bash脚本中的条件字符串替换

Question

我对bash脚本非常陌生，并且尝试对大型CSV文件中的数据进行大量更新。

文件结构为：

date|id|id|000000|string_type|0|0|0.00|0|0|0|0|0|0|string_subtype.

更改的是string_subtype，有时是string_type。

当我仅使用以下方式更改string_subtype值时：

sed -i 's/string_subtype_old/string_subtype_new/g' $file

没有问题。

问题是当我同时更改单个行的string_type和sub_type时，sub_type更改为具有相同string_type的所有记录

例

从

date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeA
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeA
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeB
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeB
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeC
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeC

至

date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeD
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeD
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeE
date|id|id|000000|typeA|0|0|0.00|0|0|0|0|0|0|subtypeE
date|id|id|000000|typeB|0|0|0.00|0|0|0|0|0|0|subtypeF
date|id|id|000000|typeB|0|0|0.00|0|0|0|0|0|0|subtypeF

我尝试过

sed -e 's/string_type_old/string_type_new/g' -e 's/string_subtype_old/string_subtype_new/g' $file

但是所有string_type_old都改变了！

有什么建议么？

- 编辑 -

真实的例子：

从

2014-01-01|000fc55|297633835|122350|WHOME|0|0|0.00|2|0|0|0|0|0|WHOME_CLEAN
2014-01-01|000fc56|297633835|122377|WHOME|0|0|0.00|2|0|0|0|0|0|WHOME_STORA
2014-01-01|000fc57|297633835|122378|WHOME|0|0|0.00|2|0|0|0|0|0|WHOME_OTHER
2014-01-01|000fc58|297633835|122428|WHOME|0|0|0.00|2|0|0|0|0|0|WHOME_KGADG
2014-01-01|000fc59|297633835|120776|WHOME|1|0|0.00|0|0|0|0|0|0|WFOOD_GOURT

至

2014-01-01|000fc55|297633835|122350|WHOME|0|0|0.00|2|0|0|0|0|0|W_CLEAN
2014-01-01|000fc56|297633835|122377|WHOME|0|0|0.00|2|0|0|0|0|0|W_STORA
2014-01-01|000fc57|297633835|122378|WHOME|0|0|0.00|2|0|0|0|0|0|W_OTHER
2014-01-01|000fc58|297633835|122428|WGADG|0|0|0.00|2|0|0|0|0|0|W_KGADG
2014-01-01|000fc59|297633835|120776|WFOOD|1|0|0.00|0|0|0|0|0|0|W_GOURT

原料1至3很简单

sed -i's / WHOME_CLEAN / W_CLEAN / g'$ file

sed -i's / WHOME_STORA / W_STORA / g'$ file

sed -i's / WHOME_OTHER / W_OTHER / g'$ file

在Raw 4和Raw 5中，我需要在WGADG或WFOOD中更改主类型WHOME。

同

sed -e's / WHOME / WGADG / g'-e's / WHOME_KGADG / W_KGADG / g'$ file

WHOME的所有原始数据都已更改！ 我需要一些命令来过滤grep，仅过滤type == WHOME && subtype == WGADG的raws

Answer 1

您只能指定一次更改子类型，如下所示：

sed '0,/string_subtype_old/s/string_subtype_old/string_subtype_new/'