Question

我有一个字符串：

'driver' => 'Cake\Database\Driver\Mysql'

我需要替换为：

'foo' => 'bar'

但我的sed命令似乎都没有，例如

sed -i "s/\x27driver\x27 => \x27Cake\Database\Driver\Mysql\x27/\x27driver\x27 => \x27Cake\Database\Driver\Postgres\x27/g"  /path/to/file.ext

或

sed -i "s/'driver' => 'Cake\Database\Driver\Mysql'/'driver' => 'Cake\Database\Driver\Postgres'/g"  /path/to/file.ext

我该如何替换？

谢谢！

Answer 1

您可以使用：

SQ=$'\x27'
sed "s/${SQ}driver${SQ} => ${SQ}Cake\\\\Database\\\\Driver\\\\Mysql${SQ}/${SQ}driver${SQ} => ${SQ}Cake\\\\Database\\\\Driver\\\\Postgres${SQ}/" file
'driver' => 'Cake\Database\Driver\Postgres'

您需要使用\\\\来匹配\并匹配单引号定义变量，如上所示。

Answer 2

这适用于我使用GNU sed，我不知道为什么它不可移植：

$ path='Cake\\Database\\Driver\\Mysql'
$ sed "s/'driver' => '${path}'/'foo' => 'bar'/" <<<"'driver' => 'Cake\\Database\\Driver\\Mysql'"
'foo' => 'bar'

在双引号内，单引号可以按字面意思使用。为了使sed行更容易，我将路径移动到变量。

Answer 3

这可以在这里进行快速测试：

sed "s/'driver' => 'Cake\\\Database\\\Driver\\\Mysql'/'driver' => 'Cake\\\Database\\\Driver\\\Postgres'/g"

Answer 4

你必须逃避反斜杠：\：

kent$  sed "s#'driver' => 'Cake\\\\Database\\\\Driver\\\\Mysql'#'foo' => 'bar'#"<<<"'driver' => 'Cake\Database\Driver\Mysql'"   
'foo' => 'bar'

kent$  sed 's/\x27driver\x27 => \x27Cake\\Database\\Driver\\Mysql\x27/\x27foo\x27 => \x27bar\x27/'<<<"'driver' => 'Cake\Database\Driver\Mysql'"   
'foo' => 'bar'

Answer 5

不是Linux人，只是在这里猜测。

Perl引擎处理器应该看到什么：

s/'driver' => 'Cake\\Database\\Driver\\Mysql'/'driver' => 'Cake\\Database\\Driver\\Postgres'/g

命令处理器的单引号：

sed 's/\'driver\' => \'Cake\\\Database\\\Driver\\\Mysql\'/\'driver\' => \'Cake\\\Database\\\Driver\\\Postgres\'/g'  /path/to/file.ext

命令处理器的双引号：

sed  "s/'driver' => 'Cake\\\\Database\\\\Driver\\\\Mysql'/'driver' => 'Cake\\\\Database\\\\Driver\\\\Postgres'/g"  /path/to/file.ext

Answer 6

所给出的答案都没有像我们写的那样对我有用，所以我用它们作为测试的灵感，发现这对我有用：

sed -i 's/\x27driver\x27 => \x27Cake\\\Database\\\Driver\\\Postgres\x27/\x27driver\x27 => \x27Cake\\\Database\\\Driver\\\Mysql\x27/g'  /path/to/file.ext

sed -i 's/\x27driver\x27 => \x27Cake\\\Database\\\Driver\\\Mysql\x27/\x27driver\x27 => \x27Cake\\\Database\\\Driver\\\Postgres\x27/g'  /path/to/file.ext

或者，对于foo-bar示例：

sed -i 's/\x27driver\x27 => \x27Cake\\\Database\\\Driver\\\Mysql\x27/\x27foo\x27 => \x27barx27/g'  /path/to/file.ext

谢谢大家，特别是@Kent和@anubhava

在sed中逃避单引号

6 个答案: