The layout of the directory hierarchy — questions like “where does this file belong?” or “what is this directory for?”.

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2
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1answer
1k views

use `/run/shm` (formerly `/dev/shm`) as a temp directory

Is it good practice to create a directory in /run/shm (formerly /dev/shm) and use that like a temp directory for an application? Background: I am writing black box tests for a program which does a ...
0
votes
3answers
321 views

Are .bz2 files inside /var/lib/pengine safe to delete?

My problem is that my /var partition is over 80% (total size: 4.9G). I was reviewing the files into this partition and I saw a file which has 3.4G. (/var/lib/pengine) I dig into that /pengine file ...
3
votes
2answers
77 views

Why does find -exec du sum up differently?

I have family pictures and movies in a folder /media/data/Selbstgemacht and I'd like to find the size of all pictures. In /media/data I use find Selbstgemacht -type f -iname '*.jpg' -exec du -ch '{}' ...
5
votes
5answers
7k views

Find the total size of certain files within a directory branch

Assume there's an image storage directory, say, ./photos/john_doe, within which there are multiple subdirectories, where many certain files reside (say, *.jpg). How can I calculate a summary size of ...
2
votes
2answers
414 views

What is an appropriate naming structure for storing application packages?

I need to determine an appropriate directory naming structure for a package management system. The original directory structure was not POSIX-compliant in any way and certainly not UNIX-style (you'll ...
5
votes
4answers
236 views

Ways to organize and access frequently visited directories and files?

In my Ubuntu, I have added some frequented directories to the bookmarks of Nautilus, for visiting them quicker. Nautilus can consume a lot of memory, when it has been kept open for long and there ...
1
vote
1answer
23 views

Why do upgrades to KDM/KDE not preserve changes to configuration files?

The kdebase-workspace package on Arch Linux only preservers changes made to /usr/share/config/kdm/kdmrc when the package is updated. I need to edit /usr/share/config/kdm/Xsetup to get my monitors to ...
1
vote
1answer
59 views

sudo chown -R $USER:admin /usr/local - revert back to ROOT?

On OS X, but may also apply to *NIX. This question was asked/answered previously, and I know it's safe to chown on /usr/local for my admin user account, which I've done to install git with homebrew ...
0
votes
1answer
30 views

Where is <libraryname>.pc?

When installing a library with configure, make and make install, does make install copy <libraryname>.pc to some place? If yes: Where is it? If no: Should we copy it somewhere rather than ...
0
votes
1answer
57 views

What is the difference between ~ and / in paths [duplicate]

When I first log in to Unix on my Mac, I usually see a ~ after my username in the command line. However, if I look at the apps contained in that directory ~/Applications they are not all of my ...
2
votes
3answers
319 views

Is this command safe to run from / as root

find . * -depth -print0 | xargs -0 rmdir It finds and removes all empty folders (including hidden ones) recursively. I only tired it on my home folder and a pendrive in Linux PC and it worked but I ...
3
votes
3answers
390 views

What are the world writable directories by default?

In a standard Linux filesystem, which of these common directories are world-writable by default? /tmp /etc /var /proc /bin /boot /.... .... Why are they world-writable? Does that pose ...
5
votes
2answers
108 views

Why does a grep reboot the machine?

On a RHEL 6.5 Desktop, if I use: sudo grep -r foo /* my desktop reboots. Q: Why?? How to debug this? It's the third time my Desktop reboots because of this :D
2
votes
1answer
47 views

What are files in `/var/crash/`?

I know when a program crashes, some files creating in /var/crash/. But I don't know what these files are! Is that error logs?
237
votes
3answers
64k views

What is the purpose of the lost+found folder in Linux and Unix?

There is a folder at the root of Linux and Unix operating systems called /lost+found/ What is it for? Under what circumstances would I interact with it? How would I interact with it?
3
votes
2answers
238 views

Where should I copy-paste-install software to?

