摘要：
The sed command is a stream editor used for filtering and transforming text. sed 'command' file Create and view the initial content of sample.txt: ech 阅读全文
摘要：
The awk command is a powerful text processing tool used for pattern scanning and processing. // exammple.txt Hello World This is a sample file Bash sc 阅读全文
摘要：
The grep command searches for patterns within files and prints matching lines. grep [options] [content] [file] Search for a pattern in a file: grep "p 阅读全文