Home / server / Questions / 481019
Accepted
yael
Asked: 2013-02-22 02:07:31 +0800 CST

Replace two characters using one sed command

  • 772

I'm trying to remove the = and ] characters using one sed command:

# echo "A=[A]" | sed s'/[=\]]/ /g'
A=[A]

Something is wrong with this syntax?

I Expect the following results from sed

# echo "A=[A]" | ....sed 
A [A
linux

3 Answers

  1. You can use the '-e' flag to execute multiple substitutes, for example:

    # echo "A = [A]" | sed -e 's/=//' -e 's/]//'
A  [A

    It might be possible to match both '=' and ']' in a single substitute but even if it is, I don't think it'll provide much benefit over using '-e'.

    • 9
  2. Best Answer

    echo "A=[A]" | sed s'/[]=]/ /g'

    A [A

    • 6

  3. It's probably easier to use tr to do something like this as it doesn't involve messing with REs

    echo "A=[A]<-" | tr "]=" " "
A [A <-
    • 5