sed‘s/‘$var1‘/‘$var1‘=‘$var2‘/g‘ file1.x > file2.y
eg:
sed ‘s/‘Hostname=192.168.10.87‘/‘Hostname‘=‘${network_ip}‘/g‘zabbix_agentd.conf >${INSTALL_DIR}/etc/zabbix_agentd.conf
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原文:http://sunday208.blog.51cto.com/377871/1387044