chmod

Linux 文件权限详解

主宰稳场 提交于 2019-11-26 12:56:54
极力推荐文章:欢迎收藏 Android 干货分享 阅读五分钟,每日十点,和您一起终身学习,这里是程序员Android 本篇文章主要介绍 Android 开发中的部分知识点,通过阅读本篇文章,您将收获以下内容: 一、使用ls -l 显示文件的详细信息 二、Linux下的文件权限分组 三、drwx 代表的意思 四、修改文件,用户权限方法 一、使用ls -l 显示文件的详细信息 ls -l 是用来显示文件的详细信息,举例如下: wangjie@ubuntu:/opt/qcom$ ls -l total 12 drwxr-xr-x 7 root root 4096 Jun 3 15:29 ARM_Compiler_5 drwxr-xr-x 4 root root 4096 Jun 3 15:43 HEXAGON_Tools drwxr-xr-x 9 root root 4096 Jun 3 15:48 LLVM 二、Linux下的文件权限分组 Linux 下权限共分三组,分别如下: 1.文件所有者 2.文件所有者所在的组 3.其他用户组 举例解释如下: drwxr-xr-x 4 root root 4096 Jun 3 15:43 HEXAGON_Tools 三、drwx 代表的意思 名称 简称 代表意义 数值 d dir 目录 - r read 读文件权限 4 w write 写文件权限

centos 7添加用户

六眼飞鱼酱① 提交于 2019-11-26 12:28:46
1,新建用户 adduser xxxx passwd xxxx(修改密码) 输入密码 2,设置授权 修改授权文件 chmod -v u+w /etc/sudoers 编辑 vi /etc/sudoers 撤销授权文件chmod -v u-w /etc/sudoers 来源: https://blog.csdn.net/f335830104/article/details/98853355

How do you do a simple “chmod +x” from within python?

痴心易碎 提交于 2019-11-26 10:24:24
问题 I want to create a file from within a python script that is executable. import os import stat os.chmod(\'somefile\', stat.S_IEXEC) it appears os.chmod doesn\'t \'add\' permissions the way unix chmod does. With the last line commented out, the file has the filemode -rw-r--r-- , with it not commented out, the file mode is ---x------ . How can I just add the u+x flag while keeping the rest of the modes intact? 回答1: Use os.stat() to get the current permissions, use | to or the bits together, and

jump用户管理命令

|▌冷眼眸甩不掉的悲伤 提交于 2019-11-26 07:52:51
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa 手动拷贝id_rsa.pub的内容到其他机器 #跳板机新建user并拷贝公钥: useradd leixiaolong #install home Dir auto cd /home/leixiaolong mkdir .ssh cd .ssh touch authorized_keys chmod 600 authorized_keys chown -R leixiaolong: leixiaolong ../.ssh #Jumpserver系统用户sudo -i权限其实是写在/etc/sudoers文件里 sudoedit /etc/sudoers 1/ 可以sudo的配置 feng.feng ALL=(ALL) NOPASSWD: /bin/whoami,/bin/su,/bin/bash,!/bin/tcsh,!/usr/bin/passwd,!/usr/bin/passwd root,!/bin/vim /etc/sudoers,!/usr/bin/vim /etc/sudoers,!/usr/sbin/visudo,!/usr/bin/sudo -i,!/bin/bi /etc/ssh/*,!/bin/chmod 777 /etc/*,!/bin/chmod 777 *,!/bin

