Use this tag for questions about file management and operations on files.

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3
votes
2answers
171 views

How do I create a structured list of all the files and directories under a particular directory (recursively)?

I need to have an "image" of a file system without actual contents of the files - just all the names and the structure, so that I can read the file and know what files were stored there and how were ...
3
votes
2answers
375 views

shell howto: save multiple binary data files (jpg) to one file with some additional data and separate again

I have a system with restricted calculational power (fritzbox) and functions (busybox) and an webcam, able to deliver JPG files. Now I'm looking for for a method (based on shell script) to download ...
1
vote
4answers
1k views

Checking for the existence of files against a list

I have a "command" text file that issues a data file download command on each line. I send the command file to bash. However, a small percentage of the downloads fail. Here is the algorithm I ...
17
votes
1answer
2k views

Who creates /etc/{group,gshadow,passwd,shadow}-?

In any linux system I have access to (a couple of Archlinuxes, an Ubuntu, a Debian Sid and a Gentoo) there are the following 4 files in /etc/, all ending with a dash: /etc/group- /etc/gshadow- ...
49
votes
8answers
36k views

How can I edit multiple files in VIM?

I know I can open multiple files with vim by doing something like vim 2011-12*.log, but how can I switch between files and close the files one at a time? Also, how can I tell the file name of the ...
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 ...
1
vote
3answers
570 views

Script to count files matching a pattern in subdirectories

I wrote the following script for finding the number of pdf and tex files from the current directory, including the subdirectories and hidden files. The following code is able to find the number of pdf ...
2
votes
2answers
131 views

What file system is my file on? [duplicate]

How do I figure out which file system a given file/directory is located on? (For example, I would like to know if the file/directory is a temporary file in RAM, or if it's stored on disk. And what ...
3
votes
1answer
283 views

Why doesn't *nix keep track of file creation time? [closed]

I know about ctime and mtime and that their behavior is platform dependent. As I understand it, *nix does not have any way of keeping track of file creation time. Is this a historical accident? If ...
1
vote
1answer
447 views

file missing from Desktop screen but can be seen using “ls” under the Desktop directory

I downloaded some files onto desktop. After typing ls under the Desktop directory, I can see these files. However, I cannot see the icons on my desktop corresponding to the files I see with ls. I use ...
1
vote
4answers
872 views

Solaris 10 : Remove trailing blank lines from multiple files

I'm working on Solaris 10.What is the easiest way to remove blank lines from multiple files at once?
23
votes
2answers
31k views

How can I increase the number of inodes in an ext4 filesystem?

I had a problem (new to me) last week. I have a ext4 (Fedora 15) filesystem. The application that runs on the server suddenly stopped. I couldn't find the problem at first look. df showed 50% ...
4
votes
3answers
1k views

How to delete duplicates of files in directory and subdirs?

Is there any fast method to delete duplicates of files based on any hash sum (i.e. SHA1 to be fast). Because I've got some mess in my music files.
2
votes
4answers
1k views

Access the last file (alphabetically) in a directory

I'm trying to open a file with vim from the command line, the file is in a directory filled with automatically generated files that are prepended with a time stamp. Since I don't know the time stamps ...
2
votes
1answer
104 views

Finding out *what* is synchronizing two Linux servers

The last person to maintain these Red Hat servers somehow set it up so they stay in sync -- if I delete files on one it automatically deletes them on the other. I need to set up a new configuration on ...
12
votes
1answer
5k views

How do I enable locate and queue the database to be built?

On a new Ubuntu 10.4 instance, I tried to use the locate command only to receive the error locate: can not stat () `/var/lib/mlocate/mlocate.db': No such file or directory from using this command ...
1
vote
1answer
786 views

Allow Windows file share through a Linux Firewall

I'm struggling to enable NTFS share between two Windows (XP and 7) hosts through a Linux firewall. Here's my setup: [XPMachine-LAN1]---------->[LINUX FIREWALL]---------->[Win7-LAN2] What I ...
3
votes
1answer
202 views

Restricting access to files on an external drive

I was wondering how to restrict access to a specific drive in Unix on the Mac. I was thinking to do this in Terminal where I create a file like this mkfile 6k secure_access. And where secure_access ...
3
votes
1answer
1k views

Lock file from being edited or deleted

I have CentOS and cPanel installed. I want to lock certain files (e.g. .ftpquota) from being deleted through FTP. I tried to change the ownership to root:root or root:lock but it didn't work; neither ...
3
votes
2answers
277 views

Bash - file, arrays and output

I have a file that contains employees names, departments and the cities the employee is in, something like: John IT Chicago Joshua accounting New York Marcy CEO Los Angeles ... I have to transform ...
9
votes
4answers
7k views

creating a sequence of numbers, one per line in a file

Is there a way to create out of thin air, a file that is a sequence of numbers, starting at a given number, one per line? something like magic_command start 100 lines 5 > b.txt and then, b.txt ...
7
votes
5answers
1k views

Can I prevent a file from being created?

