chmod changes the permissions of each given file according to mode, where mode describes the permissions to modify.

learn more… | top users | synonyms

8
votes
4answers
15k views

How to fix sudo after “chmod -R 777 /usr/bin”?

I enetered chmod -R 777 /usr/bin and now sudo is not working. It is giving error that sudo must be setuid root. On looking via Google, some advice said to run chown root:root /usr/bin/sudo chmod ...
0
votes
1answer
23 views

Who can change a file permission or ownership in ubuntu? [duplicate]

Who has the privilege to change a file permissions or ownership in ubuntu ?
0
votes
1answer
15 views

Webserver permission problem

I've a permission problem on my dedicated webserver, but I'm not able to understand what's I was doing wrong. Ubuntu 14.04 Kernel 3.19.2 Versione Apache 2.4.7 Versione PHP 5.5.9 mysql 5.5 (all from ...
0
votes
1answer
37 views

I can't run a program in Ubuntu 14.04

I've got a problem with a program I downloaded last week from GitHub. I tried to chmod it (a+x), tick option to run it as a program, but it didn't help. I don't get any notifications. It just does ...
0
votes
2answers
5k views

Installing XAMPP

I'm new to linux and I'm trying to install XAMPP I downloaded the file and I cant execute it, I followed the Instruction on http://www.apachefriends.org/en/xampp-linux.html#374 but when I'm trying ...
0
votes
2answers
28 views

Change name of executable file when using chmod +x

I have python file my_script.py When I run: chmod +x my_script.py I end up with two files that are called my_script.py, one executable file and one python file, when I try to get the size of the ...
0
votes
1answer
20 views

can't change file permissions of key file [duplicate]

I have a .pem file. The normal chmod [4/6]00 [key_name_here].pem command doesn't work. The permissions are stubbornly stuck at 444 or 644.
0
votes
1answer
27 views

How the heck do I make jar files executable?

I am running Ubuntu 12.04 on my Toshiba Chromebook 2 via crouton (I'm using the xfce4 desktop enviroment so don't give me Unity fixes) and I am trying to run a .jar program through OpenJDK6. I just ...
0
votes
1answer
28 views

Mounting hard drives problem

Why doesn't Ubuntu mount hard drives automatically when it's launching? Moreover, I cannot chmod +x to the files in the hard drives after mounting. They are formatted as NTFS. If NTFS is not ...
0
votes
2answers
24k views

bash: ./install.sh: Permission denied installing intel fortran 2011

I am trying to install Intel Fortran Composer 2011. When I try to command ./install.sh it gives an error: bash: ./install.sh: Permission denied I tried some ways to get pass this. Tried; sudo ...
0
votes
0answers
9 views

Enable php pcntl: Cannot Create Regular File

I am trying to enable/install pcntl and I get the following error after running make: cp: cannot create regular file `/usr/lib/php5/20100525/#INST@24959#': Permission denied I am sure it is a ...
0
votes
1answer
25 views

Not detecting any external devices [duplicate]

I've recently installed Ubuntu 12.04 it was working fine unless I messed up with a command. I change all user permissions(as they call ago permission in Ubuntu) by running command sudo chmod -R 777 /. ...
1
vote
1answer
45 views

How do I revert to the previous permissions for a folder?

I changed permission of folder by chmod -R 775 example and now I want change it to previous permission mod, but I don't know what was that number instead of 755. That folder is my project folder and ...
0
votes
1answer
40 views

Unix permissions - what EXACTLY is the “owner group” (note: singular)?

I'm programming a Fuse file-system. So far so normal, didn't encounter unsolvable problems (except performance). However, I read the following articles: http://linuxcommand.org/lts0070.php ...
6
votes
2answers
7k views

Why doesn't chmod work on a file under /media?

I want to execute a script file from terminal but it shows error root@silambarasan-PC:/media/D-DEVELOPME/androidSdk/adt-bundle-linux-x86/sdk/tools# ./android -bash: ./android: Permission denied` so ...
2
votes
2answers
378 views

Is possible to make virtual host in a NTFS partition?

I am using Ubuntu and Windows. When I use Windows, i can't access my file in var/www of my Linux partition. So I try to make virtual host and DirectoryRoot in my NTFS partition. I will combine WAMP ...
0
votes
1answer
94 views

Android studio only starts with sudo

I just installed Android Studio, but I can only start it with root permissions: sudo ./studio.sh otherwise it fails with Error: Could not find or load main class com.intellij.idea.Main I am not sure ...
-2
votes
1answer
31 views

Is there any difference between umask value and chmod value?

