Operation and Maintenance
Linux Operation and Maintenance
How to delete a line of content in linux
How to delete a line of content in linux
In Linux, you can use the sed command to delete a specified line of content. This command can replace, delete, add, select, etc. data lines. When the parameter is set to "d", you can delete the line. The content, the syntax is "sed 'the specified row value d' that needs to be deleted".
#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.
How to delete a line of content in Linux
sed is a stream editor. It is a very good tool for text processing and can perfectly Used with regular expressions, the function is extraordinary.
During processing, the currently processed line is stored in a temporary buffer, called "pattern space", and then the sed command is used to process the content in the buffer. After the processing is completed, the buffer content is sent to the screen. Then process the next line, and repeat until the end of the file.
The file contents are not changed unless you use redirection to store the output. Sed is mainly used to automatically edit one or more files. It can perform specific tasks such as replacing, deleting, adding, and selecting data lines, simplifying repeated operations on files, and writing conversion programs.
The Linux sed command uses scripts to process text files.
sed can process and edit text files according to the instructions of the script.
Sed is mainly used to automatically edit one or more files, simplify repeated operations on files, write conversion programs, etc.
The syntax is:
sed [-hnV][-e<script>][-f<script文件>][文本文件]
The parameters are as follows:
- ##-e
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