I'm installing IntelliJ, and the readme tells me to choose an installation folder. Where is a good, standard place to put installed programs?
5
votes
1answer
127 views

Strange kind of “stealth” directory on Linux

I am in a Linux machine and am working with a directory that is aptly named "stealth", because it runs and hides! Take a look at this behavior: bash-3.2$ ls /net bash-3.2$ ls -la /net total 4 ...
2
votes
3answers
56 views

Where should I place my websites files with multiple vhosts?

If vhosts are enabled, where should I place my website files? /home/aunser/www /var/www/site1, /var/www/site2 /usr/local/website/site1, /usr/local/website/site2 the systems is CentOS 6.x/RHEL ...
2
votes
1answer
37 views

updatedb for a beginner

The updatedb command, as I understand it, is basically the utility that keeps the mlocate.db database file updated. And it's a good idea to keep it updated regularly. For that matter, I've kept a ...
5
votes
3answers
991 views

What are the advantages of the Unix file system structure

If I install an application in Linux for example Debian/Gnu Linux, the files of the applications are copied to many different directories in the file system. Some scripts goes into /usr/share .. ...
0
votes
1answer
76 views

What are the advantages / disadvantages Linux file hierarchy has in compare to other OSs? [duplicate]

does it make any difference whether a file system hierarchy chooses to sort files by types and put them all under one directory (like all the binaries are under bin) or on the other hand sort them by ...
1
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3answers
57 views

mysql database no space available

I was restoring a 200 GB database into a newly installed RHEL machine. However, while restoring I ran into no space available issue. Is it possible to change the directory where the databases are ...
27
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1answer
1k views

Why aren't crontabs stored in user home directories?

I'm curious to know: why are crontabs stored in /var rather than in the user's home directories? It makes it a total pain to isolate these files for upgrades but I suspect that there is a logical ...
1
vote
4answers
86 views

What code should I use to download and install my script into a user-writable directory in the user's PATH (without requiring sudo)?

Edit: places where I said $HOME/.bin I should have written $HOME/bin or any equivalent is fine. I.E, any user-writable directory that is in the user's PATH. So I have a bash script which I am ...
2
votes
1answer
69 views

Possible to move boot files?

I just bought an external hard drive that's 1TB. I formatted my laptop and burned Linux to it. The thing is, I also use my hard drive for other things. Can I move these boot files into a custom ...
1
vote
1answer
56 views

Encrypt my disk but allowing to enter the password with SSH

Can you help me with this problem please? I need encrypt whole disk on Debian 7.5, (it will be work as server) but I need enter encryption password via SSH. So I need encrypt whole disk except primary ...
2
votes
2answers
41 views

Who should own files shared by a group and where should they go

I am configuring a Linux work station that will be used by a small number of users (20-30). These users will belong to a small set of groups (5-10) with each user belonging to at least one group and ...
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4answers
105 views

How to exclude directories from `ls -R` output?

If ls -aR | grep ":$" returns ./.hiddendir2: ./dir1: ./dir3: ./dir3/.hiddendir4: then how can you update the pattern given to grep so that you only get ./dir1: ./dir3: (note that the last ...
2
votes
4answers
61 views

Is there a folder accessible to all process and users at all times?

I have a script that gathers debugging info from the running environment and I need to figure out were I can save that info. It may be called anytime: at boot when the system is running at ...
1
vote
4answers
90 views

Into which directory should I install programs in Linux?

I want to install a program in Linux and run it as a daemon. (Team Speak 3 in this case, but the question is general in nature). There is no package provided, only tarred binaries. Where in directory ...
3
votes
1answer
73 views

Is there a standards-specified location for user configuration files?

I'm talking about files like ~/.foo found on a user's home dir. I'm working on a program that reads from such a file, and I'd also like to clean up my user root directory if I can. Is there a ...
1
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2answers
133 views

How to know in which partition my application has been installed?

If I run df -h in an Oracle LINUX 5 server, I got below output: $ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 12G 8.8G 1.8G 84% / ...
2
votes
1answer
23 views

How can I know the default path for log directory?