I'm using umask in fstab settings. What I know is if i set 755 with chmod, the permission will be rwxr-xr-x. But, when I use umask in fstab with 755 value, permission that i get is ----w--w-. Giving ...
11
votes
2answers
1k views

What is the first number for in a 4-number chmod argument (such as `chmod 4555`)?

When I install a program, it recommends me to do chmod 4555. Okay, i know about values if I just use three numbers. For example chmod 555 test-file will give -r-xr-xr-x 4 for write, 2 for read ...
0
votes
2answers
285 views

“cannot open file userpref.blend@ for writing: Permission denied” in blender

I'm using blender 2.69, installed via software centre, and when I save my user preference through File -> User Preferences and click on "Save User Settings" there is a message "cannot open file ...
0
votes
0answers
55 views

Folder Permissions

I am having trouble serving a folder out using samba. I have already successfully shared a folder but my folder permissions are jacked up: [samba is successfuly shared, flexraid_pool is a folder I ...
0
votes
0answers
49 views

Give read/write rights for newly created files inside folder for users in group

I have created a user named ftpuser and a folder for him /home/ftpuser/files I added an existing user 'auser' to 'ftpuser' group sudo usermod -a -G ftpuser auser Last, I gave group ...
0
votes
0answers
653 views

Chmod error changing permission read only file system

I have three main partitions on my disc /dev/sda: /dev/sda1 2048 117186559 58592256 83 Linux /dev/sda2 117186560 128905215 5859328 82 Linux swap / Solaris /dev/sda3 ...
5
votes
4answers
558 views

How do I make an entire directory executable?

I have an entire folder dedicated to python scripts. I'm tired of doing chmod on every new python script that I write. Is there a way to make every file inside my folder executable if it is a python ...
0
votes
1answer
40 views

Cannot edit php5.fcgi owned by Me with RWX owner permissions

Ok, I kind of thought I understood Linux permissions and then I encountered this one. I am running Ubuntu 14.04 LTS in a virtualbox on my Windows 7 pro laptop. All udpates are applied to windows, ...
1
vote
2answers
36 views

Setting files and directories to match umask setting recursively

Is there a way to go into my home directory and recursively set files and directories to match my umask setting? The issue is, way back when I started using linux, I didn't understand permissions. In ...
-1
votes
1answer
97 views

Permission denied apache even after chmod

I am trying to setup my LAMP server on ubuntu when i am about to change mod chmod of the files in the /var/www directory but when i try : sudo chmod 0644 www/* -R and sudo chmod 0644 www -R ...
0
votes
0answers
16 views

could not connect to server

To solve an error that said ( permission denied ), I tried to sudo chown –R edxapp / Then error appear says: must be setuid root. And to solve that I tried chmod u+s /usr/bin/sudo but then ...
64
votes
9answers
64k views

How do I use 'chmod' on an NTFS (or FAT32) partition?

I have a script that I need to execute on an NTFS partition. The script's permission is set to 600. I attempted to modify the permissions by running chmod 755 script.sh, which doesn't report a ...
4
votes
1answer
141k views

How can I chmod 777 all subfolders of /var/www?

I’m running a webserver and FTP server, wherein /var/www is bound to /home/user/www. I set both directories to chmod 777 (which is fine since it’s for testing only). I can upload files into ...
1
vote
2answers
159 views

`sudo chmod +x *` caused me cannot open anything

Today I used sudo chmod +x * -R in my $HOME folder, actually I didn't want to use it in $HOME folder, it was an accident. Afterthat I tried to use sudo chmod -x * to fix it. But now, I couldn't open ...
0
votes
0answers
93 views

Accidentally gave chmod -R 777 /usr in Ubuntu 14.04.1

I found few questions related to chmod in / but not in /usr. While changing permissions for specific directory, i gave sudo chmod -R 777 /usr. When i reboot the system, the system is completely ...
3
votes
0answers
42 views

chmod -R 777 /etc, I have no name! [duplicate]

I really screwed up and did sudo chmod -R 777 /etc After searching for hours for an answer I eventually booted into recovery mode and did: mount -o rw,remount / # because the file-system was ...
2
votes
1answer
125 views

can't access to a folder even after chmod 777

I just created a new user, and I want to give access to a folder. I have done: chmod -R 777 ./p and this is the result lisa@linux:/media$ ls -halt drwxr-xr-x 27 root root 4,0K dic 11 ...
0
votes
3answers
525 views

Chmod is not working as expected

When i am about to change my file permission like this $ sudo chmod a+x *.* This error appear chmod: cannot access ‘*.*’: No such file or directory And when i want to change the permission ...
-1
votes
1answer
98 views

Is it okay to chmod 770 root directory “/”?

