Question

我有一个名为sso_med.txt的文件，如

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');

我正在尝试使用awk命令

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

但它不起作用。任何想法我在Regex中做错了什么

Answer 1

试

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

Answer 2

尝试sed版本：

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

将起始数字从0到9替换，然后：用空格替换空格并打印其余部分。

Answer 3

为避免删除字符串中其他位置的类似模式，请使用sub，它只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]+: /, "", $0); print $0}'

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]+: /, "", $0); print $0}'

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);

查找并替换为AWK命令

3 个答案: