You saw an example of command substitution in Listing 9 when we created a captive TAB character.
我们曾经在清单9中创建了一个强制制表符,您可以从中看到命令替换的例子。
Otherwise, no completion was possible, so it falls back to acting like a normal TAB key, by returning a literal TAB character.
否则其他补全将不可行,因此它通过返回一个制表符来充当正常的tab键。
A TAB character, on the other hand, can be interpreted different ways — as two, four, six, or even eight Spaces, depending on the platform or tool being used.
另一方面,制表符可以有不同的解释方式,根据所使用的平台或工具,可以解释为2个、4个、6个甚至8个空格。
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。
The combined length of message plus prefix can be at most 254 characters. The prefix must not contain a TAB character.
发送消息的长度(包括前缀)最长是254个字符。前缀不能包含任何制表符。
The combined length of message plus prefix can be at most 254 characters. The prefix must not contain a TAB character.
发送消息的长度(包括前缀)最长是254个字符。前缀不能包含任何制表符。
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