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    Copyright
    Preface
    Ch. 1. Introduction
    Ch. 2. System and Network Administration Overview
    Ch. 3. Linux Commands
    Alphabetical Summary of Commands
    accept
    access
    aclocal
    aconnect
    acpi
    acpi_available
    acpid
    addr2line
    addresses
    agetty
    alsactl
    amidi
    amixer
    anacron
    aplay
    aplaymidi
    apm
    apmd
    apropos
    apt
    ar
    arch
    arecord
    arecordmidi
    arp
    as
    at
    atd
    atq
    atrm
    audiosend
    aumix
    autoconf
    autoheader
    automake
    autoreconf
    autoscan
    autoupdate
    badblocks
    banner
    basename
    bash
    batch
    bc
    biff
    bison
    bzcmp
    bzdiff
    bzgrep
    bzip2
    bzless
    bzmore
    c++
    c++filt
    cal
    cardctl
    cardmgr
    cat
    cc
    cdda2wav
    cdparanoia
    cdrdao
    cdrecord
    cfdisk
    chage
    chattr
    chfn
    chgrp
    chkconfig
    chmod
    chown
    chpasswd
    chroot
    chrt
    chsh
    chvt
    cksum
    clear
    cmp
    col
    colcrt
    colrm
    column
    comm
    compress
    cp
    cpio
    cpp
    crond
    crontab
    csplit
    ctags
    cupsd
    cut
    cvs
    date
    dd
    deallocvt
    debugfs
    depmod
    devdump
    df
    diff
    diff3
    dig
    dir
    dircolors
    dirname
    disable
    dlpsh
    dmesg
    dnsdomainname
    dnssec-keygen
    dnssec-makekeyset
    dnssec-signkey
    dnssec-signzone
    doexec
    domainname
    dosfsck
    du
    dump
    dumpe2fs
    dumpkeys
    e2fsck
    e2image
    e2label
    echo
    edquota
    egrep
    eject
    elvtune
    emacs
    enable
    env
    envsubst
    esd
    esd-config
    esdcat
    esdctl
    esddsp
    esdmon
    esdplay
    esdrec
    esdsample
    etags
    ex
    expand
    expr
    factor
    false
    fc-cache
    fc-list
    fdformat
    fdisk
    fetchmail
    fgconsole
    fgrep
    file
    find
    finger
    fingerd
    flex
    fmt
    fold
    formail
    free
    fsck
    ftp
    ftpd
    fuser
    g++
    gawk
    gcc
    gdb
    getent
    getkeycodes
    gpasswd
    gpg
    gpgsplit
    gpgv
    gpm
    gprof
    grep
    groff
    groffer
    groupadd
    groupdel
    groupmod
    groups
    grpck
    grpconv
    gs
    gunzip
    gzexe
    gzip
    halt
    hdparm
    head
    hexdump
    host
    hostid
    hostname
    htdigest
    hwclock
    iconv
    id
    ifconfig
    imapd
    inetd
    info
    init
    insmod
    install
    ipcrm
    ipcs
    iptables
    iptables-restore
    iptables-save
    isodump
    isoinfo
    isosize
    isovfy
    ispell
    join
    kbd_mode
    kbdrate
    kernelversion
    kill
    killall
    killall5
    klogd
    kudzu
    last
    lastb
    lastlog
    ld
    ldconfig
    ldd
    less
    lesskey
    lftp
    lftpget
    link
    ln
    loadkeys
    locale
    locate
    lockfile
    logger
    login
    logname
    logrotate
    look
    losetup
    lpadmin
    lpinfo
    lpmove
    lpq
    lpr
    lprm
    lpstat
    ls
    lsattr
    lspci
    lsmod
    lsusb
    m4
    mail
    mailq
    mailstats
    mailto
    make
    makedbm
    makemap
    man
    manpath
    mattrib
    mbadblocks
    mcat
    mcd
    mcopy
    md5sum
    mdel, mdeltree
    mdir
    mdu
    merge
    mesg
    metamail
    metasend
    mformat
    mimencode
    minfo
    mkdir
    mkdosfs
    mke2fs
    mkfifo
    mkfs
    mkfs.ext3
    mkisofs
    mklost+found
    mkmanifest
    mknod
    mkraid
    mkswap
    mktemp
    mlabel
    mmd
    mmount
    mmove
    modinfo
    modprobe
    more
