Using sed to replace '½' with '.5'

Question

如何使用 sed 将½替换为.5 ？

Answer 1

Your terminal needs to support Unicode then this works:

x='sed to replace "½"'
echo "$x"| sed 's/½/.5/'
sed to replace ".5"

To substitute this in in-line in a file:

sed -i.bak 's/½/.5/' file

Answer 2

:) you have to use an escape character to be able to parse 1/2 on command-line like this.

echo "anyrandom text 1/2 asdf 1/2" | sed 's/1/2/0.5/g'

/g at the end make it replace all the occurrences of the pattern.

if you want to run it on a file: sed 's/1\\2/0.5/g' filename