sed -i "s/128.18.60.58/7.7.4.202/g" snm.cfg
将128.18.60.58 替换为7.7.4.202
sed 's/^[[:space:]]\{8\}/\t/g'
将行首的8个空格替换成TAB
sed -i "s/128.18.60.58/7.7.4.202/g" snm.cfg
将128.18.60.58 替换为7.7.4.202
sed 's/^[[:space:]]\{8\}/\t/g'
将行首的8个空格替换成TAB