这篇文章展示了数据库系统的学习记录

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这篇文章展示了数据库系统的学习记录

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L3 Demo Task1 ps ps -a ps -l Task 2: ls: list the files in the current directory ls -l: list the files in the current directory in long format ls -a: list the files in the current directory, including the hidden files ls -t: list the files in the current directory, sorted by time ls -lat: list the files in the current directory, including the hidden files, in long format, sorted by time cd: change the current directory