我有一个文件，对于每一行，我需要替换所有逗号except the last one between two equal sign。任何人都可以帮忙。
（首选sed命令且无循环条件）
文件数据->>
STREET:1:1=Zwaneweg 23, Box 0001, PIN002,TOWN.COUNTRY:1:1=BE/Schilde
应该是->>
STREET:1:1=Zwaneweg 23? Box 0001? PIN002,TOWN.COUNTRY:1:1=BE/Schilde
答案 0 :(得分：0)
尝试这样的事情：
uuid: 435345-345ty-4354-35345f-534534fdf
langcode: en
status: true
dependencies:
config:
- field.storage.node.field_tags
- node.type.article
module:
- node
- rest
- serialization
- user
id: test_rest_view
label: 'test rest view'
module: views
description: ''
tag: ''
base_table: node_field_data
base_field: nid
core: 8.x
display:
default:
display_plugin: default
id: default
display_title: Master
position: 0
display_options:
access:
type: perm
options:
perm: 'access content'
cache:
type: tag
options: { }
query:
type: views_query
options:
disable_sql_rewrite: false
distinct: false
replica: false
query_comment: ''
query_tags: { }
exposed_form:
type: basic
options:
submit_button: Apply
reset_button: false
reset_button_label: Reset
exposed_sorts_label: 'Sort by'
expose_sort_order: true
sort_asc_label: Asc
sort_desc_label: Desc
pager:
type: mini
options:
items_per_page: 10
offset: 0
id: 0
total_pages: null
expose:
items_per_page: false
items_per_page_label: 'Items per page'
items_per_page_options: '5, 10, 25, 50'
items_per_page_options_all: false
items_per_page_options_all_label: '- All -'
offset: false
offset_label: Offset
tags:
previous: ‹‹
next: ››
style:
type: serializer
row:
type: fields
options:
inline: { }
separator: ''
hide_empty: false
default_field_elements: true
fields:
title:
id: title
table: node_field_data
field: title
relationship: none
group_type: group
admin_label: ''
label: ''
exclude: false
alter:
alter_text: false
text: ''
make_link: false
path: ''
absolute: false
external: false
replace_spaces: false
path_case: none
trim_whitespace: false
alt: ''
rel: ''
link_class: ''
prefix: ''
suffix: ''
target: ''
nl2br: false
max_length: 0
word_boundary: false
ellipsis: false
more_link: false
more_link_text: ''
more_link_path: ''
strip_tags: false
trim: false
preserve_tags: ''
html: false
element_type: ''
element_class: ''
element_label_type: ''
element_label_class: ''
element_label_colon: false
element_wrapper_type: ''
element_wrapper_class: ''
element_default_classes: true
empty: ''
hide_empty: false
empty_zero: false
hide_alter_empty: true
click_sort_column: value
type: string
settings:
link_to_entity: false
group_column: value
group_columns: { }
group_rows: true
delta_limit: 0
delta_offset: 0
delta_reversed: false
delta_first_last: false
multi_type: separator
separator: ', '
field_api_classes: false
entity_type: node
entity_field: title
plugin_id: field
field_tags:
id: field_tags
table: node__field_tags
field: field_tags
relationship: none
group_type: group
admin_label: ''
label: ''
exclude: false
alter:
alter_text: false
text: ''
make_link: false
path: ''
absolute: false
external: false
replace_spaces: false
path_case: none
trim_whitespace: false
alt: ''
rel: ''
link_class: ''
prefix: ''
suffix: ''
target: ''
nl2br: false
max_length: 0
word_boundary: true
ellipsis: true
more_link: false
more_link_text: ''
more_link_path: ''
strip_tags: false
trim: false
preserve_tags: ''
html: false
element_type: ''
element_class: ''
element_label_type: ''
element_label_class: ''
element_label_colon: false
element_wrapper_type: ''
element_wrapper_class: ''
element_default_classes: true
empty: ''
