subget

By mauro, on Junio 5th, 2009%

subget.sh: Shell script para bajar subtítulos automáticamente de subdivx.com.
Se usa desde línea de . . . → Read More: subget

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From being to becoming

By mauro, on Septiembre 22nd, 2007%

“Suppress previous identity (and ignore errors)” way:

echo being >/dev/null | echo becoming

“Simple (and too obvious)” way:

echo being | sed ‘s/\(..\)/\1com/’

Sometimes becoming can be complex (and machine dependant):

echo being | sed "s/\(..\)/\1`evil 2>&1 | sed ‘s/…………\(…\).*/\1/’`/"

Becoming can be even more complex (complexier?), and fail in various subtle and unpredicted ways:

echo being | sed "s/\(..\)/\1`\`echo $[RANDOM / 100]| . . . → Read More: From being to becoming

Leave a comment   English, Esoterismo, Filosofía, To geek or not to geek   ,  

Argentinos

By mauro, on Septiembre 6th, 2007%

echo ARGENTINOS | sed ‘s/\(.\)\(.\)\(.\)\(.\)\(..\)\(.\)\(..\)/\6\3\7\2\1\5\4/’

Ahora la esposa del actual presidente va a ser candidata a presidente.
Y probablemente gane, porque junto a su esposo el actual presidente, mientras ha durado su prolífico mandato, han sido relativamente hábiles en consolidar alianzas y acuerdos con sectores clave del país, desde la patria contratista a los piqueteros, pasando por Macri, . . . → Read More: Argentinos

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Obfuscated hello world! (perl regex powered)

By mauro, on Junio 6th, 2007%

¿Cuáles son las 10 primeras cifras consecutivas no repetidas de los decimales de PI?
4592307816

echo "scale=100;a(1)*4" | bc -l | sed ‘:a;N;s/\\\n//;ta’ | \
perl -pe ‘s/.*?(.)(?!\1)(.)(?!\1|\2)(.)(?!\1|\2|\3)(.)(?!\1|\2|\3|\4)(.)(?!\1|\2|\3|\4|\5)(.)(?!\1|\2|\3|\4|\5|\6)(.)(?!\1|\2|\3|\4|\5|\6|\7)(.)(?!\1|\2|\3|\4|\5|\6|\7|\8)(.)(?!\1|\2|\3|\4|\5|\6|\7|\8|\9)(.).*/$1$2$3$4$5$6$7$8$9$10/’

¿Dónde en las cifras de PI está escondida la frase ‘Hello world’?
21463853067

Pues

$ echo 21463853067 | tr 0-9 reHolwld\
Hello world
$
echo "scale=4721;a(1)*4" | bc -l | sed ‘:a;N;s/\\\n//;ta’ | \
perl -pe ‘s/.*?(.)(?!\1)(.)(?!\1|\2)(.)(?!\1|\2)(.)(?!\1|\2|\3|\4)(.)(?!\1|\2|\3|\4|\5)(.)(?!\1|\2|\3|\4|\5|\6)(.)(?!\1|\2|\3|\4|\6|\7)(.)(?!\1|\2|\3|\4|\5|\6|\7|\8)(.)(?!\1|\2|\5|\6|\7|\8|\9)(.)(?!\1|\2|\3|\4|\5|\6|\7|\8|\9|\10)(.).*/$1$2$3$4$5$6$7$8$9$10$11/’ | . . . → Read More: Obfuscated hello world! (perl regex powered)

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