Binary to decimal
#! /bin/bash D2B=({0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}) echo $((10#${D2B[$1]}))
Perform a calculation in non-interactive mode:
calc -p '(145*5)'
Flac to MP3
Batch convert your flac files to mp3:
for i in *.flac; do ffmpeg -i "$i" "${i%%.*}.mp3" ; done
Paste