hide_empty: false
empty_zero: false
hide_alter_empty: true
click_sort_column: target_id
type: entity_reference_label
settings:
link: false
group_column: target_id
group_columns: { }
group_rows: true
delta_limit: 0
delta_offset: 0
delta_reversed: false
delta_first_last: false
multi_type: separator
separator: ', '
field_api_classes: false
plugin_id: field
filters:
status:
value: '1'
table: node_field_data
field: status
plugin_id: boolean
entity_type: node
entity_field: status
id: status
expose:
operator: ''
group: 1
type:
id: type
table: node_field_data
field: type
relationship: none
group_type: group
admin_label: ''
operator: in
value:
article: article
group: 1
exposed: false
expose:
operator_id: ''
label: ''
description: ''
use_operator: false
operator: ''
identifier: ''
required: false
remember: false
multiple: false
remember_roles:
authenticated: authenticated
reduce: false
is_grouped: false
group_info:
label: ''
description: ''
identifier: ''
optional: true
widget: select
multiple: false
remember: false
default_group: All
default_group_multiple: { }
group_items: { }
entity_type: node
entity_field: type
plugin_id: bundle
sorts:
created:
id: created
table: node_field_data
field: created
order: DESC
entity_type: node
entity_field: created
plugin_id: date
relationship: none
group_type: group
admin_label: ''
exposed: false
expose:
label: ''
granularity: second
header: { }
footer: { }
empty: { }
relationships: { }
arguments: { }
display_extenders: { }
cache_metadata:
max-age: -1
contexts:
- 'languages:language_content'
- 'languages:language_interface'
- request_format
- url.query_args
- 'user.node_grants:view'
- user.permissions
tags:
- 'config:field.storage.node.field_tags'
rest_export_1:
display_plugin: rest_export
id: rest_export_1
display_title: 'REST export'
position: 1
display_options:
display_extenders: { }
path: testreset
pager:
type: some
options:
items_per_page: 10
offset: 0
style:
type: serializer
options:
formats:
json: json
row:
type: data_field
options:
field_options:
title:
alias: ''
raw_output: false
cache_metadata:
max-age: -1
contexts:
- 'languages:language_content'
- 'languages:language_interface'
- request_format
- 'user.node_grants:view'
- user.permissions
tags:
- 'config:field.storage.node.field_tags'
现在将mayankp@mayank:~/Documents$ cat tt.txt
STREET:1:1=Zwaneweg 23, Box 0001, PIN002,TOWN.COUNTRY:1:1=BE/Schilde
mayankp@mayank:~/Documents$ cat tt.txt| grep -o -P '(?<==).*(?==)'| rev |sed 's/,/?/2g' |rev > out.txt
mayankp@mayank:~/Documents/$ cat out.txt
Zwaneweg 23? Box 0001? PIN002,TOWN.COUNTRY:1:1
与tt.txt合并以保留丢失的数据。
out.txt答案 1 :(得分：0)
使用sed，您可以记住匹配并进行恢复。
当您只想替换倒数第二个逗号时，可以使用
sed -r 's/(=.*),(.*,.*=)/\1?\2/' inputfile
通配符是贪婪的，当等号之间有8个逗号时，第七个将被替换。
您可以告诉sed重复其指令，直到找不到匹配的标签。
标签：a插入替换的前面，并且用ta指示“ turnback”。命令变为
sed -r ':a;s/(=.*),(.*,.*=)/\1?\2/;ta' inputfile
当您有两个以上的等号时，您必须知道在哪里看。该命令将替换第一个蚂蚁的最后一个等号：
echo '1,a=2,b,b,b,=3,c=Only, this part, should have, the commas, except this one, replaced=5,e,e'|
sed -r ':a;s/(=.*),(.*,.*=)/\1?\2/;ta'
1,a=2?b?b?b?=3?c=Only? this part? should have? the commas? except this one, replaced=5,e,e
如果只希望在最后两个等号之间进行替换，则需要用等号.以外的所有内容替换通配符[^=]，这将使命令更难于阅读< / p>
echo '1,a=2,b,b,b,=3,c=Only, this part, should have, the commas, except this one, replaced=5,e,e'|
sed -r ':a;s/(=[^=]*),([^=]*,[^=]*=)([^=]*)$/\1?\2\3/;ta'
1,a=2,b,b,b,=3,c=Only? this part? should have? the commas? except this one, replaced=5,e,e