mysql - 把MySQL命令输出放到一个变量里，也打印在屏幕上？

Question

我真的很不好意思问这个问题，但是真的有办法将 MySQL 输出(例如 ls -l)重定向到 STDOUT 并同时分配给变量吗？我试过这个:

san@pcjq:~$ exec 5>&1
san@pcjq:~$ SQL=$(mysql -uroot -p mysql -e "SELECT Host,User,Password FROM user;" | tee >(cat - >&5))
Enter password: 
Host    User    Password
127.0.0.1   root    *CD0B39440D9701958FDA10ED6B02E3507DC28EB
%   slvUser *8E6F445A9F0E7AA18DA1D830CC61B5AAC9C606
localhost   root    *CD0B39440D9701958FDA10ED6B02E3507DC28EB
localhost   san *8E6F4A10ED6B00E7AA18DA10EDD830CC61B5AAC9C606
localhost   debian-sys-maint    *1BF46B679FC8911CD06712EC782E446F01201CB7

这并不是我们通常在屏幕上看到的输出的确切表示。另一方面:

SQL=$(mysql -uroot -p mysql -e "SELECT Host,User FROM user;" >&2)

确实在屏幕上打印了正确的输出，但注意到变量中有 gets(原因很明显)。有谁知道任何解决方法？干杯!

Answer 1

回答我自己的问题:

san@pcjq:~$ SQL=$(mysql -uroot -p mysql -t -e "SELECT Host,User FROM user;" \
| tee /dev/tty) && { echo "This is the ECHO:"; echo "$SQL"; }
Enter password: 
+-----------+------------------+
| Host      | User             |
+-----------+------------------+
| %         | slvUser          |
| 127.0.0.1 | root             |
| localhost | debian-sys-maint |
| localhost | root             |
| localhost | santanu          |
+-----------+------------------+
This is the ECHO:
+-----------+------------------+
| Host      | User             |
+-----------+------------------+
| %         | slvUser          |
| 127.0.0.1 | root             |
| localhost | debian-sys-maint |
| localhost | root             |
| localhost | santanu          |
+-----------+------------------+

-t 是神奇的选项。来自 MySQL 手册页:

--table, -t

       Display output in table format. This is the default for interactive use, 
       but can be used to produce table output in batch mode.

干杯!