A file system structure in which to store computer files.

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7
votes
1answer
376 views

Expand ~, . and `..`

Since ~, . and .. are special directories, why are they handled differently in the following example? $ echo ~ /home/tim $ echo .. .. $ echo . . ~ is expanded into the dir, but the other two are ...
4
votes
2answers
605 views

Shell script printing the most visited directories

Is there a way to write a bash script with the following functionalities? Be launched when I press some key or key combination. (not so important requirement) Identify the 7 most visited directories ...
14
votes
5answers
2k 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 ...
2
votes
1answer
3k views

Why can't list file/directory relative to .. from a symbolic link directory (No such file or directory)?

I have a /usr/tomcat6/logs directory linked to /var/log/tomcat6. When I changed directory to /usr/tomcat6/logs and try to ls files using a relative pathname ../conf/Catalina/localhost, a No such file ...
11
votes
5answers
3k 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 ...
9
votes
1answer
1k views

Why could the size of the “dot” file “.” exceed 4096?

Today I found an "empty" directory with a size of 4MB. It had no visible contents, so I tried ls -lah. This showed me some hidden files (not very large). Searching for the reason why the directory ...
8
votes
2answers
1k views

the slash (/) after a directory name on shell commands

I have a little question here. If I have two files, say filea and fileb, mv filea fileb would delete fileb rename filea to fileb Then if I have two directories, say dira and dirb, mv dira dirb ...
7
votes
1answer
608 views

Why are rmdir and unlink two separate system calls?

Here's something that kept me wondering for a while: [15:40:50][/tmp]$ mkdir a [15:40:52][/tmp]$ strace rmdir a execve("/usr/bin/rmdir", ["rmdir", "a"], [/* 78 vars */]) = 0 brk(0) ...
6
votes
3answers
2k views

Read a directory to see the file to inode mapping

I'm just learning about filesystems and it is said that a directory is just an ordinary file which keeps a list of file-inode pairs. If I try to open the directory Downloads with any of the following ...
5
votes
2answers
4k views

Path syntax rules

I'm writing a library for manipulation Unix path strings. That being the case, I need to understand a few obscure corners of the syntax that most people wouldn't worry about. For example, as best as ...
5
votes
2answers
2k views

Trailing slashes on symbolic links to directories

I'm trying to emulate the process of path resolution (see man page path_resolution) in unix-like systems. My OS is Linux with GNU coreutils 8.7. In order to clarify the meaning of extra trailing '/' ...
5
votes
3answers
3k views

On deep-created directories

In Windows, there is a certain limit on the number of characters in a path, which restricts how deep a directory can be created. I was wondering what the case is like in Linux? Do you have some ...
4
votes
5answers
8k views

Find and copy directories containing file type

I have a directory "Movies" containing subdirectories "Movie Name". Each subdirectory "Movie Name" contains a movie file and related image/nfo files etc. I'm trying to copy all directories containing ...
4
votes
3answers
2k views

Infinitely Nested Directories

Let me start off by saying this is a Mac Terminal I'm using. Not Linux, but I assumed I would get the best answers here as it has to do with Unix and the command line not really anything about Mac ...
3
votes
2answers
730 views

Link value is 2 by default for folders

Can anyone help me to understand the logic behind the link value being "2" for the first time when we create any folders/ directory in linux. I searched a lot , but couldn't get satisfactory logic
3
votes
6answers
1k views

Make directory copies using find

I have a directory with a bunch of subdirectories in it. Thus /usr/local/src/ccl/ccl-1.8/x86-headers$ ls elf gl gmp gnome2 gtk2 jni libc Each of these directories has a further subdirectory C ...
3
votes
3answers
240 views

Permissions for a submission script

I'm a TA for an introductory Python programming class (all work is done from the terminal), and I'm writing a project submission script. Ideally I want a directory setup like this: submissions/ ...
2
votes
2answers
2k views

Can one copy a relpath in one command?

I find myself doing this often enough that I wonder if there's a standard Unix way to do it: % mkdir -p /TARGETDIR/relative/path/to % cp ./relative/path/to/somefile /TARGETDIR/relative/path/to In ...
0
votes
4answers
137 views

Flattening complex folder structures with duplicate file names

I have a folder with a complicated folder structure: ├── folder1 │ ├── 0001.jpg │ └── 0002.jpg ├── folder2 │ ├── 0001.jpg │ └── 0002.jpg ├── folder3 │ └── folder4 │ ├── 0001.jpg │ ...
6
votes
2answers
217 views

Filtering redundant paths from a list of paths

I have a list of relative paths such as this: dir1 dir2 dir2/dir3 dir2/file1 dir3/file2 dir3/dir4 dir3/dir4/file3 In the example above, the specifier dir2/file1 (for example) is redundant, because ...
6
votes
1answer
3k views

Recursively compare directory contents by name, ignoring file extensions

I have a directory containing about 7,000 music files. I used lame to recursively re-encode all files in it to a separate directory, outputting all files with the same relative path and file name. ...
5
votes
2answers
1k views

Dots in path name

I am receiving an error from an application I am running. The error looks like this: john@john-replacement:~/Desktop/yarbu-1.4.8/bin$ sudo yarbu-engine --VERBOSE /usr/local/bin/yarbu-engine: line ...
5
votes
1answer
6k views

mv file without write permission to the source file

I just realised that I can move a file that I do not own and don't have write permissions on. I have write permissions to the directory, so I am guessing that is why I could move it, but in this ...
4
votes
1answer
881 views

Why are execute permissions required to rename files in a directory?

