column: create columns from text input
    tr: translate/substitute/delete input
    join: like a database join but for text
    comm: file comparison like a db join
    paste: put lines in a file next to each other
    rs: reshape arrays
    jot: generate data
    expand: replace spaces and/or tabs
    time: track how long a task takes to run
    watch: execute something on a schedule in realtime
    xargs: execute something on all inputs
    iftop: visually show network traffic
    htop: show system stats more powerfully
    xxd: manipulate files in hex
    mtr: powerful traceroute replacement
    mdfind: osx find replacement that uses spotlight
    brew: osx package manager
    df: disk usage
    du: disk usage
    dig: dns queries
    host: dns queries
    man ascii: lookup your ascii
    sshfs: mount a directory through ssh
    wget: get w’s
    tmux: a better screen
    pushd: push your pwd to a stack
    popd: pop pwd off your stack
    lsof: godlike
    ncat: use this instead of nc
    fuser: kills locking processes
    vim: attack yourself
    tac: cat in reverse
    rename: change spaces to underscores in names
    open .: in osx, open finder in the current dir
    lsmod: show kernel modules
    printf: change the format of output
    timeout: execute something and kill it soon after
    disown: protect a job from disconnect
    fc: edit your last command in your editor and execute it
    sudo !!: repeat last command with sudo
    tee: send output to stdout as well
    pgrep: greps through processes
    pkill: kills processes based on search
    fmt: text formatter
    bc: an interactive calculator language
    apropos: info on commands
    strace: the uber debug tool
    man units: interesting
    pstree: shows processes in a…well…tree
    ddate: wtf
    zgrep: grep within compressed files
    zless: look at compressed files
    readlink: read values of links
    atop: another top
    split: break a file into pieces
    dd: disk writing
    ndiff: show differences in mmap scans
    ss: show apps using the internet