I have a simple file test.out that contains data in the form of

key1=A|shift1
key2=B|shift2
key3=C|shift3

and so on.

I need to get it to print

A
B
C

I can do it using lookbehind assertion such as this
( ?<==)([a-zA-Z])

yet I was wondering if there is another way of mutching single character following the '=' ?. I am fairly new to regex and so far I could not find good way of matching a part of a string after or before certain characters or set of characters other that using assertions.
Any examples would be helpful.
thank you in advance

thank you it worked.

Being on the same topic I have another question.
If I have files that contains following data

key1^A|shift1|376
key2^B|shift
key3^C|shift23|2|5

and so on

how would I change first instance of the '|' to '^' ?

to have something like this

key1^A^shift1|376
key2^B^shift
key3^c^shift23|2|5

I tried
sed 's/.+\d\^[a-zA-Z]\|.*/s/.+\d\^[a-zA-Z]\^.*/'

but that did not work
thank you in advance

actually its simple sed substitution -