CODEWITHSUNDEEP
perlcommand-line
Joel Mellon
Joel Mellon

Reputation: 3855

Prevent perl from printing a newline

I have this simple command:

printf TEST | perl -nle 'print lc'

Which prints:

test
​

I want:

test

...without the newline. I tried perl's printf but that removes all newlines, and I'd like to keep existing one's in place. Plus, that wouldn't work for my second example that doesn't even use print in it:

printf "BOB'S BIG BOY" | perl -ple 's/([^\s.,-]+)/\u\L$1/g'

Which prints:

Bob's Big Boy
​

...with that annoying newline as well. I'm hoping for a magical switch like --no-newline but I'm guessing it's something more involved.

EDIT: I've changed my use of echo in the examples to printf to clarify the problem. A few commenters were correct in stating that my problem wouldn't actually be fixed as it was written.

Upvotes: 4

Views: 5913

Answers (1)

Gilles Quénot
Gilles Quénot

Reputation: 185025

You simply have to remove the -l switch, see perldoc perlrun

-l[octnum]
    enables automatic line-ending processing. It has two separate
    effects. First, it automatically chomps $/ (the input record
    separator) when used with -n or -p. Second, it assigns $\ (the output
    record separator) to have the value of octnum so that any print
    statements will have that separator added back on. If octnum is
    omitted, sets $\ to the current value of $/.

Upvotes: 6

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