Remove crap from bash history 1sed -i -r '/([^ ]{100,})\s?$/d' $HISTFILE Convert a csv file to markdown 1column -o '|' -ts, "$1" + | sed -r '0,/./p ; 0,/./s/[a-zA-Z ]/-/g; 0,/^|/s/|-/|:/g' Change a CSV header 1from=number 2to=quantity 3sed -i "1 s///" "".csv Replace first instance of word 1sed …

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