chmod is used to change the commonly used read, write, and execute permissions on files. It can change these permission bits for the file owner, the file's group owner, and everyone else. It can also change the more esoteric ‘permissions’ (attributes, reall) like set-user-ID, set-group-ID, and ...

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chmod wont work - no error message

Everytime I try to change the permissions of a file with chmod on my Ubuntu with a command like chmod 744 /media/DATEN/Dokumente/Coding/Python/DirFileFuncts.py it doesnt work. I tried octal and =rwx ...
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How to change the permission and group-owner of a file at the same time

For changing file permission, I know I could use chmod. For changing group-owner, I could use chgrp. However, if I want to change both permission and owner at the same time, any command I could use on ...
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528 views

chmod and chown not working in sudo called script

Based on this Serverfault question, my git user has permission in sudoers to run a wrapper script to move files into my webroot with git. Everything is working fine except for the chmod and chown ...
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172 views

chmod command to set a file as permission denied

I want my file not to be deleted by any user. Can I know the chmod mode command for the same? I need to get this kind of msg (rm ctl_model_fact.csv: Permission denied)
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741 views

How to make a path world-readable?

To make some item X world-readable, it is not enough for it to have the right permissions: each component of the absolute path leading to it must also have the right permissions. (My understanding, ...
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147 views

chmod allowing write when I am not setting it

I've got a perl script which systematically changes permissions. The first thing the script does is remove all permissions. It does this by calling chmod(from perl). I did this as I found the set guid ...
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523 views

External drive chmod does nothing

Why is it that I can do chmod on my files when they are on my laptops hard drive, but when i make files on my external drive, i can't change their access rights. I do: chmod 755 somefile, and on my ...
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4answers
965 views

chmod - change permissions on a file

I have a Python virtualenv, and the Python executable is located in the /bin directory. In this virtualenv I'll have to execute some unsafe code, that can damage my system. I tried to chmod a-r on the ...
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134 views

reliable way to give all read/write access recursively in CentOS 7

What is the most reliable way to give all users read/write privileges for a given directory and all of its subdirectories and files in CentOS 7? In an eclipse web application project that uses ...
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338 views

relation between chmod and sudo on an executable file

What is the relationship between chmod and sudo on an executable file for a user? Are the cases that "a user needs sudo to run an executable" the same as the cases that "chmod hasn't set the ...
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85 views

Putting two accounts in group not giving read access to group members

I have an Apache based web site and am trying to allow the user to upload files to a drop box on one machine and then have them transferred to another. So I form a group for two users: www-data which ...
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355 views

Permission error to access mounted directory in localhost

OK, I formatted my flash to ext4 file system, changed all the permissions to 777 and mounted it to /var/www/html/web. Now, when i access localhost/web it gives the following error: "You don't have ...
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329 views

Changed file access to read only but I can still write to the file. Why?

I am running a small embedded system built using buildroot. I have come across this strange behaviour when trying to set up my file permissions on the target device. To illustrate what confuses me I ...
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find . .[^.]* -type f -print0 | xargs -0 sudo chmod 664; does not work

I am using this command to set permissions for files recursively clime@vm6879 /srv/www-php/steeltrading $ find . .[^.]* -type f -print0 | xargs -0 sudo chmod 664 But after executing that command ...
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Find all directories, in which user has access to search and echo this directories in shell

I need to find all directories, in which user has access to search(command find) and echo this directories in shell. USER is read from ksh. for example: read user I know, if user want to use find ...
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201 views

is setting a 0 permission on a directory an effective way to protect its contents?

Let's say that permissions for user and group are set up correctly on a directory. Would a 0 permission for other on that directory provide effective access control for the directory's files and ...
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41 views

shell or perl script to check group have read privileges

ls -l drwx------ 8 ws web 1024 Apr 29 2013 abc drwxr-xr-x 8 ws web 1024 Oct 19 2011 def I need some script to find directories like abc which doesn't have read/execute permissions ...
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33 views

Linux Root group change chmod for root owned to 770

I'd like to have normal user account assigned to root group (which I've done already) and change mod of all files that are owned by root user to 770, If I understood it well in result of that every ...
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47 views

How to create a Samba share that is writable from Windows without 777 permissions?

I have a path on a Linux machine (Debian 8) which I want to share with Samba 4 to Windows computers (Win7 and 8 in a domain). In my smb.conf I did the following: [myshare] path = /path/to/share ...
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81 views

Sticky bit and users with sudo permission

Let's say I chmod 1777 a folder /opt/test and all files inside it as user user1. Hence user2 is able to update and edit files inside the /opt/test directory. When user2 operates via sudo, he's able ...
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54 views

File that is only readable with root privileges

I have a binary file that needs to run at startup on all accounts (including unprivileged user accounts), so a command to run it will be put into /etc/rc.local. The program itself will have only ...
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44 views

Still able to read file after changing permissions

I've made a file as root, and written a string in it. Now I've changed mode to "0" like this: root# ls -al transit/ total 4.0K ---------- 1 root root 6 Jan 5 18:15 27050 root# If I try to tail, ...
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303 views

Setting up permissions for common folder

I am trying to setup a little home network using Linux as the File Server and have run into a bit of problems w.r.t. to folder permissions that I can't seem to solve. The setup: An Ubuntu 14.04 ...
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463 views

Apply recursive chmod to files or folders only

I'd like to apply chmods to files and folders in one line, Basically: chmod 700 ./* -R # but only apply to folders chmod 600 ./* -R # but only apply to files Of course I searched google and read ...
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294 views

Why can user have lower permissions than group or other? Who can change them?

