[root@localhost fred]# cat date_test.sh
#!/bin/bash
date
date_start=`date +%s`
date_end=`date +%s`
date
min=`expr $date_end - $date_start`
echo "cost is "`expr $date_end - $date_start`" secs."
echo cost is `expr $min / 60` mins.
计算linux执行时间差
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转载自lifei0327.iteye.com/blog/1260174
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