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首先创建示例文件$ cat demo_fileTHIS LINE IS THE 1ST UPPER CASE LINE IN THIS FILE.this line is the 1st lower case line in this file.This Line Has All Its First Character Of The Word With Upper Case....

Unix Sed Introduction sed is a “non-interactive” stream-oriented editor. Since its an “non-interactive” it can be used to automate editing if desired. The name sed is an abbreviation for stream ed...

“p” command prints the buffer (remember to use -n option with “p”)“d” command is just opposite, its for deletion. ‘d’ will delete the pattern space buffer and immediately starts the next cycle.S...

Syntax:#sed -e 'command' -e 'command' filenameNote: -e option is optional for sed with single command. sed will execute the each set of command while processing input from the pattern buffer.让我们...

Sed reads line by line, removes any trailing new lines, places a line in a pattern space buffer, process as per the given commands and prints the pattern space.n case, if you want to delete all the ...

As its name implies, sed hold buffer is used to save all or part of the sed pattern space for subsequent retrieval. The contents of the pattern space can be copied to the hold space, then back again...