split string to two parts using sed or awk or perl or bash

Question

I have string like this:

Grades ABCDEF-123456

I want to split this string to two sections like this

Grades ABCDEF
Grades 123456

How can I do that in bash?

Solution 1

echo Grades "ABCDE-12345" | sed 's/-/ /g' | awk '{ print $1" "$2"\n"$1" "$3'}
Grades ABCDE
Grades 12345

or per @steeldriver

awk -F'[ -]' '{print $1, $2; print $1, $3}'

Solution 2

You can do this entirely in your shell, too:

text="Grades ABCDEF-123456"

Split off the leading text. You could capture it if required, but here we'll just discard it:

grades="${text#* }"

Now we could extract the two parts as variables but for now we'll just print them:

echo "Grades ${grades%-*}"
echo "Grades ${grades#*-}"

You can also crash these together into a single output statement, but I don't think it's as readable (even if printf is safer than echo for certain classes of text):

printf "Grades %s\nGrades %s\n" "${grades%-*}" "${grades#*-}"

Solution 3

You can do it by replacing the dash with a newline followed by the first field:

perl -alpe 's/-/\n$F[0] /' 

Comments

[don_crissti]

Where does that string come from ? Is it stored in a variable or in a file ? Why tagging this bash if you want (per the title) to use sed, perl or awk ?

[Sincerity]

i have script for my study and i was unable to figure out how to split strings with the dash - which is pulling the letters and numbers together every time i tried to split it,

[smw]

There's really no need for sed here - just set the FS to include - i.e. awk -F'[ -]' '{print $1, $2; print $1, $3}'