Ifconfig: Command Not Found

Question

I ssh into a remote machine with root which is installed with Fedora 18. I typed in

ifconfig

but I got

ifconfig: command not found

and also

     [root@kitch proxy]# /sbin/ifconfig
     -bash: /sbin/ifconfig: No such file or directory
    [root@kitch proxy]# sudo yum provides ifconfig
    fedora/filelists_db                                                                                                          |  25 MB  00:00:04
    updates/filelists_db                                                                                                         |  12 MB  00:00:02
    net-tools-2.0-0.2.20121106git.fc18.x86_64 : Basic networking tools
    Repo        : fedora
    Matched from:
    Filename    : /sbin/ifconfig

then I typed in ip link show

        [root@kitch proxy]# ip link show
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT qlen 1000
        link/ether 00:1a:a0:23:86:6c brd ff:ff:ff:ff:ff:ff

and ip addr show

    t@kitch proxy]# ip addr show
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
        inet 127.0.0.1/8 scope host lo
        inet6 ::1/128 scope host
           valid_lft forever preferred_lft forever
    2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
        link/ether 00:1a:a0:23:86:6c brd ff:ff:ff:ff:ff:ff
        inet 138.96.116.9/21 brd 138.96.119.255 scope global em1
        inet6 fe80::21a:a0ff:fe23:866c/64 scope link
           valid_lft forever preferred_lft forever

and

    [root@kitch proxy]# /sbin/iptables
    iptables v1.4.16.2: no command specified
    Try `iptables -h' or 'iptables --help' for more information.

there is no eth0 and the results are strange to me. Can anyone explain a bit?

Accepted Answer

Both Fedora and RedHat identify NICs that are embedded on the motherboard by emN instead of ethN.

EDIT: If you want to prevent uvdev from renaming eth0 to em1 check this:

Answer 2

ifconfig on Red Hat-esque boxes often lives in /sbin, which often isn't in the default path; try /sbin/ifconfig and see what you get.

The manual page for ip is a good place to start finding out about its options, behavior, output, &c.

Answer 3

By default, ifconfig wont be there in RHEL.

sudo yum install net-tools

will instal ifconfig in /usr/sbin/ifconfig

Ifconfig: Command Not Found

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3 Answers

David Miller