CODEWITHSUNDEEP
linux
epsilon
epsilon

Reputation: 53

linux paste and cut

I have a list of phone numbers that looks like this:

LAST NAME, First name 12344 ... ...

I want in a piped sequence to take only the first last names column and paste it into a new file when only the first letter is capital. For example:

NIXON

COHEN

will be:

Nixon

Cohen

I need to do it with cut and paste commands. I know how to cut the first latter:

cut -f1 -d"," phone.txt | cut -c1

And how to cut the rest of the letters and make them not capital:

cut -f1 -d"," phone.txt | cut -c2- | tr [A-Z] [a-z]

But I can't understand how to paste them together in one piped sequence. I can use grep or sed if it helps.

Thanks,

Upvotes: 1

Views: 75

Answers (2)

RomanPerekhrest
RomanPerekhrest

Reputation: 92854

Let's say the phone.txt file contains:

NIXON, John 123
COHEN, Tomas 345

sed approach:

sed 's/^\(.\)\([^,]*\).*/\u\1\L\2/' phone.txt

gawk alternative:

awk -F, '{print substr($1, 1, 1) tolower(substr($1, 2))}' phone.txt

The output(for both approaches):

Nixon
Cohen

Upvotes: 3

Shashank Katiyar
Shashank Katiyar

Reputation: 139

Try this: echo cut -f1 -d"," test.txt|cut -c1``cut -f1 -d"," test.txt|cut -c2- | tr [A-Z] [a-z]
Output : Nixon

Upvotes: 2

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