• Ed: The Standard Editor

    4 min read · writing guide sed vim

    Understanding ed will let you understand all that feels strange about the system. It set the standards for sed and vi. ed was designed for real terminals, i.e. a typewriter. You would type a command to the computer, and it would type out any errors. It would not waste paper, ink, and time by typing out COMMAND RUN …


    Read More

  • Rundown: sed

    1 min read · csv substitute replace tip shell maintenance recfiles database text sed

    Change a CSV header from=number to=quantity sed -i "1 s///" "".csv Remove crap from bash history 1sed -i -r '/([^ ]{100,})\s?$/d' $HISTFILE Combine many recfiles of different types into one 1sed '1i\ ' *.rec > all.rec Combine many recfiles of the same type into one 1recinf -d -t ${type} ${one}.rec > ${all}.rec 2sed …


    Read More