2020-07-09 21:30:44 +01:00
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# echo
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2021-08-02 09:41:09 +01:00
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> 输出给定参数。
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2021-08-31 08:13:49 +01:00
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> 更多信息：<https://www.gnu.org/software/coreutils/echo>.
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2020-07-09 21:30:44 +01:00
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2021-08-02 09:41:09 +01:00
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- 输出文本信息. 注意： 引号是可选的：
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2020-07-09 21:30:44 +01:00
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2020-10-04 18:33:38 +01:00
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`echo "{{Hello World}}"`
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2020-07-09 21:30:44 +01:00
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2021-08-02 09:41:09 +01:00
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- 输出带有环境变量的信息：
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2020-07-09 21:30:44 +01:00
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2020-10-04 18:33:38 +01:00
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`echo "{{My path is $PATH}}"`
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2020-07-09 21:30:44 +01:00
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- 打印不带尾随换行符的信息：
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2020-10-04 18:33:38 +01:00
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`echo -n "{{Hello World}}"`
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2020-07-09 21:30:44 +01:00
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2021-08-02 09:41:09 +01:00
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- 向文件添加信息：
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2020-07-09 21:30:44 +01:00
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2020-10-04 18:33:38 +01:00
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`echo "{{Hello World}}" >> {{file.txt}}`
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2020-07-09 21:30:44 +01:00
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2021-08-02 09:41:09 +01:00
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- 启用反斜杠转义的解释（特殊字符）：
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2020-07-09 21:30:44 +01:00
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2020-10-04 18:33:38 +01:00
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`echo -e "{{Column 1\tColumn 2}}"`
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