBMAwgCpqKXscBc+8msq8 F+MuuPTDOi/u2nx74G+0a3XyFky42G5dlWX8ipnuYNCb+U+U56E6zgdo5Ry6ydFzEQuD N/YU59u/x7BhLJeoLkn5JyrgfeRIXdXvb+L6X6q7WO8Q8WysGruCJlub+kOfv/eqlQzo uFrLRy+xcm7TbsXCHlNVDUwnNoeEE/Orjw1x1sJluKSRIKucHpayh5DeB1rRk4+tNLiZ qHnDbQvjsdLX1Ue0hsMVKYMh4c+4+hJzn07OUY0bZ9cfyP6Qkxni/cNwPHCAOqqqSPn1 OFTw== X-Gm-Message-State: AOAM532JHoPFJBgAXiZPl+HQ4ja2sFS3nmWaRC7VrdOE/9is2ZiybbTc BD+SSdF5IUEW8hE7ABMIH9gF+A/+2XtVbw== X-Google-Smtp-Source: ABdhPJxm5XH/JYseoOdaSfSKFZeana8XTW5b4KHzfwIMjPtf0arhEAeDTLupj+fL2azoAAXllYaD0A== X-Received: by 2002:a65:47c6:: with SMTP id f6mr876471pgs.450.1630529228306; Wed, 01 Sep 2021 13:47:08 -0700 (PDT) Received: from hermes.local (204-195-33-123.wavecable.com. [204.195.33.123]) by smtp.gmail.com with ESMTPSA id g26sm565073pgb.45.2021.09.01.13.47.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Sep 2021 13:47:07 -0700 (PDT) From: Stephen Hemminger X-Google-Original-From: Stephen Hemminger To: netdev@vger.kernel.org Cc: Stephen Hemminger Subject: [PATCH iproute2-next 4/4] ip: rewrite routel in python Date: Wed, 1 Sep 2021 13:47:01 -0700 Message-Id: <20210901204701.19646-5-sthemmin@microsoft.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210901204701.19646-1-sthemmin@microsoft.com> References: <20210901204701.19646-1-sthemmin@microsoft.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Stephen Hemminger Not sure if anyone uses the routel script. The script was a combination of ip route, shell and awk doing command scraping. It is now possible to do this much better using the JSON output formats and python. Rewriting also fixes the bug where the old script could not parse the current output format. At the end was getting: /usr/bin/routel: 48: shift: can't shift that many The new script also has IPv6 as option. Signed-off-by: Stephen Hemminger --- ip/routel | 124 +++++++++++++++++++++------------------------- man/man8/routel.8 | 30 ++++++++--- 2 files changed, 79 insertions(+), 75 deletions(-) diff --git a/ip/routel b/ip/routel index 7056886d0f94..09a901267fb3 100755 --- a/ip/routel +++ b/ip/routel @@ -1,72 +1,62 @@ -#!/bin/sh +#! /usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 - -# -# Script created by: Stephen R. van den Berg , 1999/04/18 -# Donated to the public domain. -# -# This script transforms the output of "ip" into more readable text. -# "ip" is the Linux-advanced-routing configuration tool part of the -# iproute package. # +# This is simple script to process JSON output from ip route +# command and format it. Based on earlier shell script version. +"""Script to parse ip route output into more readable text.""" + +import sys +import json +import getopt +import subprocess + + +def usage(): + '''Print usage and exit''' + print("Usage: {} [tablenr [raw ip args...]]".format(sys.argv[0])) + sys.exit(64) + + +def main(): + '''Process the arguments''' + family = 'inet' + try: + opts, args = getopt.getopt(sys.argv[1:], "h46f:", ["help", "family="]) + except getopt.GetoptError as err: + print(err) + usage() + + for opt, arg in opts: + if opt in ["-h", "--help"]: + usage() + elif opt == '-6': + family = 'inet6' + elif opt == "-4": + family = 'inet' + elif opt in ["-f", "--family"]: + family = arg + else: + assert False, "unhandled option" + + if not args: + args = ['0'] + + cmd = ['ip', '-f', family, '-j', 'route', 'list', 'table'] + args + process = subprocess.Popen(cmd, stdout=subprocess.PIPE) + tbl = json.load(process.stdout) + if family == 'inet': + fmt = '{:15} {:15} {:15} {:8} {:8}{:<16} {}' + else: + fmt = '{:32} {:32} {:32} {:8} {:8}{:<16} {}' + + # ip route json keys + keys = ['dst', 'gateway', 'prefsrc', 'protocol', 'scope', 'dev', 'table'] + print(fmt.format(*map(lambda x: x.capitalize(), keys))) -test "X-h" = "X$1" && echo "Usage: $0 [tablenr [raw ip args...]]" && exit 64 + for record in tbl: + fields = [record[k] if k in record else '' for k in keys] + print(fmt.format(*fields)) -test -z "$*" && set 0 -ip route list table "$@" | - while read network rest - do set xx $rest - shift - proto="" - via="" - dev="" - scope="" - src="" - table="" - case $network in - broadcast|local|unreachable) via=$network - network=$1 - shift - ;; - esac - while test $# != 0 - do - case "$1" in - proto|via|dev|scope|src|table) - key=$1 - val=$2 - eval "$key='$val'" - shift 2 - ;; - dead|onlink|pervasive|offload|notify|linkdown|unresolved) - shift - ;; - *) - # avoid infinite loop on unknown keyword without value at line end - shift - shift - ;; - esac - done - echo "$network $via $src $proto $scope $dev $table" - done | awk -F ' ' ' -BEGIN { - format="%15s%-3s %15s %15s %8s %8s%7s %s\n"; - printf(format,"target","","gateway","source","proto","scope","dev","tbl"); - } - { network=$1; - mask=""; - if(match(network,"/")) - { mask=" "substr(network,RSTART+1); - network=substr(network,0,RSTART); - } - via=$2; - src=$3; - proto=$4; - scope=$5; - dev=$6; - table=$7; - printf(format,network,mask,via,src,proto,scope,dev,table); - } -' +if __name__ == "__main__": + main() diff --git a/man/man8/routel.8 b/man/man8/routel.8 index b32eeafcf69d..b1668e73615a 100644 --- a/man/man8/routel.8 +++ b/man/man8/routel.8 @@ -1,17 +1,31 @@ -.TH "ROUTEL" "8" "3 Jan, 2008" "iproute2" "Linux" +.TH ROUTEL 8 "1 Sept, 2021" "iproute2" "Linux" .SH "NAME" -.LP routel \- list routes with pretty output format -.SH "SYNTAX" -.LP -routel [\fItablenr\fP [\fIraw ip args...\fP]] +.SH SYNOPSIS +.B routel +.RI "[ " OPTIONS " ]" +.RI "[ " tablenr +[ \fIip route options...\fR ] ] +.P +.ti 8 +.IR OPTIONS " := {" +\fB-h\fR | \fB--help\fR | +[{\fB-f\fR | \fB--family\fR } +{\fBinet\fR | \fBinet6\fR } | +\fB-4\fR | \fB-6\fR } + .SH "DESCRIPTION" .LP -The routel script will list routes in a format that some might consider easier to interpret -then the ip route list equivalent. +The routel script will list routes in a format that some might consider +easier to interpret then the +.B ip +route list equivalent. + .SH "AUTHORS" .LP -The routel script was written by Stephen R. van den Berg , 1999/04/18 and donated to the public domain. +Rewritten by Stephen Hemminger . +.br +Original script by Stephen R. van den Berg . .br This manual page was written by Andreas Henriksson , for the Debian GNU/Linux system. .SH "SEE ALSO"