Say I'm the owner of a directory and I have read and write permissions, but not execute permissions, where the directory structure is like this: x/ (drw-r--r--) y (-rw-r--r--) ...
4
votes
3answers
782 views

Find files in directory with paired names

I'm running tests of a variable-size-and-contents test set. Data files are added and removed frequently. I'm looking for an automated way of gathering a file list. All files are in subdirectories of ...
4
votes
1answer
179 views

What is the tool that allows me to specify arbitrary directories using **

I once saw a colleague uses a tool which allows to use ** to represent any directories. For example: if a file called myfile.java sits deep inside: src/main/com/mycompany/product/store/myfile.java ...
3
votes
2answers
52 views

Login via ssh to last used folder

I have simple question. Is there any chance to configure ssh in that way, when I login to my server via ssh I want be in last used directory?
3
votes
2answers
1k views

How to count occurrences of all the words in all the files of a directory using grep? But with count incremented only once per word per file

I have already asked a similar question but people misunderstood what i was asking. I was asking how to generate a list of every word with a word count incremented only once per word per file. For ...
3
votes
1answer
232 views

Test for link with trailing slash?

I created in /tmp/test/ mkdir somedir ln -s somedir/ somelink I want to loop through only directories: for file in */ ; do if [[ -d "$file" && ! -L "$file" ]]; then echo "$file is a ...
3
votes
1answer
1k views

How to download all html files from a URL's directory with wget?

I'd like to use wget to download a tutorial in a website, but this tutorial is in a specific directory. Suppose the URL is the tutorial main page http://www.abc.com/aaa/bbb/ccc/index.html. But the ...
3
votes
2answers
2k views

Why can I only run a .sh file from the parent directory, not the child directory

I am a Linux noob. I noticed that this does not work: /tomcatDirectory/bin $ startup.sh //command not found but this does work /tomcatDirectory $ bin/startup.sh I am used to Windows. It seems ...
3
votes
2answers
1k views

A question about permissions of hierarchical directories

I have some directories, with following permissions: drwxr-xr-x 18 user1 root 4096 Oct 27 11:25 /home/test1/test2 drwxr-xr-x 24 user1 root 4096 Oct 21 08:38 /home/test1 drwxr-xr-x 492 root root 12288 ...
2
votes
1answer
28 views

What is the effect of “chattr +a” on a directory

The a Linux file attribute is often documented as applicable to files. chattr(1) manpage: A file with the 'a' attribute set can only be open in append mode for writing. ext4 wiki: 0x20 ...
2
votes
2answers
92 views

ls doesn't give me the same as cd + ls to the same folder

$> ls ../../../../.. Doesn't give me the same result as $> cd ../../../../.. $> ls Why? Something with links? What's going on? [ johanrj@jamin ] ...
2
votes
5answers
308 views

move a directory with a single character (back quote) as its name [duplicate]

How can I move a directory whose name is just a space? ls -lah drwx------ 4 user1 user1 8.0K Mar 13 14:16 . drwxr-xr-x 3 root root 60 Mar 13 13:48 .. drwx------ 18 user1 user1 4.0K Mar 13 11:18 ...
1
vote
3answers
253 views

Opening current directory from a terminal onto a file browser?

My current directory is buried deep in multiple subfolder layers from my home directory. If I want to open this directory in a gui-based file browser, I have to double click folder after folder to ...
1
vote
1answer
140 views

Listing directories and understanding ls

On ls man page, I saw this -d, --directory list directory entries instead of contents, and do not dereference symbolic links on my current folder: drwxr-xr-x 2 oracle oinstall 4.0K Jul ...
1
vote
2answers
290 views

Does change of a file in a directory not change the time of the directory?

I want to find a file which I created recently, but I don't remember anything and can only guess it is under a directory indirectly with any possible depth. I inspected the times of all the ...
1
vote
1answer
769 views

cp /etc/DIR_COLORS ~/.dir_colors not responding

I'm using CentOS 6.5 and Putty. My problem is that directory file names are shown in dark blue color which is hard to read. I google searched and found this link; basically it's copying the DIR_COLORS ...
1
vote
3answers
503 views

Group+rx permission only in directories using ACL?

I need to install acl in order to set up a very specific permission structure. Group members should be able to see the files in a directory and change into the subdirectories. However, they should not ...
1
vote
2answers
3k views

Find and move directories based on file type and date

I have a directory "New Movies" containing 200+ subdirectories "Movie Name (year)". The subdirectories "Movie Name (year)" contains a single video file (avi/mkv) and several related jpg/xml files. I ...
1
vote
2answers
3k views

Cheapest way to find the oldest file (recursively) from a directory under heavy load

What is the least expensive way to find the oldest file in a directory, including all directories underneath. Assume directory is backed by SAN and under heavy load. There is concern that "ls" could ...
1
vote
2answers
982 views

How can be monitored I/O stream in a particular Linux directory or file?

I have a problem with monitoring of i/o stream in the particular directory(amount of read and written bytes during specified period). I have been trying to use iostat, inotifywait and inotifywatch, ...
0
votes
4answers
65 views

How to merge one directory into other?

May somebody tell me if there is there some way to "merge" one dir into another? I.e. let I have /some/directories/structure with subdirs/files. And now I want to "implantate" it into /etc for ...
0
votes
0answers
21 views

New files in a mounted directory are being created with a different user and removing write permission for other users

I am running a python script that outputs files into a mounted directory on a different computer. The script can be run multiple times in a way that overwrites the contents of created files. However, ...
-2
votes
2answers
64 views

Is this good in order to have an empty directory?

I would like to have a directory mydir with empty content, but I don't know in advance if it already exists, or when it does, if it is empty. So my way is mkdir -p mydir ...