4.1-用户信息
id root
cat /etc/passwd | head -1
# 解释器 链接 TODO
# id system 1-999 user 1000-65535
cat /etc/passwd | tail -3
cat /etc/shadow # 用户密码
id root
cat /etc/passwd | head -1
# 解释器 链接 TODO
# id system 1-999 user 1000-65535
cat /etc/passwd | tail -3
cat /etc/shadow # 用户密码