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#!/bin/sh

#作者：GROMACS中文组群: 广药-阿福
#x轴
grep ^ATOM $1 | awk ‘{print $7}’| sort -n |sed -n ‘1p;$p’
#y轴
grep ^ATOM $1 | awk ‘{print $8}’| sort -n |sed -n ‘1p;$p’
#z轴
grep ^ATOM $1 | awk ‘{print $9}’| sort -n |sed -n ‘1p;$p’