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标题: TOOL=`which avr-gcc 2>/dev/null`怎么解释？ [打印本页]

作者: sunmoonloong 时间: 2009-10-27 16:46
标题: TOOL=`which avr-gcc 2>/dev/null`怎么解释？
# Check if there's already a avr-gcc
TOOL=`which avr-gcc 2>/dev/null`;
if [ "${TOOL}" != "" ]; then
echo "There's already a avr-gcc in ${TOOL},";
echo "please remove it, as it will conflict";
echo "with the build process!";
exit 1;
fi;

作者: chenyx 时间: 2009-10-27 16:47
shell把两个·之间的命令结果返回给变量

作者: sunmoonloong 时间: 2009-10-27 16:57
能不能说得详细点，我很笨，初学者

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