使用 AWK 命令查找和替换

Question

我有一个名为 sso_med.txt 的文件，喜欢

197: insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values ('502683504',15,current_date, '502264160', current_date, '502264160'); 
198: insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values ('502683504',16,current_date, '502264160', current_date, '502264160'); 
199: insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values ('502689031',15,current_date, '502264160', current_date, '502264160');

但我想让它像

insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values ('502683504',15,current_date, '502264160', current_date, '502264160'); 
insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values ('502683504',16,current_date, '502264160', current_date, '502264160'); 
insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values ('502689031',15,current_date, '502264160', current_date, '502264160');

我正在尝试 awk 命令

awk '{gsub(/^\d+:\s/,""); print}' sso_med.txt

但是 working.Any 不知道我在正则表达式中做错了什么

Answer 1

尝试

awk '{gsub(/^[0-9]+: /,"")}1' file

Answer 2

也试试 sed 版本：

sed 's/^[0-9]*: //'  Input_file

将起始数字从 0 替换为 9 然后 : 到 space 为 NULL 并打印其余部分。

Answer 3

为避免删除字符串中其他地方的相似模式，请使用 sub，它仅替换模式的第一个实例：

# explanation of regex: "^"=line starts with pattern, "[0-9]+"=multiple numbers, ": "=colon and single space
awk '{sub(/^[0-9]+: /, "", [=10=]); print [=10=]}'

示例：

$ echo '197: insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values ('502683504',15,current_date, '502264160', current_date, '502264160');' | awk '{sub(/^[0-9]+: /, "", [=11=]); print [=11=]}'

结果：

insert into brs.user_components (user_name, component_id, created_date, created_by, last_updated_date,last_updated_by) values (502683504,15,current_date, 502264160, current_date, 502264160);

使用 AWK 命令查找和替换

Find and replace with AWK command

unix

macos

awk

gawk

gsub