3 ms·
Awk is even shorter: anything truthy works. You don't even need the print statement or brackets. Thus there are nine separate 1-byte programs which produce ca
by patio11 13y ago
Awk is even shorter: anything truthy works. You don't even need the print statement or brackets. Thus there are nine separate 1-byte programs which produce cat: [1], [2], [3], etc etc.
By default, unless you use the BEGIN block or something, awk will run your program on each line of stdlin. This is useful for programs of the type:
(/some regular expression/) { some action}
The default action if you don't specify one is "print $0" (the whole matching line). If your condition is a plain-ol' expression rather than a regular expression, and it always evaluates truthy, you thus get every line.
- acqq 13y agoYou are right, the shortest awk is one byte. Please post the link all nine variants I wasn't able to Google it. Still the shortest Perl is 0 bytes when the command line switch is allowed to be -p Update: That's actually called "the sed mode of Perl." Moreover these two command lines behave similarly: perl -pe 's/search/replace/g' and sed 's/search/replace/'
- dvdkhlng 13y agoSED is shorter (0 byte). SED /is/ a turing complete language [1] so don't try to claim that I'm cheating. sed < input > output :) [1] http://robertkotcher.com/sed.html http://robertkotcher.com/sed.html [update] s/set/sed/
- deleted 13y ago[deleted]
- acqq 13y agoThe command line equivalent, with Perl: perl -pe '' <input >output
- Alphasite_ 13y agoEven java can do that setOut(system.in); (iirc)
- dvdkhlng 13y ago> Even java can do that setOut(system.in); I was referring to an empty SED-program that would then be run via 'sed -f empty-file.sed'. Of course you need >0 bytes to invoke the SED program.