摘要:
grep grep searches the named input FILEs (or standard input if no files are named, or if a single hyphen-minus (-) is given as file name) for lines co 阅读全文
摘要:
### sed sed - stream editor for filtering and transforming text; `sed`:利用脚本来处理、编辑文本文件; `格式`:sed [OPTION]... {script-only-if-no-other-script} [input-fi 阅读全文