It is my understanding that the owner of a file user can have lower permissions than group or other. What is the justification for this? Can only root and the owner change the permissions on a ...
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273 views

Reverse a chmod command on a directory

Is there a way to undo a chmod command on a directory in CentOS ?
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trying to search inside chmod with command [duplicate]

I am trying to find commands with the word "symbolic" inside the contents If I type man chmod and /symbolic you can see that chmod command has the line of "new modes of the file will ...
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502 views

Equivalent of full control, modify and write in linux

What is the equivalent of assigning Full control, Modify and Write permission, in Windows, to a particular user and group, in Linux? chgrp, chmod and chown seems quite limited in this case.
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FS permission scenario

How can I achieve this files & folders permissions scenario: Consider these folder: Folder A: 640 root apache /var/www/A/ Folder www: 640 root apache /var/www/ and this linux user: id user1: ...
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2k views

Allow all group members to create directories and files

There are 2 users sftp_user apache Both users belong to the updaters group as well as other groups. New directories and files are created in the /updates/ directory. drwxrwsr-x 8 sftp updaters ...
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1answer
181 views

Securely running LAMP under a specific user

I'm setting up a sandbox type of server that will be used by a couple users as a development environment and knowledge base. The server will have a web frontend so I've installed Apache, MySQL and ...
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Giving PHP permission to write to files and folders

UPDATED FOR FURTHER CLARITY: According to http://expressionengine.com/user_guide/installation/installation.html, it says: For most Unix hosts the following is typical, but you may check with your ...
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188 views

Do we need to chmod a shell script before it can be rsh

I tried to rsh a shell script from OpenVms to a Red Hat linux. It seems that it is not executed. I created the shell script in OpenVms and Ftp it to the linux. I then ls -la the folder in linux: ...
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962 views

Temporary Permissions when installing DokuWiki?

I'm trying to upgrade to the latest version of DokuWiki, and I'm finding that the easiest way to do this is to install the upgrade plugin and just click a few buttons. But there are permissions ...
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113 views

Permission 0000 in /var/www/html through the sFTP

I can write in /var/www/html through the terminal in ssh, but to create a file by sftp through Filezilla, the file created have permissions 000. How do I fix this? My problem is with these ...
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70 views

How do I transfer files over ssh and also change their permission on the remote server without having to log in twice

guy@home~% scp file.* guy@server.server.com:/users/guy/public_html/kool-stuff/ Ok so this transfers some files. Then I usually have to login in another terminal and do this in order to make them ...
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70 views

Preventing user from accessing parent folders [duplicate]

I have a user who I only want to be able to access /var/www/ucp/ (his home directory). I have executed the following command on the / directory, the /var/ directory and the /var/www/ directory: chmod ...
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4k views

chmod: cannot access 'file' : No such file or directory error when the file exists

I downloaded and saved 2 files on Linux tails live os. I have set the appropriate permissions on those 2 files to allow them as executable. This is the command I used. sudo chmod 777 ...
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650 views

Changing permission from read only in linux?

I am trying to get the automatic brightness bug fixed in Linux Mint 17 based on the new Ubuntu release. In order to do this i had to create a file named 20-intel.conf in location ...
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322 views

list out owned file/directories and change its permissions

Can anyone please tell how can I change files/directories owned by me only. below is the command that list out files/directories owned by me find . -user <username>
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How to exclude hidden files in recursive chmod?

I am having to do chmod -R 755 some_dir where 'some_dir' contains '.git' folders. Is there any way I can exclude hidden files and folder when doing recursive chmod? Note: chmoding .git folder is ...
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2k views

Set default permisson for newly folders and files in Linux

I'm using OpenSuSE and my computer has only 2 accounts: root and me.I have a directory /srv/www/htdocs/abc. I just want to set it up so that when new folders or files are created in this directory ...
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686 views

Directory appears as file?

So we copied some photos in a directory across to a NTFS partition last night, and they were viewable from ubuntu. Today the directory is not accessible from Windows, and when we booted back into ...
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Safe to change owner of OS X system folders?

I'm trying to get Homebrew to work. That program's diagnosis tool gives me these suggestions: You should probably chown /usr/local/etc ... You should probably chown them: ...
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1answer
202 views

Able to delete file without permission [duplicate]

I've been experimenting with file permissions and ownership lately, and I tried this: touch a sudo chown root:root a sudo chmod 000 a I can't read, write, or execute the file, but I can still ...
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Executable located in location A how to run it in location B?

So, I've an executable in my debian server and this executable located in /home/human/ExecuteIt, still i cant figure it out how to run my executable in another location. In my case it is ...
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grant permission in linux

I have a linux web server with 2 hard-drives. There are 2 users, one can access /home/user1 and the other user can access /home2/user2 I would like to grant user1 permissions to access /home2/users/ ...
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Permanently change permissions of /var/run/postgresql

On Linux Mint 17.0 Cinnamon Edition, I want to use /var/run/postgresql as the unix_socket_directories option for all of my postgres databases. Whenever I run the command pg_ctl -D postgres-data -o ...
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Centos 7 FTP Hidden Directory Issue

After setting up Centos 7 with a web server standard install and LAMP stack. I installed vsftpd. Everything works fine and configured it to accept passive to enable gui ftp programs. However, when ...
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Capital S in file permissions [duplicate]

I issued the command sudo chmod 700 <directoryname> in the hopes of getting the permissions for that directory to look like drwx------ Instead, they look like drwx--S--- Why does this ...