摘要: echo "this is the ${num}nd" --变量后接字符组要大括号括起来 fullname="$first_name $last_name $shell" 多个变量想连需要双引号 cut -b5-9 hosts expr 2 "+" 3 | tee 5.txt echo "$SHEL 阅读全文
posted @ 2020-04-17 10:23 悠游~~~ 阅读(1493) 评论(0) 推荐(0)