Write an equivalent GNU/Linux command

Question

How can I write an equivalent GNU/Linux command which gives the same output as the script? The input to the command should be the same as the variable var1 in the following script.

#!/bin/python
my_char = { 'a':'b', 'b':'c', 'c':'d'}
var1 = "abc"
var2 = ""
for ch in var1:
   if ch in my_char:
     var2+=my_char[ch]
   else:
     var2+=ch
 print var2

Possible duplicate of Replacing some characters in a string with another character — Tsyvarev
– Tsyvarev, Commented Dec 13, 2018 at 21:18

blhsing · Accepted Answer · 2018-12-11 22:57:47Z

2

You can use the tr command:

echo abc | tr abc bcd

This outputs:

bcd

answered Dec 11, 2018 at 22:57

blhsing

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