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Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2017:1873
Description of problem: exit code on wrong parameter is zero Version-Release number of selected component (if applicable): net-tools-2.0-0.18.20131004git.el7.x86_64 How reproducible: always Steps to Reproduce: 1. zero exit code for wrong usage: [0 root@qeos-196 ~]# nameif aaaa usage: nameif [-c configurationfile] [-s] {ifname macaddress} [0 root@qeos-196 ~]# echo $? 0 2. there are more tools returning ZERO, I tried bin wrongoption bin --wrongoption ############## BUG /bin/netstat wrongoption usage: netstat [-vWeenNcCF] [<Af>] -r netstat {-V|--version|-h|--help} netstat [-vWnNcaeol] [<Socket> ...] .......snip........ netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP) x25 (CCITT X.25) ############## BUG /sbin/arp --wrongoption /sbin/arp: unrecognized option '--wrongoption' Usage: .......snip........ irda (IrLAP) x25 (generic X.25) infiniband (InfiniBand) eui64 (Generic EUI-64) ############## BUG /sbin/ipmaddr wrongoption Usage: ipmaddr [ add | del ] MULTIADDR dev STRING ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ] .......snip........ ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ] ipmaddr -V | -version ############## BUG /sbin/ipmaddr --wrongoption Usage: ipmaddr [ add | del ] MULTIADDR dev STRING ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ] .......snip........ ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ] ipmaddr -V | -version ############## BUG /sbin/iptunnel wrongoption Usage: iptunnel { add | change | del | show } [ NAME ] [ mode { ipip | gre | sit } ] [ remote ADDR ] [ local ADDR ] .......snip........ TTL := { 1..255 | inherit } KEY := { DOTTED_QUAD | NUMBER } ############## BUG /sbin/iptunnel --wrongoption Usage: iptunnel { add | change | del | show } [ NAME ] [ mode { ipip | gre | sit } ] [ remote ADDR ] [ local ADDR ] .......snip........ TTL := { 1..255 | inherit } KEY := { DOTTED_QUAD | NUMBER } ############## BUG /sbin/nameif wrongoption usage: nameif [-c configurationfile] [-s] {ifname macaddress} .......snip........ usage: nameif [-c configurationfile] [-s] {ifname macaddress} ############## BUG /sbin/nameif --wrongoption /sbin/nameif: unrecognized option '--wrongoption' usage: nameif [-c configurationfile] [-s] {ifname macaddress} .......snip........ /sbin/nameif: unrecognized option '--wrongoption' usage: nameif [-c configurationfile] [-s] {ifname macaddress} ############## BUG /sbin/plipconfig --wrongoption Usage: plipconfig interface [nibble NN] [trigger NN] plipconfig -V | --version .......snip........ plipconfig -V | --version plipconfig -h | --help ############## BUG /sbin/route wrongoption Usage: route [-nNvee] [-FC] [<AF>] List kernel routing tables route [-v] [-FC] {add|del|flush} ... Modify routing table for AF. .......snip........ netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP) x25 (CCITT X.25) ############## BUG /sbin/route --wrongoption /sbin/route: unrecognized option '--wrongoption' Usage: route [-nNvee] [-FC] [<AF>] List kernel routing tables .......snip........ netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP) x25 (CCITT X.25) ############## BUG /sbin/slattach --wrongoption Usage: slattach [-ehlLmnqv] [-k keepalive] [-o outfill] [-c cmd] [-s speed] [-p protocol] tty | - slattach -V | --version .......snip........ Usage: slattach [-ehlLmnqv] [-k keepalive] [-o outfill] [-c cmd] [-s speed] [-p protocol] tty | - slattach -V | --version Actual results: return code is zero Expected results: return code shouldn't be zero Additional info: see bug 1257549 ----------- TEST: [0 root@qeos-196 ~]# cat /tmp/test.sh #!/bin/bash log=$(mktemp) for bin in $(rpm -ql net-tools | grep bin);do for option in wrongoption --wrongoption;do $bin $option &> $log if [ $? -eq 0 ];then echo '############## BUG' echo "$bin $option" head -n2 $log echo '.......snip........' tail -n2 $log fi done done