How to replace a letter of string at some position
8,888
Solution 1
There is a Advanced Bash-Scripting Guide that shows you how to do substring and concatenation.
Let's say:
#!/bin/bash
index=2
s=Hello
echo ${s:0:index-1}a${s:index}
Solution 2
Another solution with sed
:
$ echo "hello" | sed 's/\(.\{2\}\)./\1a/'
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Author by
Eng.Fouad
Updated on September 18, 2022Comments
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Eng.Fouad over 1 year
Suppose I want to replace the nth letter of some string, how can I do that?
I tried something like this but it's not correct:
#!/bin/bash index= # let say 2 s='Hello' echo ${s/$index/'a'} # This should print Healo
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mailq over 12 yearsDoes not work if index=0 but this is your homework. (And index > len(s) )