Output of ls: $ ls -lh / drwxr-xr-x 3 root root 4.0K Dec 9 18:56 boot drwxr-xr-x 17 root root 4.2K Dec 10 13:57 dev drwxr-xr-x 92 root root 4.0K Dec 10 13:57 etc drwxrwxrwx 9 lyndon root ...
0
votes
2answers
27 views

Site creation script - missing chmod permissions

We have recently taken ownership of a Linux server, on the server is a site creation script which works but seems to be missing the necessary chmod folder permissions (755?). I think we need to add a ...
0
votes
1answer
55 views

Boot for USB to fix file permissions

I will start from the beginning. I was a noob and ran a really bad command in Ubuntu and now I can't do anything with sudo. I ran: sudo chmod 644 / I was instructed to boot from a liveCD or ...
0
votes
0answers
30 views

Correct permissions or undo a command [duplicate]

I will start this question with I'm a noob and I broke linux. Probably shouldn't have ran the command I did but now I cannot use sudo for anything not sure how to undo fix what I did. The command I ...
0
votes
1answer
656 views

virtualbox - Failed to load VMMR0.r0 (VERR_SUPLIB_WORLD_WRITABLE)

After I create a new Virtual Machine, when I start it, it shows following error: Failed to open a session for the virtual machine Milad. Failed to load VMMR0.r0 (VERR_SUPLIB_WORLD_WRITABLE). Result ...
2
votes
2answers
72 views

chmod only certain mime-types

I'm using file --mime-type * to find the mime-types of all files in a selected directory. Many of these files should not be executable and are .conf or their type is text/plain. Is there a ...
0
votes
2answers
125 views

User Rights letters to numbers

I am having Problems converting user rights. I want to assign the following rights to certain files/folders but dont know hat to translate them into a format which chmod will work with like chmod 755. ...
4
votes
1answer
4k views

local wordpress installation, plugin installation and file permissions

I have a local wordpress installation and got everything working, until I tried to install a new plugin. Trying to activate the plugin, wordpress asked me for FTP connection information, which I ...
0
votes
2answers
164 views

Setting correct permissions

First of all let me say that i am almost new to Linux so please be patient :) I have an Ubuntu 14.0.4 running on my Systems. What i am trying to do is: On my system there are sabnzbd and plex ...
0
votes
1answer
99 views

Make all new .sh file executable

One of my script is making new .sh files in /tmp/ folder how can I setup that all new files in /tmp/ folder will get chmod -x automaticaly because my script is failing when trying to run scripts in ...
1
vote
1answer
2k views

Executable not running even after chmod'ing it

I am trying to run a BETA precompiled copy of rcracki, but the problem is when I try to run the executable, it gives an error: root@hosted-by:~/Desktop/rcracki_mt_0.7_beta2_linux_x86_64# ls COPYING ...
0
votes
1answer
2k views

Unable to run compiled files - bash: ./a.out: Permission denied. (I've tried chmod)

First of all, there are many questions like this on AU. Still, none of them solved my problem. I've compiled my C source using cc test.c, and it did generate a.out file. However when I run it I get ...
0
votes
1answer
1k views

Unable to change permissions for apache file 000-default.conf

I am trying to change the permissions for the apache file /etc/apache2/sites-enabled/000-default.conf when I input the command sudo chmod 755 000-default.conf the file still stays to ...
0
votes
0answers
43 views

The solution for permission denied of double OS

I first installed windows(Four disks: C, D, E, F) several years ago when I was naive. Later, I met the ubuntu and allocated some space to her. Now, I fall in love with open source and ubuntu so I use ...
3
votes
2answers
513 views

Root directory '/' locked after using chmod

I accidentally used sudo chmod 3 / which gives a execute and write permission to the root directory, while deleting the read permission. How can I recover from this, I cannot even use sudo now.