Jeff Schaller's questions

我想从任意 shell 脚本中提取命令。我使用了 morbig（向Michael Homer表示建议！）从 shell 脚本生成 JSON 文件。

例如，这个 shell 脚本：

#!/bin/sh
echo hi
false || echo something
true && echo something

生成以下 JSON：

[
  "Program_LineBreak_CompleteCommands_LineBreak",
  [ "LineBreak_Empty" ],
  [
    "CompleteCommands_CompleteCommands_NewlineList_CompleteCommand",
    [
      "CompleteCommands_CompleteCommands_NewlineList_CompleteCommand",
      [
        "CompleteCommands_CompleteCommand",
        [
          "CompleteCommand_CList",
          [
            "CList_AndOr",
            [
              "AndOr_Pipeline",
              [
                "Pipeline_PipeSequence",
                [
                  "PipeSequence_Command",
                  [
                    "Command_SimpleCommand",
                    [
                      "SimpleCommand_CmdName_CmdSuffix",
                      [
                        "CmdName_Word",
                        [ "Word", "echo", [ [ "WordName", "echo" ] ] ]
                      ],
                      [
                        "CmdSuffix_Word",
                        [ "Word", "hi", [ [ "WordName", "hi" ] ] ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
          ]
        ]
      ],
      [ "NewLineList_NewLine" ],
      [
        "CompleteCommand_CList",
        [
          "CList_AndOr",
          [
            "AndOr_AndOr_OrIf_LineBreak_Pipeline",
            [
              "AndOr_Pipeline",
              [
                "Pipeline_PipeSequence",
                [
                  "PipeSequence_Command",
                  [
                    "Command_SimpleCommand",
                    [
                      "SimpleCommand_CmdName",
                      [
                        "CmdName_Word",
                        [ "Word", "false", [ [ "WordName", "false" ] ] ]
                      ]
                    ]
                  ]
                ]
              ]
            ],
            [ "LineBreak_Empty" ],
            [
              "Pipeline_PipeSequence",
              [
                "PipeSequence_Command",
                [
                  "Command_SimpleCommand",
                  [
                    "SimpleCommand_CmdName_CmdSuffix",
                    [
                      "CmdName_Word",
                      [ "Word", "echo", [ [ "WordName", "echo" ] ] ]
                    ],
                    [
                      "CmdSuffix_Word",
                      [
                        "Word",
                        "something",
                        [ [ "WordName", "something" ] ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
          ]
        ]
      ]
    ],
    [ "NewLineList_NewLine" ],
    [
      "CompleteCommand_CList",
      [
        "CList_AndOr",
        [
          "AndOr_AndOr_AndIf_LineBreak_Pipeline",
          [
            "AndOr_Pipeline",
            [
              "Pipeline_PipeSequence",
              [
                "PipeSequence_Command",
                [
                  "Command_SimpleCommand",
                  [
                    "SimpleCommand_CmdName",
                    [
                      "CmdName_Word",
                      [ "Word", "true", [ [ "WordName", "true" ] ] ]
                    ]
                  ]
                ]
              ]
            ]
          ],
          [ "LineBreak_Empty" ],
          [
            "Pipeline_PipeSequence",
            [
              "PipeSequence_Command",
              [
                "Command_SimpleCommand",
                [
                  "SimpleCommand_CmdName_CmdSuffix",
                  [
                    "CmdName_Word",
                    [ "Word", "echo", [ [ "WordName", "echo" ] ] ]
                  ],
                  [
                    "CmdSuffix_Word",
                    [ "Word", "something", [ [ "WordName", "something" ] ] ]
                  ]
                ]
              ]
            ]
          ]
        ]
      ]
    ]
  ],
  [ "LineBreak_Empty" ]
]

我希望看到以下输出：

echo
false
echo
true
echo

...暂时忽略基本命令的任何参数、选项和参数。输出命令的顺序无关紧要。如果在输出之前很容易使它们独一无二（|sort -u之后保存），则可以加分。

我已经做到了：

< simple.json jq flatten | grep -A2 CmdName_Word

但这感觉像是错误的方法。我想告诉jq我“CmdName_Word”之后的“Word”之后的单词，但我不知道该怎么做。

如果您想在本地重现这些步骤（摘自https://github.com/colis-anr/morbig）：

1. （根据您的操作系统安装 docker）

2. docker pull colisanr/morbig:latest

3. 定义一个 shell 函数以便于使用：

    morbig () {
      D=$(cd "$(dirname "$1")"; pwd)
      B=$(basename "$1")
      docker run \
        -v "$D":/mnt \
        colisanr/morbig:latest --as simple /mnt/"$B"
    }
   

4. 确保包含 shell 脚本的目录可由 UID 1000 写入（docker 容器在 UID 1000 的容器内以用户“opam”身份运行）。

5. morbig your-shell-script-here.sh

6. 生成的your-shell-script-here.sh.sjsonJSON 将与 shell 脚本位于同一目录中。

在通过 NIM 使用 mksysb 迁移升级 AIX 系统后，AIX-rpm 虚拟包被遗留在之前的 AIX 级别：

$ oslevel -r
7100-04
$ rpm -q AIX-rpm
AIX-rpm-6.1.7.0-7

这可以防止安装依赖于某个 AIX-rpm 版本的其他 RPM，例如：

$ sudo rpm -Uvh libgcc-6.3.0-2.aix7.1.ppc.rpm
error: failed dependencies:
        AIX-rpm >= 7.1.0.0 is needed by libgcc-6.3.0-2

您可以通过查询包的依赖项来预先测试这种情况：

$ rpm -qp --requires libgcc-6.3.0-2.aix7.1.ppc.rpm
AIX-rpm >= 7.1.0.0
AIX-rpm < 7.2.0.0
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1

...或使用 rpm--test选项：

$ sudo rpm -Uvh --test libgcc-6.3.0-2.aix7.1.ppc.rpm
error: failed dependencies:
        AIX-rpm >= 7.1.0.0 is needed by libgcc-6.3.0-2

如何将 AIX-rpm 安装或升级到正确的级别，以便无需强制安装额外的 RPM --nodeps？

我有一行（或多行）由任意字符分隔的数字。我可以使用哪些 UNIX 工具对每行的项目进行数字排序，同时保留分隔符？

示例包括：

• 号码列表；输入：10 50 23 42; 排序：10 23 42 50
• IP地址; 输入：10.1.200.42; 排序：1.10.42.200
• CSV；输入：1,100,330,42; 排序：1,42,100,330
• 管道分隔；输入：400|500|404; 排序：400|404|500

由于分隔符是任意的，请随意使用您选择的单字符分隔符提供（或扩展）答案。