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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