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                # Linux passwd命令 Linux passwd命令用來更改使用者的密碼 ### 語法 ``` passwd [-k] [-l] [-u [-f]] [-d] [-S] [username] ``` **必要參數**: * -d 刪除密碼 * -f 強制執行 * -k 更新只能發送在過期之后 * -l 停止賬號使用 * -S 顯示密碼信息 * -u 啟用已被停止的賬戶 * -x 設置密碼的有效期 * -g 修改群組密碼 * -i 過期后停止用戶賬號 **選擇參數**: * --help 顯示幫助信息 * --version 顯示版本信息 ### 實例 修改用戶密碼 ``` # passwd w3cschool //設置w3cschool用戶的密碼 Enter new UNIX password: //輸入新密碼,輸入的密碼無回顯 Retype new UNIX password: //確認密碼 passwd: password updated successfully # ``` 顯示賬號密碼信息 ``` # passwd -S w3cschool w3cschool P 05/13/2010 0 99999 7 -1 ``` 刪除用戶密碼 ``` # passwd -d lx138 passwd: password expiry information changed. ```
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