bash - How do I replace the last character and insert a character to the beginning of a string? -


say have text file follows:

accio. aguamenti. alohomora. aparecium.

what i'd is:

-accio! -aguamenti! -alohomora! -aparecium!

this i've tried:

sed 's/.*[a-z]/-&!/g'

which yields:

-accio!. -alohomora!.

which pretty close not need. help?

you need use capturing group exclude character @ end:

$ sed  's/^\(.*\)\.$/-\1!/' file

or in 2 steps:

$ sed  -e 's/\.$/!/' -e 's/.*/-&/' file

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