## Hadoop Shell命令 ## 目录 1 FS Shell 3 1.1 cat 3 1.2 chgrp 3 1.3 chmod 3 1.4 chown 4 1.5 copyFromLocal 4 1.6 copyToLocal 4 1.7 cp 4 1.8 du 4 1.9 dus 5 1.10 expunge 5 1.11 get 5 改变文件所属的组。使用-R将使改变在目录结构下递归进行。命令的使用者必须是文件的所有者或者超级用户。更多的信息请参见HDFS权限用户指南。 #### 1.3. mod 使用方法：hadoop fs -chmod $ [-R] $ URI $ [URI\cdots] $ 改变文件的

Entry保存在哪? • ACL的表示 • 内存中的ACL 是如何与具体的 Inode 相关联 • 如何存储和获取ACL信息 • Inode权限校验 • chmod、chown、setfacl、getfacl接口文件系统自己如何实现 • 结论： • 参考文献： ## 一、 Curvefs测试 代码：https://github.com/cw123 denied # chmod 777 root@pubbetal-nostest2:/tmp/fsmount# chmod 777 hello.txt root@pubbetal-nostest2:/tmp/fsmount# ls -l total 0 -rwxrwxrwx 0 root root 6 Feb 17 2090 hello.txt # after chmod wanghai 以所有者的身份运行。权限所显示的位置在文件的属主的权限位中的执行权限位上，如果属主本来就具有执行权限，则显示为“s”，如果本来没有执行权限，则显示为“S”。 # SUID # chmod u+s FILE # chmod 4755 FILE wanghai01@pubbetal-nostest2:~/tmp$ ls -l total 0 -rwxr-xr-x 1 wanghai01 neteaseusers

20. tail • 21. WC • 22. grep • 23. sort • 24. uniq • 25. diff • 26. echo • 27. chown • 28. chmod • 29. umask • 30. du • 31. df • 32. basename • 33. dirname • 34. ps • 35. top • 36. kill • ddhostnamelnpssleepunlinkchmoddfkilllspwdsttywait4pathcp also just change the group of a file using the chgrp command: chgrp ### 28. chmod Every file in the Linux / macOS Operating Systems (and UNIX systems in general) has 3 permissions:

|gunzip| |tar| |alias| |cat| |less| |tail| |wc| |grep| |sort| |unique\_id| |---| |diff| |echo| |chown| |chmod| |mask| |du| |df| |basename| |dirname| |ps| |top| |kill| |killall| |jobs| |bg| |fg| |type| |which| command: chgrp ## chmod Every file in the Linux / macOS Operating Systems (and UNIX systems in general) has 3 permissions: permissions: rw-, r--, r-x, and so on. You can change the permissions given to a file using the chmod command. chmod can be used in 2 ways. The first is using symbolic arguments, the second is using numeric

group ..... 32 5.11 Adding new group to an user ..... 32 6 File permissions ..... 33 6.1 chmod command ..... 33 6.2 PATH variable ..... 34 6.3 ~/.bash_profile file ..... 34 6.4 .bashrc file format along with the $ chmod $ command to change permissions of any file or directory. ### 6.1 chmod command chmod is the command which changes the file mode bits. Through chmod command one can alter and execute) to file system objects (i.e files and directories). If we look at the command closely chmod is the abbreviation of change mode. A few examples are given below. $ echo "hello" > myfile

you must run 'chmod +x /etc/rc.d/rc.local' to that this script will be executed during boot. ### 6. 然后给该文件添加可执行权限 命令 chmod +x /etc/rc.d/rc.local [root@localhost ~]# chmod +x /etc/rc.d/rc.local ③修改文件权限 #chmod 775 文件名 //把文件的权限改为 775（rwxrwxr-x） #chmod +x 文件名 //增加文件的 x 权限，即每一组都加上 x 执行权限 #chmod g+w 文件名 //增加组成员的 w 写权限，g 代表文件属组 group #chmod u+x 文件名 //增加文件拥有者的 x 执行权限，u 代表拥有者 user #chmod o-w sticky-bit 值为 1 ## 特殊权限的设置 #chmod 4755 文件名 //添加 suid 权限，（其他 3 个权限为 755） #chmod u+s 文件名 //添加 suid 权限，以字母的形式添加 #chmod g+s 文件名 //添加 sgid 权限 #chmod o+t 文件名 //添加 sticky-bit 权限 #chmod 0755 文件名 //设置权限为 0755，无特殊权限

details Deleting a user Adding a new group Adding new group to an user File permissions chmod command PATH variable ~.bash_profile file .bashrc file /etc/profile file which command format along with the $ chmod $ command to change permissions of any file or directory. ## chmod command chmod is the command which changes the file mode bits. Through chmod command one can alter the and execute) to file system objects (i.e files and directories). If we look at the command closely chmod is the abbreviation of change mode. A few examples are given below. $ echo "hello" > myfile

| grep etcd Run the below command (based on the etcd data directory found above). For example, chmod 700 /var/lib/etcd ##### Audit Script: 1.1.11.sh #!/bin/bash -e etcd_bin= {1} test_dir= (ps -ef | Run the below command (based on the file location on your system) on the master node. For example, chmod -R 644 /etc/kubernetes/ssl Audit Script: check_files_permissions.sh #!/usr/bin/env bash # This Run the below command (based on the file location on your system) on the master node. For example, chmod -R 600 /etc/kubernetes/ssl/certs/serverca ##### Audit Script: 1.1.21.sh #!/bin/bash -e check_d

| grep etcd Run the below command (based on the etcd data directory found above). For example, chmod 700 /var/lib/etcd ##### Audit Script: 1.1.11.sh #!/bin/bash -e etcd_bin= {1} test_dir= (ps -ef | Run the below command (based on the file location on your system) on the master node. For example, chmod -R 644 /etc/kubernetes/ssl Audit Script: check_files_permissions.sh #!/usr/bin/env bash # This Run the below command (based on the file location on your system) on the master node. For example, chmod -R 600 /etc/kubernetes/ssl/certs/serverca ##### Audit Script: 1.1.21.sh #!/bin/bash -e check_d

-#LO https://github.com/FISCO-BCOS/FISCO-BCOS/releases/download/v2.9.0/build_chain.sh && chmod u+x build_chain.sh ## 注解 - 如果因为网络问题导致长时间无法下载build_chain.sh脚本，请尝试 curl -#LO https://osp-1257653870 70.cos.ap-guangzhou.myqcloud.com/FISCO-BCOS/FISCO-BCOS/releases/v2.9.0/build_chain.sh && chmod u+x build_chain.sh  -#LO https://github.com/FISCO-BCOS/FISCO-BCOS/releases/download/v2.6.0/bui ld_chain.sh && chmod u+x build_chain.sh ############################################################ 100.0% ########