Question

我是bash脚本的初学者。我有一个包含内容的文件：

Section1 =
 (DESCRIPTION =
 (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(HOST = host1)(PORT = 1500)))
 (CONNECT_DATA =
  (SERVICE_NAME = service1)
 )
)

Section2 =
 (DESCRIPTION =
 (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(HOST = host1)(PORT = 1500)))
 (CONNECT_DATA =
  (SERVICE_NAME = service1)
 )
)

我想将Section1中的端口号更改为1600，并将“HOST = host1”替换为“Machine = machine2”。这是更改后的文件：

Section1 =
 (DESCRIPTION =
 (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(HOST = host1)(PORT = 1600)))
 (CONNECT_DATA =
  (SERVICE_NAME = service1)
 )
)

Section2 =
 (DESCRIPTION =
 (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(Machine = machine2)(PORT = 1500)))
 (CONNECT_DATA =
  (SERVICE_NAME = service1)
 )
)

由于

Answer 1

将awk与空记录分隔符一起使用：

awk -v RS= -v ORS='\n\n' '/^Section1/{sub(/PORT *= *[0-9]+/, "PORT = 1600")} 
           /^Section2/{sub(/HOST *= *host1/, "Machine = machine2")} 1' file

<强>输出：

Section1 =
 (DESCRIPTION =
 (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(HOST = host1)(PORT = 1600)))
 (CONNECT_DATA =
  (SERVICE_NAME = service1)
 )
)

Section2 =
 (DESCRIPTION =
 (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(Machine = machine2)(PORT = 1500)))
 (CONNECT_DATA =
  (SERVICE_NAME = service1)
 )
)

Answer 2

这是一个翻译要求的机械过程。

sed -e '/^Section1 =/,/^)/{ s/(PORT = [0-9]*)/(PORT = 1600)/; }' \
    -e '/^Section2 =/,/^)/{ s/(HOST = host1)/(Machine = machine2)/; }'

在第1部分＆＃39;中，使用PORT = 1600更改PORT值（无论原始值如何）。在第2部分＆＃39;中，将HOST = host1部分更改为新值。如果你有GNU sed，分号是可选的;如果您使用BSD（Mac OS X）sed，则必须使用它们。因此，这应该适用于两者。

建议替换文件中的一些文本

2 个答案: