Memo CentOS uses SED to modify files

#全文搜索替换

Sed-i ' s/to search for string/replace string/g ' file name

#全文删除特定字串

Sed-i '/content to be deleted/d ' file name

#全文删除没有任何内容的空行 (that is, even the space does not press the type of direct carriage, such as a return to the kind of empty line. The use of the regular expression, ^1 said to start with 1, 3$ to the end of 3, if only ^$ is specifically to indicate that even the space does not have a carriage return line)

Sed-i '/^$/d ' file name

Memo CentOS uses SED to modify files