在sed中轉義單引號

Question

我有一個字符串：

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

我需要替換為：

'foo' => 'bar'

但是我的sed命令似乎都不正確，例如

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

要么

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

我該如何進行替換？

謝謝！

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\\\\\\\\來匹配\\並匹配單引號，以定義一個變量，如上所示。

Answer 2

這對我使用GNU sed有用，但我不確定為什么它不可移植：

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

在雙引號內，可以直接使用單引號。 為了簡化sed行，我將路徑移至了變量。

Answer 3

這可以在此處進行快速測試：

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

Answer 4

您必須轉義反斜杠： \\ ：

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的人，只是在這里猜測。

Perl引擎處理器應該看到的內容：

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

命令處理器的單引號：

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

給命令處理器加雙引號：

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

Answer 6

給出的答案對我來說都不完全像寫的那樣，因此我將它們用作測試的靈感，並發現對我有用：

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，以foo-bar為例：

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

謝謝大家，特別是@Kent和@anubhava