For each host we connect to, as read in the all_hosts file, the here document method is used.
对于要连接的每个主机(从all_hosts文件读取)，使用here document方法。
To automate the process of graph generation using shell scripts, I recommend using the 'here' document method, as this process can be used to generate graphs using gnuplot on the fly.
要想使用shell脚本自动执行图形生成，我建议使用'here '文档方法，可以通过这个过程使用gnuplot动态地生成图形。
Shells, including bash, also have the concept of a here-document, which is another form of input redirection.
Shell（包括bash）还有存在here-document的概念，它是另一种输入重定向形式。
In Listing 9 we create a captive TAB character using command substitution and then create a very small shell script containing two cat commands, which each read from a here-document.
在清单9中，我们使用命令行替换创建了一个强制制表符，然后创建了一个包含两个cat命令的shell脚本，这两个命令都从here - document读取数据。
Using <<, also known as a here-document, can save some formatting time and is easier on the processing time of the command execution.
使用 <<（也称为here-document）可以节省格式化时间，并且使命令执行的处理更容易。
Using <<, also known as a here-document, can save some formatting time and is easier on the processing time of the command execution.
使用 <<（也称为here-document）可以节省格式化时间，并且使命令执行的处理更容易。
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