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工作学习 / IT技术讨论 / A question to those DX who are proficiency in UNIX scriptsWrite a script to use the rot13 (rotate 13) algorithm to encrypt/decrypt a file. rot13 adds 13 to the letters (with wrap-around). So A-M convert to N-Z and N-Z convert to A-M. "Bat" would convert to "Nmg". The first parameter should be a file to convert if present. If not present convert stdin. The second parameter should be an output file name if present. If not the output should go to stdout.
-goto(goto);
2002-1-26
{401}
(#348554@0)
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Let me try ... BTW, "Bat" should be "Ong" not "Nmg" :)#!/bin/sh
if [ "X$1" = "X" ]
then
INPUT="-"
else INPUT=$1
fi
if [ "X$2" = "X" ]
then
OUTPUT=`tty`
else OUTPUT="$2"
fi
cat $INPUT | tr [a-mn-zA-MN-Z] [n-za-mN-ZA-m] > $OUTPUT
-dennis2(Dennis);
2002-1-27
{202}
(#349294@0)
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谢谢
-goto(goto);
2002-1-27
(#349543@0)