compgen, eval, export, file: move to common (#6508)
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pages.zh/common/export.md
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pages.zh/common/export.md
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# export
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> 命令为当前 shell 中的子进程进行环境变量设置。
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> 更多信息:<https://www.gnu.org/software/bash/manual/bash.html#index-export>.
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- 设置为新的环境变量:
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`export {{某变量名}}={{值}}`
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- 删除环境变量:
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`export -n {{某变量名}}`
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- 给 PATH 追加新的路径进去:
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`export PATH=$PATH:{{追加的 path 路径}}`
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