Linux权限

拟墨画扇 提交于 2019-11-26 05:29:02
回到顶部(go to top) 权限简介 Linux系统上对文件的权限有着严格的控制,用于如果相对某个文件执行某种操作,必须具有对应的权限方可执行成功。 Linux下文件的权限类型一般包括读,写,执行。对应字母为 r、w、x。 Linux下权限的粒度有 拥有者 、群组 、其它组 三种。每个文件都可以针对三个粒度,设置不同的rwx(读写执行)权限。通常情况下,一个文件只能归属于一个用户和组, 如果其它的用户想有这个文件的权限,则可以将该用户加入具备权限的群组,一个用户可以同时归属于多个组。 Linux上通常使用chmod命令对文件的权限进行设置和更改。 回到顶部(go to top) 一、快速入门 更改文件权限 (chmod命令) 一般使用格式 chmod [可选项] <mode> <file...> 可选项: -c, --changes like verbose but report only when a change is made (若该档案权限确实已经更改,才显示其更改动作) -f, --silent, --quiet suppress most error messages (若该档案权限无法被更改也不要显示错误讯息) -v, --verbose output a diagnostic for every file processed(显示权限变更的详细资料) --no

Linux权限

狂风中的少年 提交于 2019-11-26 04:56:51
回到顶部(go to top) 权限简介 Linux系统上对文件的权限有着严格的控制,用于如果相对某个文件执行某种操作,必须具有对应的权限方可执行成功。 Linux下文件的权限类型一般包括读,写,执行。对应字母为 r、w、x。 Linux下权限的粒度有 拥有者 、群组 、其它组 三种。每个文件都可以针对三个粒度,设置不同的rwx(读写执行)权限。通常情况下,一个文件只能归属于一个用户和组, 如果其它的用户想有这个文件的权限,则可以将该用户加入具备权限的群组,一个用户可以同时归属于多个组。 Linux上通常使用chmod命令对文件的权限进行设置和更改。 回到顶部(go to top) 一、快速入门 更改文件权限 (chmod命令) 一般使用格式 chmod [可选项] <mode> <file...> 可选项: -c, --changes like verbose but report only when a change is made (若该档案权限确实已经更改,才显示其更改动作) -f, --silent, --quiet suppress most error messages (若该档案权限无法被更改也不要显示错误讯息) -v, --verbose output a diagnostic for every file processed(显示权限变更的详细资料) --no

How do I give PHP write access to a directory?

自古美人都是妖i 提交于 2019-11-26 04:39:41
问题 I\'m trying to use PHP to create a file, but it isn\'t working. I am assuming this is because it doesn\'t have write access (it\'s always been the problem before). I tried to test if this was the problem by making the folder chmod 0777, but that just ended up making every script in that directory return a 500 error message until I changed it back. How do I give PHP write access to my file system so it can a create a file? Edit: It is hosted on Hostgator shared hosting using Apache. Edit 2:

In a PHP / Apache / Linux context, why exactly is chmod 777 dangerous?

依然范特西╮ 提交于 2019-11-26 03:55:20
问题 Inspired by the discussion in this question, a maybe stupid question. We have all been taught that leaving directories or files on Linux-based web hosting with the permission level of 777 is a bad thing, and to set always as little permissions as necessary. I am now curious as to where exactly lies the danger of exploitation, specifically in a PHP / Apache context. After all, a PHP script file can be executed from the outside (i.e. through a call to the web server, and subsequently to the

Correct file permissions for WordPress [closed]

百般思念 提交于 2019-11-26 00:49:16
问题 I\'ve had a look over here but didn\'t find any details on the best file permissions. I also took a look at some of WordPress\'s form\'s questions over here too but anybody that suggests 777 obviously needs a little lesson in security. In short my question is this. What permissions should I have for the following: root folder storing all the WordPress content wp-admin wp-content wp-includes and then all the files in each of those folders? 回答1: When you setup WP you (the webserver) may need

How do I change permissions for a folder and all of its subfolders and files in one step in Linux? [closed]

亡梦爱人 提交于 2019-11-26 00:18:29
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I would like to change permissions of a folder and all its sub folders and files in one step (command) in Linux. I have already tried the below command but it works only for the mentioned folder: chmod 775 /opt/lampp/htdocs Is there a way to set chmod 755 for /opt/lampp/htdocs and all of its content including