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| selfgol [2007-10-06 19:47] – 192.168.1.48 | selfgol [2025-06-03 07:47] (current) – nik |
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| Usage: | Usage: |
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| selfgol -s outputs its own source code. | ''selfgol -s'' outputs its own source code. |
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| selfgol < perlprog.pl makes perlprog.pl self-replicating (with a command line switch of -s), outputs new source to STDOUT. | ''selfgol < perlprog.pl'' makes perlprog.pl self-replicating (with a command line switch of -s), outputs new source to STDOUT. |
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| | ''selfgol -g [-y=## -x=##] [< gamefile]'' plays the Game of Life with its own source code or an arbitrary file, with optional height and width restrictions. |
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| selfgol -g [-y=## -x=##] [< gamefile] plays the Game of Life with its own source code or an arbitrary file, with optional height and width restrictions. | ''selfgol -d[=bannertext]'' displays a rotating banner with the provided text. If no text is provided, it uses the program name as the text. |
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| selfgol -d[=bannertext] displays a rotating banner with the provided text. If no text is provided, it uses the program name as the text. | |
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| SelfGOL was written to win all four categories in the Obfuscated Perl contest (3rd year, I believe, whose web pages are no longer available) and still comply with other restrictions of not using modules and being under 1000 bytes. Alas, the rules were drastically changed for the following year's contest, and so it was never entered. | SelfGOL was written to win all four categories in the Obfuscated Perl contest (3rd year, I believe, whose web pages are no longer available) and still comply with other restrictions of not using modules and being under 1000 bytes. Alas, the rules were drastically changed for the following year's contest, and so it was never entered. |
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| the self-replicating code, used the standard quine code: | the self-replicating code is based on the standard [[quine]] in perl |
| |
| <code perl> | <code perl> |
| @s=( | @s=( |
| q[printf pop@s, @s], | q[printf pop@s, @s], |
| q[@s=(q[%s],q[%s])x2;%s], | q[@s=(q[%s],q[%s])x2;%s], |
| )x2; | )x2; |
| printf pop @s, @s; | printf pop @s, @s; |
| | </code> |
| |
| #!/usr/bin/perl -s | ...expanded into this Obfuscation |
| $;=$/;seek+DATA,!++$/,!$s;$_=<DATA>;$s&&print||$g&&do{$y=($x||=20)*($y||8);sub | |
| i{sleep&f}sub'p{print$;x$=,join$;,$b=~/.{$x}/g}$j=$j;sub'f{pop}sub | <code perl> |
| n{substr($b,&f%$y,3)=~tr,O,O,}sub'g{$f=&f-1;($w,$w,substr($b,&f,1),O)[n($f-$x)+ | #!/usr/bin/perl -s |
| n($x+$f)-(substr($b,&f,1)eq+O)+n$f]||$w}$w="\40";$b=join'',@ARGV?<>:$_,$w | $;=$/;seek+DATA,undef$/,!$s;$_=<DATA>;$s&&print||(*{q;::\; |
| x$y;$b=~s).)$&=~/\w/?O:$w)ge;substr($b,$y)=q++;$g='$i=0;$i?$b:$c=$b; | ;}=sub{$d=$d-1?$d:$0;s;';\t#$d#;,$_})&&$g&&do{$y=($x||=20)*($y||8);sub |
| substr+$c,$i,1,g$i;$g=~s?\d+?($&+1)%$y?e;$i-$y+1?eval$g:do{$i=-1;$b=$c;p;i | i{sleep&f}sub'p{print$;x$=,join$;,$b=~/.{$x}/g,$;}sub'f{pop||1}sub'n{substr($b, |
| 1}';sub'e{eval$g;&e}e}||eval||die+No.$; | &f%$y,3)=~tr,O,O,}sub'g{@_[~~@_]=@_;--($f=&f);$m=substr($b,&f,1);($w,$w,$m,O) |
| | [n($f-$x)+n($x+$f)-(${m}eq+O=>)+n$f]||$w}$w="\40";$b=join'',@ARGV?<>:$_,$w |
| | x$y;$b=~s).)$&=~/\w/?O:$w)gse;substr($b,$y)=q++;$g='$i=0;$i?$b:$c=$b; |
| | substr+$c,$i,1,g$i;$g=~s?\d+?($&+1)%$y?e;$i-$y+1?eval$g:do{$b=$c;p;i}'; |
| | sub'e{eval$g;&e};e}||eval||die+No.$; |
| __DATA__ | __DATA__ |
| if($j){{$^W=$|;*_=sub{$=+s=#([A-z])(.*)#=#$+$1#=g}} | $d&&do{{$^W=$|;*_=sub{$=+s=#([A-z])(.*)#=#$+$1#=g}} |
| @s=(q[$_=sprintf+pop@s,@s],q[ | @s=(q[$_=sprintf+pop@s,@s],";\n"->($_=q[ |
| if($j){{$^W=$|;*_=sub{$=+s=#([A-z])(.*)#=#$+$1#=g}} #_The_Perl_Journal_# | $d&&do{{$^W=$|;*_=sub{$=+s=#([A-z])(.*)#=#$+$1#=g}}' |
| @s=(q[%s],q[%s])x2;%s;print"\n"x&_,$_;i$j;eval} | @s=(q[%s],q[%s])x2;%s;print"\n"x&_,$_;i;eval}; |
| ])x2;$_=sprintf+pop@s,@s;print"\n"x&_,$_;i$j;eval}$/=$y;$"=",";print | ]))x2;$_=sprintf+pop@s,@s;print"\n"x&_,$_;i;eval};$/=$y;$"=",";print |
| q<#!/usr/local/bin/perl -sw | q<#!/usr/bin/perl -sw |
| if(!$s){>.($_=<>).q<}else{@s=(q[printf+pop@s,@s],q[#!/usr/local/bin/perl -sw | !$s?{do{>.($_=<>).q<}:do{@s=(q[printf+pop@s,@s],q[#!/usr/bin/perl -sw |
| if(!$s){>.(s$%$%%$g,tr=[=[===tr=]=]=||&d,$_).q<}else{@s=(q[%s],q[%s])x2;%s} | !$s?{do{>.(s$%$%%$g,y=[====y=]==||&d,$_).q<}:do{@s=(q[%s],q[%s])x2;%s} |
| ])x2;printf+pop@s,@s} | ])x2;printf+pop@s,@s} |
| > | > |
| </code> | </code> |
| |
| or download -> [[/pub/Libarynth/SelfGOL/SelfGOL.tgz|SelfGOL.tgz]] | |
| |
| ---- | ==== some (other) perl quines ==== |
| | |
| | |
| ==== some perl quines ==== | |
| |
| loosely related,.. from -> http://www.nyx.net/~gthompso/quine.htm | loosely related,.. from -> http://www.nyx.net/~gthompso/quine.htm |
| |
| Author: Brian Raiter | Author: Brian Raiter |
| <code> | <code perl> |
| $_=q{$_=q{Q};s/Q/$_/;print};s/Q/$_/;print | $_=q{$_=q{Q};s/Q/$_/;print};s/Q/$_/;print |
| </code> | </code> |
| |
| Author: V Vinay | Author: V Vinay |
| <code> | <code perl> |
| $_=q(print"\$_=q($_);eval;");eval; | $_=q(print"\$_=q($_);eval;");eval; |
| </code> | </code> |
