如何在Linux Shell脚本中插入新行? [英] How to insert a new line in Linux shell script?

问题描述

我想在多个echo语句之间插入新行.我已经尝试过echo "hello\n"，但是它不起作用.正在打印\n.我想要这样的期望输出:

I want to insert a new line between multiple echo statements. I have tried echo "hello\n", but it is not working. It is printing \n. I want the desired output like this:

Create the snapshots

Snapshot created

推荐答案

在echo语句之间插入新行的最简单方法是插入不带参数的echo，例如:

The simplest way to insert a new line between echo statements is to insert an echo without arguments, for example:

echo Create the snapshots
echo
echo Snapshot created

也就是说，没有任何参数的echo将打印空白行.

That is, echo without any arguments will print a blank line.

使用带有-e标志和嵌入式换行符\n的单个echo语句的另一种选择:

Another alternative to use a single echo statement with the -e flag and embedded newline characters \n:

echo -e "Create the snapshots\n\nSnapshot created"

但是，这不是可移植的，因为-e标志并非在所有系统中都一致工作.如果您确实要执行此操作，则更好的方法是使用printf:

However, this is not portable, as the -e flag doesn't work consistently in all systems. A better way if you really want to do this is using printf:

printf "Create the snapshots\n\nSnapshot created\n"

尽管它不兼容POSIX，但在许多系统中都能更可靠地工作.请注意，您必须手动在末尾添加\n，因为printf不会像echo那样自动添加换行符.

This works more reliably in many systems, though it's not POSIX compliant. Notice that you must manually add a \n at the end, as printf doesn't append a newline automatically as echo does.

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