I am programming in shell scripting, and would like to log results. Is there any way to know what is the default path storage for logfiles in my operating system? I have researched: set | grep ...
3
votes
2answers
54 views

convention regarding offline temporary data

When writing small utility programs, I sometimes want to keep small amounts of data around between executions, usually for caching purposes, but don't want the program to run as a daemon. Are there ...
19
votes
1answer
688 views

At what point did the /home directory appear?

Originally in Unix, /usr was used for user (home) directories. So if I had a user named alex, my home directory would be /usr/alex. (Interestingly, Plan 9, the successor to Unix, still has user ...
1
vote
1answer
64 views

Where did this copy of my home directory come from?

I was working on a project to control my digital camera using Ubuntu and gphoto2. At one point I noticed a new "~" directory in my project folder, /home/greg/project/~. When I enter this new "~" ...
5
votes
3answers
1k views

Mounting a device — role of /dev, /media and /mnt, and the mount command [closed]

I have several closely related questions about what happens when I insert a CD. The files on the CD /media/Ubuntu\ 11.04\ i386/, but from what I've seen /dev/cdrom is also involved. What is the ...
1
vote
2answers
84 views

Location of Xorg headers on FreeBSD 10

I'm running FreeBSD 10 and I'd like to build dwm. I've installed Xorg using pkg install. Where are the headers located? Maybe I'm just old fashioned but I first looked in /usr/X11R6 ... not there. ...
3
votes
1answer
244 views

Why does installing to /usr/bin automatically install to /usr/bin/X11?

I am using the command: install ./prog /usr/bin to copy the program to the /usr/bin directory. Doing this automatically installs the prog to /usr/bin/X11. Deleting from /usr/bin also automatically ...
3
votes
3answers
1k views

Adding to path vs. linking from /bin

Our sys admin installed a software (Maven) on the server, and told everyone to add the "/usr/local/maven/bin/" folder to their path. I think it could be more convenient to just link the few programs ...
1
vote
3answers
79 views

Consistency in default installation directories

I am very new to Linux (Ubuntu 13.10) and having difficulty understanding the file system, particularly with regards to installing applications. In Windows, when I installed an application, it put the ...
2
votes
2answers
131 views

Is there a --parents option for mv like for cp?

cp has a useful feature --parents that allows a file's directory structure to be copied to another directory: $ cp -v --parents source/directory/from target/ ‘source/directory/from’ -> ...
1
vote
3answers
105 views

Where to put wrapper scripts?

I created some scripts for administrative tasks etc, I made them to be independent from environment - every dependency is injected through arguments. However it is annoying to provide to script ...
1
vote
1answer
80 views

Deploying my application

When deploying my application under linux, where do I put my libraries, executable and the desktop entry file? And what about other files my program needs? For example background pictures, audio files ...
0
votes
1answer
43 views

Convention for primary app deployment dir structure on a Unix-like app server

The client I'm working for deploys their application to a directory they created at the root level. While acknowledging it is a matter of local preference, I am unsure if this is in accordance with ...
4
votes
1answer
209 views

What's the name of the top-level directory

I am using Ubuntu. I know by using cd ~/ , I can go to home/ directory. But if I want to go to the directory (I do not know the official name of this directory) which contains etc/, var/, opt/, ... ...
2
votes
2answers
71 views

Should my /usr/local/bin be 700 permissions?

I just installed npm and node.js, and I couldn't access npm. And I'm like "why?" and my OS is like "because /usr/local/bin is at 700 permissions" and I'm like "should it really be that way?" ...
3
votes
1answer
95 views

Redirect home to shared NTFS partition

I've installed windows 7 and linux dualboot. My partitions are: /dev/sda2: UUID="EC328C61328C329E" TYPE="ntfs" /dev/sda3: UUID="800E88610E8851D8" TYPE="ntfs" /dev/sda4: ...
3
votes
3answers
2k views

Should /usr and /home be on different partitions?

In studying for the lcpi exam, I met the following statement. If multiple disks are available it is good practice to also have the /usr and /home directories on different partitions. ...
1
vote
1answer
67 views

Server socket location, startup and monitoring

I'm writing a server on a shared development desktop that moonlights as a server. This is my first attempt at writing a linux server for someone else on a shared box. I'd like to conform to unix ...