    mount
    mountd
    mpartition
    mpg123
    mpg321
    mrd
    mren
    mshowfat
    mt
    mtools
    mtoolstest
    mtype
    mv
    mzip
    named
    namei
    nameif
    netstat
    newaliases
    newgrp
    newusers
    nfsd
    nfsstat
    nice
    nm
    nohup
    nslookup
    nsupdate
    objcopy
    objdump
    od
    openvt
    passwd
    paste
    patch
    pathchk
    perl
    pidof
    ping
    pinky
    pmap
    portmap
    poweroff
    pppd
    pr
    praliases
    printenv
    printf
    ps
    ptx
    pwck
    pwconv
    pwd
    python
    quota
    quotacheck
    quotaon
    quotaoff
    quotastats
    raidstart
    ramsize
    ranlib
    rarpd
    rcp
    rdate
    rdev
    rdist
    rdistd
    readcd
    readelf
    readlink
    reboot
    reject
    rename
    renice
    repquota
    reset
    resize2fs
    restore
    rev
    rexec
    rexecd
    richtext
    rlogin
    rlogind
    rm
    rmail
    rmdir
    rmmod
    rndc
    rootflags
    route
    routed
    rpcgen
    rpcinfo
    rpm
    rsh
    rshd
    rsync
    runlevel
    rup
    ruptime
    rusers
    rusersd
    rwall
    rwho
    rwhod
    sane-find-scanner
    scanadf
    scanimage
    scp
    screen
    script
    sdiff
    sed
    sendmail
    sensors
    seq
    setfdprm
    setkeycodes
    setleds
    setmetamode
    setquota
    setsid
    setterm
    sftp
    sh
    sha1sum
    showkey
    showmount
    shred
    shutdown
    size
    skill
    slabtop
    slattach
    sleep
    slocate
    snice
    sort
    split
    ssh
    ssh-add
    ssh-agent
    ssh-keygen
    ssh-keyscan
    sshd
    stat
    statd
    strace
    strfile
    strings
    strip
    stty
    su
    sudo
    sum
    swapoff
    swapon
    sync
    sysctl
    sysklogd
    syslogd
    tac
    tail
    tailf
    talk
    talkd
    tar
    taskset
    tcpd
    tcpdump
    tcpslice
    tee
    telinit
    telnet
    telnetd
    test
    tftp
    tftpd
    time
    tload
    tmpwatch
    top
    touch
    tr
    tracepath
    traceroute
    troff
    true
    tset
    tsort
    tty
    tune2fs
    tunelp
    ul
    umount
    uname
    uncompress
    unexpand
    unicode_start
    unicode_stop
    uniq
    uptime
    useradd
    userdel
    usermod
    users
    usleep
    uudecode
    uuencode
    uuidgen
    vdir
    vi
    vidmode
    vim
    vmstat
    volname
    w
    wall
    warnquota
    watch
    wc
    wget
    whatis
    whereis
    which
    who
    whoami
    whois
    write
    xargs
    xinetd
    yacc
    yes
    ypbind
    ypcat
    ypinit
    ypmatch
    yppasswd
    yppasswdd
    yppoll
    yppush
    ypserv
    ypset
    yptest
    ypwhich
    ypxfr
    zcat
    zcmp
    zdiff
    zdump
    zforce
    zgrep
    zic
    zless
    zmore
    znew
    Ch. 4. Boot Methods
    Ch. 5. Package Management
    Ch. 6. The Bash Shell and Korn Shell
    Ch. 7. Pattern Matching
    Ch. 8. The Emacs Editor
    Ch. 9. The vi, ex, and vim Editors
    Ch. 10. The sed Editor
    Ch. 11. The gawk Programming Language
    Ch. 12. Source Code Management: An Overview
    Ch. 13. The Concurrent Versions System (CVS)
    Ch. 14. The Subversion Version Control System
    Colophon
    Index
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    ruptime
    ruptime [options]

    TCP/IP command. Provide information on how long each machine on the local network has been up and which users are logged into each. If a machine has not reported in for 11 minutes, assume it is down. The listing is sorted by hostname. ruptime depends on rwhod.


      

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