A file system structure in which to store computer files.

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3
votes
3answers
101 views

What is the difference between home$ and ~$?

I'm learning Linux, and I'm a little confused right now. In the below screenshot, I was not able to understand the third shortcut of Table 2-1. It says that cd ~user_name will change the working ...
24
votes
5answers
15k views

Converting relative path to absolute path

Is there a *nix command to get absolute(and canonicalized) path from relative path(with current path) or symbolic link?
23
votes
3answers
83k views

“Input/output error” when accessing a directory

I want to list and remove the content of a directory on a removable hard drive. But I have experienced "Input/output error": $ rm pic -R rm: cannot remove `pic/60.jpg': Input/output error rm: cannot ...
-1
votes
3answers
48 views

How to access dot directory [on hold]

I’ve been googling on how to access dot directory in unix like system, but everybody is just talking about dot directories for this and that reason. I haven’t found anything on how to get to directory ...
2
votes
3answers
28 views

tar compresses folder, but creates nested structure

I have the following folders on a linux machine ./myFolder ./tmp ./packages ./zips compress.sh I run tar -czf ./zips/someFile.tar.gz ./tmp/someFolder from compress.sh. The folder is ...
7
votes
2answers
90 views

Keeping history per working directory (cf. per shell session)

Is there a way to make a modern shell's history feature be scoped to a path? My working contexts are split up as paths on the file system, and the pattern of shell activity, such as repeatedly issued ...
1
vote
4answers
187 views

Is it possible to execute a binary without specifying the full path or the preceding './'?

Outside of a shell, such as running some other process, what does the term current directory mean, and is it possible to execute a binary without specifying the full path or the preceding './', ...
1
vote
2answers
2k views

How to find certain files and move them to a new directory in the same command?

So I was looking around and all I have found is how to do this only if the directory is already made, which is this: find source -name '*.z' -exec cp {} destination \; But how can I make a new ...
14
votes
8answers
72k views

How to remove all the files in a directory?

I am trying to remove all files and subdirectories in a directory. I used rm -r to remove all files, but I want to remove all files and subdirectories, excluding the top directory itself. For ...
1
vote
1answer
20 views

Strangeness with Symlinks and Relative Paths

Could someone please explain this to me? I'm having trouble understanding how this is set up and why it behaves the way it does. I wanted to see where zsh is actually installed on a machine that I ...
1
vote
1answer
72 views

Server Authorization directory incorrect ownership during linux mint installation

When installing linux mint 17.1 from a bootable usb onto a hard drive I get the following message: 'Server Authorization directory (daemon/servAuthDir) is set to /var/lib/mdm but is not owned by ...
14
votes
5answers
15k views

How to recursively find the amount stored in directory?

I know you are able to see the byte size of a file when you do a long listing with ll or ls -l. But I want to know how much storage is in a directory including the files within that directory and the ...
39
votes
7answers
27k views

How to XZ a directory with TAR using maximum compression?

So I need to compress a directory with max compression. How can I do it with xz? I mean I will need tar too because I can't compress a directory with only xz. Is there a oneliner to produce e.g. ...
6
votes
5answers
194 views

How to execute a bash command in all possible subdirectories?

Let's say my main directory is /home/test Under it i have lots of subdirectories and under subdirectories still a lots of them and so on. Example: /home/test /home/test/subdir1 ...
2
votes
4answers
1k views

Find directories that do not contain subdirectories

I'm writing script is ksh. Need to find all directory names directly under the current directory which contain only files, not subdirectories. I know that I could use ls -alR and recursively parse ...
9
votes
3answers
2k views

find with -execdir

I run a find with -execdir both I don't get the results I was expecting. SSCCE below: mkdir -p a/b/c find . -type d -execdir touch foo \; $ tree a a ├── b │   ├── c │   └── foo └── foo Directory c ...
2
votes
4answers
91 views

Why . /home/Desktop is incorrect and ./Desktop is correct?

