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Accepted
ranjit abraham
Asked: 2022-03-31 22:45:44 +0800 CST

sed 用字符串中的任何随机单词替换

  • 772

您好，我正在尝试使用 sed 对字符串后跟任何随机字符串的文件进行替换。我的原始文件如下所示。

access = read : [ * ], write : [ admin, sc_admin ]
access = read : [ * ], write : [ admin, myuser ]
access = read : [ * ], write : [ admin ]
access = read : [ * ], write : [ admin, randomuser ]
access = read : [ * ], write : [ admin, randomuser, somedude ]
access = read : [ * ], write : [ admin, justarandomuser, somedude, anotherdude ]
access = read : [ * ], write : [ admin, another_random_user ]

我需要在我跟随 admin 的随机用户之后添加一个名为 sc_admin 的字符串，使其看起来像这样

access = read : [ * ], write : [ admin, sc_admin ]
access = read : [ * ], write : [ admin, myuser, sc_admin ]
access = read : [ * ], write : [ admin ]
access = read : [ * ], write : [ admin, randomuser, sc_admin ]
access = read : [ * ], write : [ admin, randomuser, somedude, sc_admin ]
access = read : [ * ], write : [ admin, justarandomuser, somedude, anotherdude, sc_admin ]
access = read : [ * ], write : [ admin, another_random_user, sc_admin ]

我正在尝试运行以下 sed 命令，但它什么也没做。

sed -r "s/\[\ admin\,\ \w+\ \]/\[\ admin\,\ \w+\,\ sc\_admin\ \]/g" local.meta

我在这里想念什么？

awk sed

3 个回答

  1. Best Answer

    跳过已经包含 的行sc_admin，然后仅替换包含 的行admin,：

    sed -e '/\bsc_admin\b/b' -e '/admin,/ s/ *] *$/, sc_admin ]/' infile

    输出：

    access = read : [ * ], write : [ admin, sc_admin ]
access = read : [ * ], write : [ admin, myuser, sc_admin ]
access = read : [ * ], write : [ admin ]
access = read : [ * ], write : [ admin, randomuser, sc_admin ]
access = read : [ * ], write : [ admin, randomuser, somedude, sc_admin ]
access = read : [ * ], write : [ admin, justarandomuser, somedude, anotherdude, sc_admin ]
access = read : [ * ], write : [ admin, another_random_user, sc_admin ]
    • 1

  2. 使用sed

    $ sed '/sc_admin\>/!s/\[ admin,.*[a-z]/&, sc_admin/' input_file
access = read : [ * ], write : [ admin, sc_admin ]
access = read : [ * ], write : [ admin, myuser, sc_admin ]
access = read : [ * ], write : [ admin ]
access = read : [ * ], write : [ admin, randomuser, sc_admin ]
access = read : [ * ], write : [ admin, randomuser, somedude, sc_admin ]
access = read : [ * ], write : [ admin, justarandomuser, somedude, anotherdude, sc_admin ]
access = read : [ * ], write : [ admin, another_random_user, sc_admin ]
    • 1 
  3. awk '!/sc_admin/ && /admin,/{gsub(/\]$/,",scadmin ]",$0)}1' filename

    输出

    access = read : [ * ], write : [ admin, sc_admin ]
access = read : [ * ], write : [ admin, myuser ,scadmin ]
access = read : [ * ], write : [ admin ]
access = read : [ * ], write : [ admin, randomuser ,scadmin ]
access = read : [ * ], write : [ admin, randomuser, somedude ,scadmin ]
access = read : [ * ], write : [ admin, justarandomuser, somedude, anotherdude ,scadmin ]
access = read : [ * ], write : [ admin, another_random_user ,scadmin ]
    • 0

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