bash shell的脚本 - 回车键/确认键 [英] Bash Shell Scripting - return key/Enter key
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问题描述
我需要比较我与输入<大骨节病>输入骨节病> / <大骨节病>返回骨节病>键...
I need to compare my input with Enter/Return key...
read -n1 key
if [ $key == "\n" ]
echo "@@@"
fi
但是,这是行不通的。什么是不对的code
But this is not working.. What is wrong with this code
推荐答案
在公布code的几个问题。行内注释细节解决什么:
Several issues with the posted code. Inline comments detail what to fix:
#!/bin/bash
# ^^ Bash, not sh, must be used for read options
read -s -n 1 key # -s: do not echo input character. -n 1: read only 1 character (separate with space)
# double brackets to test, single equals sign, empty string for just 'enter' in this case...
# if [[ ... ]] is followed by semicolon and 'then' keyword
if [[ $key = "" ]]; then
echo 'You pressed enter!'
else
echo "You pressed '$key'"
fi
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