awk 根据列号 4 在每个 uniq 模式之前添加单词

Question

你好，我将如何在文件中 $4 列中每个新模式的开始和结束处指定所需的输出行数始终随着差异而变化。 OS 在 $4 列中键入

这对我不起作用

awk -v RS= '{[=10=] = "OS_PLATFORM_VALID_BEGIN\n"  "\nOS_PLATFORM_VALID_END"} 1'file
awk -v RS= '{[=10=] = "OS_PLATFORM_VALID_BEGIN\n" " "" " " " " "" "" "" ""\nOS_PLATFORM_VALID_END"} 1' file

以上对我不起作用

LIB SITE A LINUX X64 DC58 ROOM DC LOC 2.b
LIB SITE A LINUX X64 DC58 ROOM DC LOC 2.b
LIB SITE A OPENV X64 DC22 ROOM DC LOC 2.b
LIB SITE A OPENV X64 DC22 ROOM DC LOC 2.b
LIB SITE A OPENV X64 DC22 ROOM DC LOC 2.b
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
LIB SITE A OPENV X64 DC41 ROOM DF LOC 5.p
LIB SITE A OPENV X64 DC41 ROOM DF LOC 5.p
LIB SITE A OPENV X64 DC41 ROOM DF LOC 5.p

这应该是这样的：

OS_PLATFORM_VALID_BEGIN
LIB SITE A LINUX X64 DC58 ROOM DC LOC 2.b
LIB SITE A LINUX X64 DC58 ROOM DC LOC 2.b
OS_PLATFORM_VALID_END
OS_PLATFORM_VALID_BEGIN
LIB SITE A OPENV X64 DC22 ROOM DC LOC 2.b
LIB SITE A OPENV X64 DC22 ROOM DC LOC 2.b
LIB SITE A OPENV X64 DC22 ROOM DC LOC 2.b
OS_PLATFORM_VALID_END
OS_PLATFORM_VALID_BEGIN
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
LIB SITE A WIN9K X64 DC22 ROOM DC LOC 2.b
OS_PLATFORM_VALID_END
OS_PLATFORM_VALID_BEGIN
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
LIB SITE B RHEL X64 DC10 ROOM DE LOC 3.ma
OS_PLATFORM_VALID_END
OS_PLATFORM_VALID_BEGIN
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
LIB SITE B SUSE X64 DC10 ROOM DE LOC 3.ma
OS_PLATFORM_VALID_END
OS_PLATFORM_VALID_BEGIN
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
LIB SITE A LINUX X64 DC41 ROOM DF LOC 5.p
OS_PLATFORM_VALID_END
OS_PLATFORM_VALID_BEGIN
LIB SITE A OPENV X64 DC41 ROOM DF LOC 5.p
LIB SITE A OPENV X64 DC41 ROOM DF LOC 5.p
LIB SITE A OPENV X64 DC41 ROOM DF LOC 5.p
OS_PLATFORM_VALID_END

Answer 1

您可以使用

awk 'BEGIN{print "OS_PLATFORM_VALID_BEGIN"} 
    { if (!seen[]++ && NR>1) { 
        print "OS_PLATFORM_VALID_END" ORS "OS_PLATFORM_VALID_BEGIN" } 
    }1;
    END{print "OS_PLATFORM_VALID_END"}' file > outfile

见online awk demo

详情

BEGIN{print "OS_PLATFORM_VALID_BEGIN"} - 在脚本执行开始时，打印 OS_PLATFORM_VALID_BEGIN
{ if (!seen[]++ && NR>1) { print "OS_PLATFORM_VALID_END" ORS "OS_PLATFORM_VALID_BEGIN" } }1 - 如果字段 4 值出现异常并且它不是第一行，则打印 OS_PLATFORM_VALID_END 和 OS_PLATFORM_VALID_BEGIN 行，否则，只打印行 ( 1最后是默认的行输出触发构造）
END{print "OS_PLATFORM_VALID_END"} - OS_PLATFORM_VALID_END 打印在脚本末尾。

awk 根据列号 4 在每个 uniq 模式之前添加单词

awk add word before each uniq pattern based on column number 4

awk

add

pattern-matching