交换文件中的行

Question

我有一个这样的文件：

DelegatedAdmin: cn=fb6190f7-4a33-4502-a2d5-dce8dc434570,ou=Named,ou=Identities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
dn: cn=311999,ou=Entities,ou=Active,ou=Vault<br />

DelegatedAdmin: cn=fb6190f7-4a33-4502-a2d5-dce8dc434570,ou=Named,ou=Identities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
dn: cn=948089,ou=Entities,ou=Active,ou=Vault<br />

DelegatedAdmin: cn=fb6190f7-4a33-4502-a2d5-dce8dc434570,ou=Named,ou=Identities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
dn: cn=947458,ou=Entities,ou=Active,ou=Vault<br />

DelegatedAdmin: cn=9776c3f8-f2ee-4b6c-a9a9-32d87b45f7c5,ou=Named,ou=Identities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
dn: cn=10717,ou=Entities,ou=Active,ou=Vault<br />

DelegatedAdmin: cn=e0a838f0-3d53-42e8-8dad-bd1d774381de,ou=Named,ou=Identities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
dn: cn=1500,ou=Entities,ou=Active,ou=Vault<br />

并且应该改为这样（交换第1行和第4行）

dn: cn=311999,ou=Entities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
DelegatedAdmin: cn=fb6190f7-4a33-4502-a2d5-dce8dc434570,ou=Named,ou=Identities,ou=Active,ou=Vault<br />

dn: cn=948089,ou=Entities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
DelegatedAdmin: cn=fb6190f7-4a33-4502-a2d5-dce8dc434570,ou=Named,ou=Identities,ou=Active,ou=Vault<br />

dn: cn=947458,ou=Entities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
DelegatedAdmin: cn=fb6190f7-4a33-4502-a2d5-dce8dc434570,ou=Named,ou=Identities,ou=Active,ou=Vault<br />

dn: cn=10717,ou=Entities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
DelegatedAdmin: cn=9776c3f8-f2ee-4b6c-a9a9-32d87b45f7c5,ou=Named,ou=Identities,ou=Active,ou=Vault<br />

dn: cn=1500,ou=Entities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
DelegatedAdmin: cn=e0a838f0-3d53-42e8-8dad-bd1d774381de,ou=Named,ou=Identities,ou=Active,ou=Vault<br />

这个怎么做？

Answer 1

也试试

awk '{print $4, $2, $3, $1}' RS= FS="\n" OFS="\n" ORS="\n\n"  file
dn: cn=311999,ou=Entities,ou=Active,ou=Vault<br />
changetype: modify<br />
delete: DelegatedAdmin<br />
DelegatedAdmin: cn=fb6190f7-4a33-4502-a2d5-dce8dc434570,ou=Named,ou=Identities,ou=Active,ou=Vault<br />

使用RS=<empty>由空行分隔的多行记录，字段分隔符<NL>使行 = 字段，然后按所需的顺序打印它们。