How can I replace a string in a file if line starts with another string using sed?
如果使用sed使用另一个字符串开始行，如何替换文件中的字符串？
For example, replace this line:
例如，替换此行：
connection = sqlite://keystone:[YOURPASSWORD]@[YOURIP]/keystone
With this line:
有了这条线：
connection = mysql://keystone:password@10.1.1.10/keystone
4 个解决方案
#1
14
Answer:
回答：
sed '/^start_string/s/search_string/replace_string/'
Information at http://www.gnu.org/software/sed/manual/sed.html#Addresses
有关http://www.gnu.org/software/sed/manual/sed.html#Addresses的信息
#2
5
You can do simply this :
你可以做到这一点：
sed -ri 's/sqlite/mysql/g' YOURFILE
#3
2
If you want to change an entire line which starts with a pattern and ends with enything else, you can use command c description Example
如果要更改以模式开头并以其他方式结束的整行，可以使用命令c description示例
sed -i '/^connection = sqlite/c\connection = mysql://keystone:password@10.1.1.10/keystone' your_file
#4
1
sed '/^string1/ { s,string2,string3, }' file
This will replace string2 with string3 on all the lines that start with string1.
这将在以string1开头的所有行上用string3替换string2。
#1
14
Answer:
回答：
sed '/^start_string/s/search_string/replace_string/'
Information at http://www.gnu.org/software/sed/manual/sed.html#Addresses
有关http://www.gnu.org/software/sed/manual/sed.html#Addresses的信息
#2
5
You can do simply this :
你可以做到这一点：
sed -ri 's/sqlite/mysql/g' YOURFILE
#3
2
If you want to change an entire line which starts with a pattern and ends with enything else, you can use command c description Example
如果要更改以模式开头并以其他方式结束的整行，可以使用命令c description示例
sed -i '/^connection = sqlite/c\connection = mysql://keystone:password@10.1.1.10/keystone' your_file
#4
1
sed '/^string1/ { s,string2,string3, }' file
This will replace string2 with string3 on all the lines that start with string1.
这将在以string1开头的所有行上用string3替换string2。