Why doesn't `\d` work in regular expressions in sed? [duplicate]
I am trying to use \d in regex in sed but it doesn't work:
sed -re 's/\d+//g'
But this is working:
sed -re 's/[0-9]+//g'
\d is a switch not a regular expression macro. If you want to use some predefined "constant" instead of [0-9] expression just try run this code:
s/[[:digit:]]+//g
There is no such special character group in sed. You will have to use [0-9].
In GNU sed, \d introduces a decimal character code of one to three digits in the range 0-255.
As indicated in this comment.