sed删除所有包含密码一词的行。但是不要保留空行

Question

My file has lines

Database Name:Mydb
DatabaseServer:DbServer
Password:Example
Username:User1

Database Name:Mydb1
DatabaseServer:DbServer1
Password:Example1
Username:User11

I used sed -i "s/password. //gI" file but that is leaving an empty line(in place of password. ) which i don't want.

Desired result:

Database Name:Mydb
DatabaseServer:DbServer
Username:User1

Database Name:Mydb1
DatabaseServer:DbServer1
Username:User11

Answer 1

试试看：

sed -i '/Password:/d' file

Answer 2

Solution 1st: grep here to help.

grep -v '^Password'  Input_file

In case you need to save into same Input_file then you could following.

grep -v '^Password'  Input_file > temp && mv temp Input_file

Solution 2nd: Using awk .

awk '!/^Password/' Input_file > temp_file && mv temp_file Input_file