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30 lines
717 B
Bash
30 lines
717 B
Bash
#!/bin/sh
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prefix=$1
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# 最后一个 tty 是主 tty，显示的信息最全
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# 有些平台例如 aws/gcp 后台vnc只能截图，不能输入，用有没有鼠标判断
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# 因此如果有显示器且有鼠标，tty0 放最后面，否则 tty0 放前面
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ttys="ttyS0 ttyAMA0"
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if [ -e /dev/fb0 ] && [ -e /dev/input/mouse0 ]; then
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ttys="$ttys tty0"
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else
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ttys="tty0 $ttys"
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fi
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is_first=true
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for tty in $ttys; do
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if [ -e /dev/$tty ] && echo >/dev/$tty 2>/dev/null; then
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if ! $is_first; then
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printf " "
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fi
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is_first=false
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printf "%s" "$prefix$tty"
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if [ "$prefix" = "console=" ] && [ "$tty" = ttyS0 ]; then
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printf ",115200n8"
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fi
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fi
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done
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