Simplest method to convert file-size with suffix to bytes

Question

Title says it all really, but I\'m currently using a simple function with a case statement to convert human-readable file size strings into a size in bytes. It works well en

Answer 1

toBytes() {
 echo $1 | echo $((`sed 's/.*/\L\0/;s/t/Xg/;s/g/Xm/;s/m/Xk/;s/k/X/;s/b//;s/X/ *1024/g'`))
}