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术语环境变量未设置

tag-icon • tag-icon 12.04 scripts
术语环境变量未设置

这是我想要通过 motd 执行的代码：

#!/bin/bash
IP=`ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'`
#clear
echo -e "Welcome to \e[0;32mDMS 4\e[0m"
echo
echo -e "Connect with your Browser to following IP-Address: \e[0;32mhttp://$IP\e[0m"
echo
echo "If no IP-Address is shown above then"
echo "maybe there is no DHCP-Server available in your network."
echo "If so you have to change the IP to a static Address."
echo -e "Just type \e[0;32mnetconf\e[0m and press Enter"

我将/usr/sbin/autologin-screen（脚本位置）放在00-header文件夹下的文件中/etc/update-motd.d。
有人知道我为什么会收到此错误吗：

TERM environment variable not set

注意* 删除 Clear 可删除 1 个错误。我还有另一个TERM environment variable not set

答案1

根据mod 手册：

   The  contents of /etc/motd are displayed by login(1) after a 
   successful login but just before it executes the login shell.

根据登录手册：

   On some installations, the environmental variable $TERM will be
   initialized to the terminal type on your tty line, as specified in
   /etc/ttytype.

并根据清晰的手册：

   It looks in the environment for the terminal type and then in the
   terminfo database to  figure out how to clear the screen.

我猜 TERM 变量是在你的动态脚本执行，因此，清除命令打印TERM environment variable not set。

在 lubuntu 12.04 上，我通过unset TERMand exec测试了这一点clear。在这种情况下，我得到了同样的错误。

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