我们如何在Shell脚本中将变量与字母分开? [英] How do we separate variables from letters in shell scripting?

问题描述

我尝试打印狗是最好的".这个bash脚本.

I tried printing "Dogs are the best." with this bash script.

#!/bin/bash

ANIMAL="Dog"
echo "$ANIMALs are the best."
exit 

但是，我得到了最好的".而是打印出来，因为$ANIMALS中的s没有与变量分开.如何将其分开?

However, I got " are the best." printed out instead because the s in $ANIMALS is not separated from the variable. How do I separate it?

推荐答案

带大括号:echo "${ANIMAL}s are the best."

带引号:echo "$ANIMAL"'s are the best.'

使用printf:printf '%ss are the best.\n' "$ANIMAL"

我大部分时间不会使用引号.我觉得它不可读，但是请注意.

I wouldn't use the quotes one most of the time. I don't find it readable, but it's good to be aware of.

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