shell脚本对字符串的拼接 如何在shell中执行字符串拼接起来的命令c？
如何在shell中执行字符串拼接起来的命令c？[根@localhost~]#a=123您在/var/spool/mail/root中有新邮件[根@localhost~]#b=456[根@localho
如何在shell中执行字符串拼接起来的命令c？
[根@localhost~]#a=123您在/var/spool/mail/root中有新邮件[根@localhost~]#b=456[根@localhost~]#回声$a$b123456[根@localhost~]#c=$a$b美元[根@localhost~]#回音$123456