I'm learning about Linux, started yesterday. I have a question which I couldn't answer from my book or Google. What is the difference between ./ and / in the shell? I'm asking this because when I ...
4
votes
5answers
88 views

command which works like ~ (tilde) symbol to represent some directory

cd ~/scripts. This will go into scripts directory in my home. Similar to this, I want some "alias" kind of setting, which will allow me to enter some other directory so that, cd xxx/mywork -> will ...
4
votes
2answers
92 views

Why does '/' have the inode 2?

On many *nix systems like OS X and Ubuntu, We can see the inode of root directory is 2. Then what is the inode 1 used for?
1
vote
1answer
65 views

How to list all leaf files under a directory in reverse time order?

Given a directory, how can we list all its leaf files in time reverse order? ls -Rltr ist the content of a subdirectory in time reverse order, but groups files by subdirectory, which break the ...
3
votes
2answers
76 views

Unzip into directory, independent if directory is contained in ZIP

Let's assume I've a ZIP file whichs content may look like # file: with_out_dir.zip file1.txt file2.cpp file3.js some_sub_dir/ - file_in_subdir.txt file4.xml but it may also look like this # file: ...
7
votes
7answers
9k views

What's the best way to count the number of files in a directory?

If parsing the output of ls is dangerous because it can break on some funky characters (spaces, \n, ... ), what's the best way to know the number of files in a directory? I usualy rely on find to ...
13
votes
10answers
8k views

How do I create a directory in all subdirectories?

Suppose I have a directory structure like this: $ [~/practice] ls a/ b/ c/ d/ Now I want to create a directory tmp1 in all sub directories of practice and I do this: $ [~/practice] mkdir */tmp1 ...
0
votes
2answers
24 views

Disable directory permissions change

I have a client whose website uses a plugin which creates a temp directory with 777 and I am being alerted by e-mail about it several times per minute. Since I do not want to add exception to the CXS, ...
9
votes
2answers
357 views

Is a directory removed when its number of hard links becomes 0?

Is a directory removed when its number of hard links becomes 0? A directory always has at least 2 as its number of hard links, because of .. When rm -r a directory, does it decrease the number of ...
3
votes
1answer
43 views

Timestamps of a directory?

About mtime of a directory, from Stéphane Chazelas's reply http://unix.stackexchange.com/a/187231/674 The modification time of a directory, like any other file (note how directories are called ...
-2
votes
0answers
48 views

creating new filesystem?

Is it possible to create directory/filesystem that would be beyond unix-like filesystem ( I mean "/" ) so when I will use command pwd , its output would be "example_folder" not "/example_folder" . I ...
139
votes
3answers
57k views

How do directory permissions in Linux work?

In my CMS, I noticed that directories need the executable bit (+x) set for the user to open them. Why is the execute permission required to read a directory, and how do directory permissions in Linux ...
2
votes
1answer
130 views

rm -rf: cannot remove `/opt/jetty': Directory not empty

I have a script using the following command to remove a folder: ssh -q root@hostname sh -c 'rm -rf /opt/jetty/' Most of the times it works fine, but occasionally I get this message: rm: cannot ...
2
votes
1answer
35 views

Shell Scripting: Deleting or moving files from one directory that match filenames from another directory

I have a very specific and odd problem to solve. I'm working as a research assistant and I've been producing a ton of figures. In one directory, I dump .pngs to view casually (limited space here) and ...
4
votes
2answers
57 views

Prevent the Gtk file dialog from listing mount points

When I open the Gtk file dialog, there is a box called “Places” on the left-hand side which lists “Search”, “Recently Used”, a bunch of directories, and several things that appear to be volumes. I ...
2
votes
3answers
128 views

tar unix not changing directory

I am executing a tar command to compress files which are present in another directory. I executed following command: tar -czf /backupmnt/abc.tar.gz -C /backupmnt/statusService/ * I want to create ...
1
vote
1answer
997 views

