对于这个目的，Heredoc听起来更方便。它用于向命令解释器程序(如ex或cat)发送多个命令

cat << EndOfMessage
This is line 1.
This is line 2.
Line 3.
EndOfMessage

<<后面的字符串表示停止的位置。

要将这些行发送到文件，请使用:

cat > $FILE <<- EOM
Line 1.
Line 2.
EOM

你也可以将这些行存储到一个变量中:

read -r -d '' VAR << EOM
This is line 1.
This is line 2.
Line 3.
EOM

这将行存储到名为VAR的变量中。

打印时，请记住变量周围的引号，否则将看不到换行符。

echo "$VAR"

更好的是，您可以使用缩进使它在代码中更加突出。这一次，只需在<<后添加一个-来阻止选项卡出现。

read -r -d '' VAR <<- EOM
    This is line 1.
    This is line 2.
    Line 3.
EOM

但是在代码中必须使用制表符而不是空格来缩进。

我听到这个答案，但也想把它输送到另一个命令。给出的答案是正确的，但如果有人想要管道它，您需要在像这样的多行字符串之前管道它

echo | tee /tmp/pipetest << EndOfMessage
This is line 1.
This is line 2.
Line 3.
EndOfMessage

这将允许您拥有多行字符串，但也可以将其放在后续命令的stdin中。

我发现了更多的解决方案，因为我想有每一行适当缩进:

You may use echo: echo "this is line one" \ "\n""this is line two" \ "\n""this is line three" \ > filename It does not work if you put "\n" just before \ on the end of a line. Alternatively, you can use printf for better portability (I happened to have a lot of problems with echo): printf '%s\n' \ "this is line one" \ "this is line two" \ "this is line three" \ > filename Yet another solution might be: text='' text="${text}this is line one\n" text="${text}this is line two\n" text="${text}this is line three\n" printf "%b" "$text" > filename or text='' text+="this is line one\n" text+="this is line two\n" text+="this is line three\n" printf "%b" "$text" > filename Another solution is achieved by mixing printf and sed. if something then printf '%s' ' this is line one this is line two this is line three ' | sed '1d;$d;s/^ //g' fi It is not easy to refactor code formatted like this as you hardcode the indentation level into the code. It is possible to use a helper function and some variable substitution tricks: unset text _() { text="${text}${text+ }${*}"; } # That's an empty line which demonstrates the reasoning behind # the usage of "+" instead of ":+" in the variable substitution # above. _ "" _ "this is line one" _ "this is line two" _ "this is line three" unset -f _ printf '%s' "$text"

Echo在传递给它的参数之间添加空格。$text受变量扩展和单词分割的影响，所以你的echo命令相当于:

echo -e "this" "is" "line" "one\n" "this" "is" "line" "two\n"  ...

你可以看到在“this”之前加了一个空格。你可以删除换行符，并引用$text来保留换行符:

text="this is line one
this is line two
this is line three"

echo "$text" > filename

或者你可以使用printf，它比echo更健壮和可移植:

printf "%s\n" "this is line one" "this is line two" "this is line three" > filename

在支持大括号展开的bash中，你甚至可以这样做:

printf "%s\n" "this is line "{one,two,three} > filename

在bash脚本中，以下工作:

#!/bin/sh

text="this is line one\nthis is line two\nthis is line three"
echo -e $text > filename

另外:

text="this is line one
this is line two
this is line three"
echo "$text" > filename

Cat文件名给出:

this is line one
this is line two
this is line three

下面是我喜欢的方式来分配一个多行字符串的变量(我认为它看起来不错)。

read -r -d '' my_variable << \
_______________________________________________________________________________

String1
String2
String3
...
StringN
_______________________________________________________________________________

在这两种情况下，下划线的数量是相同的(这里是80)。