Created
April 14, 2015 22:02
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Bash variables
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$# es la cantidad de parámetros | |
$@ representa todos los parámetros, util para recorrerlos con un bucle for. | |
$? contiene el valor de salida del último comando ejecutado | |
$$ es el PID del shell | |
$* todos los parámetros como una única palabra, debe ir encomillado "$*" | |
$- banderas pasadas al script utilizando set | |
$! PID del último comando en background | |
$_ pasa el argumento del comando anterior al actual |
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