Trouble installing lxml with custom install location for libxml2/libxslt

I am attempting to install a python module called lxml to my account on a supercomputer running RHEL. I do NOT have root access or super user status. lxml requires the dev/devel versions of libxml2 ...
1
vote
1answer
31 views

Mount host directory in a virtual machine

I have a directory on a system which is the host for a virtual machine. I want to make this directory accessible from the guest of the virtual machine. There are some way I can think of, packing the ...
2
votes
1answer
181 views

Why can't I remove the empty directory with username www-data? [duplicate]

The test is a directory which contains nothing, an empty directory. root@localhost:~# ls -l /home drwxrwxrwx 2 www-data www-data 4096 Apr 26 17:50 test root@localhost:~# ls -l /home/test ...
1
vote
1answer
361 views

Apache created files and its permissions for CentOS 6.x

In short, I have an authenticated HTTP-POST that: posts a jpg image (created as 666 apache:www) into /directory1 (777 ftpuser:www) creates /directory2 (created as 666 apache:www) in a 777 ...
3
votes
2answers
93 views

Are there widespread filesystems which represent directories with structures optimized for fast lookup?

In "The Art of Unix Programming", on the topic of The Terminfo Database I read: If you look in the terminfo directory, you'll see subdirectories named by single printable characters. Under each ...
0
votes
1answer
9k views

enable apache mod rewrites to load clean-urls

In CentOS, a2enmod rewrite results in “command not found” but httpd -M lists rewrite module as listed and shared. I'm trying to enable it so can then have these rewrite rule apply so I can switch back ...
10
votes
4answers
38k views

How can I list subdirectories recursively?

The obvious ls -dR does not work. I am currently using find /path/ -type d -ls but the output is not what I need (plain listing of sub-folders) Is there a way out?
0
votes
1answer
17 views

Find out home directory of running Oracle instance

There are two oracle directories on our system: oracle oraclex How can I find out which of them is used by the running Oracle instance?
14
votes
5answers
1k views

How is a directory a “special type of file”?

I am reading this Unix tutorial and came across this quote... We should note here that a directory is merely a special type of file. ...but no explanation or details are provided. How is a ...
1
vote
2answers
27 views

Diff directories using modification time (mtime) and size instead of contents

Is there an option to have diff (-q) not look at file contents and instead just look at size and mtime? If not, is there a tool similar to this that has the option?
0
votes
3answers
38 views

How to count subdirectories in a directory in UNIX?

I have to count the total number of directories that are in the given directory (note that these are subdirectories). I know how to count for files but am having trouble counting the directories for ...
1
vote
1answer
63 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 ...
2
votes
3answers
8k views

using root to mkdir in another users home directory

having a bit of a difficult time trying to create a folder under another user's /home/devuser1/pubic_html folder. I'm trying to avoid using sudo and looking for an alternative. The permissions on the ...
2
votes
1answer
53 views

How to scan a directory with a space in its name with maldet

I'm trying to scan some directories with Linux Malware Detect (command-line command maldet): maldet -a /SOMETHING\ 1/ But I get: maldet(13857): {scan} invalid path /SOMETHING 1/ I've tried ...
1
vote
1answer
91 views

Bash script won't work on current directory

I'm using Kali linux which is based on Debian and wrote an script to copy some files from where the script is based to a specified directory. But when I execute my script (called CopyFiles.sh), cp ...
8
votes
4answers
395 views

How do you check if a file exists within awk? [-d 'filename'] failing

I'm trying to generate a list of users who have a home directory set which does not exist. It seems I should be able to do this with awk, but something is wrong with my syntax. It keeps telling me ...
1
vote
0answers
19 views

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 ...
0
votes
2answers
43 views

How do I run find, maxdepth and other commands on lcd while using ftp?

I have got the command working locally using normal commands. I now need it to run while using ftp. I understand I need to use '!' And instead of copy I will need to use put so it works on the lcd, ...