We have a machine that runs VMware Server. It constantly creates a file called not_configured in /etc/vmware/, which somehow makes our virtual machines not able to be started. I wondered if there was ...
5
votes
3answers
2k views

Is there a command to list the compressed file sizes for files within a .zip file?

I'd like to see the absolute size in bytes of each file that has been compressed into single zip file. Having read the zip man page, I'm not sure that that utility can do it. This is on Mac OS X. ...
4
votes
1answer
2k views

Asking rsync to create *any* necessary directories

I have the following loop in zsh: for x in my_folders*; do rsync -adrv $x/foo/bar/ /foo2/bar2/new_dir/$x/ done new_dir does not exist before calling rsync, and I would like rsync to create ...
27
votes
5answers
44k views

Script to monitor folder for new files?

How do I detect new files in a folder with a bash script? I would like to process the files as soon as they are created in the folder. Is this possible to do so or do I have to schedule a script with ...
4
votes
1answer
3k views

Rename All Files with a Certain Name

I'm trying to find certain files with the name "stringx" and replace the name (but not the extension) with "stringy". So basically for stringx.txt and stingx.cs, I'd want stringy.txt and stringy.cs. ...
1
vote
2answers
520 views

Network file sharing with freebsd server

I have a freebsd server at home. I also have other OSes like linux and windows connected to the same network via WLAN (wifi). I want to be able to share stuff (what ever I download ;)) on my FreeBSD ...
26
votes
4answers
29k views

What's the best way to join files again after splitting them?

If I have a large file and need to split it into 100 megabyte chunks I will do split -b 100m myImage.iso That usually give me something like xaa xab xac xad And to get them back together I have ...
49
votes
3answers
153k views

Get file created/creation time? [duplicate]

Possible Duplicate: How do I do a ls and then sort the results by date created? Is there a command in Linux which displays when the file was created ? I see that ls -l gives the last ...
27
votes
4answers
16k views

Reading lines from a file with bash: for vs. while

I'm trying to read a text file and do something with each line, using a bash script. So, I have a list that looks like this: server1 server2 server3 server4 I thought I could loop over this using ...
12
votes
3answers
3k views

Are two files hardlinked?

How can I tell if two files are hard-linked from the command line? e.g. something link this: $ ls fileA fileB fileC $ is-hardlinked fileA fileB yes $ is-hardlinked fileA fileC no
6
votes
2answers
6k views

How can I rename a lot of files using a regex?

I want to rename a lot of files on Mac OS X (10.7.2).. I don't have the perl package for the rename command. My files have names like "T452-102456-0.png" and I want to delete the "-0" part. I know I ...
5
votes
5answers
284 views

Is there a way to see the permissions of all the intermediate directories of a path..?

I have a file path.. Is there any single command to see the file/directory permissions of all the intermediate directories in the path..?
9
votes
3answers
3k views

How to run a command when a directory's contents are updated?

There is a directory A whose contents are changed frequently by other people. I have made a personal directory B where I keep all the files that have ever been in A. Currently I just occasionally ...
2
votes
2answers
1k views

Should I end my text/script files with a newline? [duplicate]

Possible Duplicate: What's the point in adding a new line to the end of a file? What is considered better behaviour: to leave the last letter of the last line to be the last byte of a ...
1
vote
3answers
618 views

How do I track all the most recent file changes on my UNIX system?

Say, either for a Debian system or a Red Hat one.
1
vote
1answer
718 views

Permissions for making some some (but not all) files visible directly under a directory

On wikipedia I read the following: The read permission, which grants the ability to read a file. When set for a directory, this permission grants the ability to read the names of files in the ...
1
vote
1answer
610 views

Sticky bit vs setgid for facilitating shared write access

Say two people with different primary unix GIDs share and need to frequently edit the same file. The users are not members of each others' primary unix GIDs, but they are both members of a common ...
2
votes
2answers
1k views

How do I dereference links when extracting from a tar file?

If I have a tar file, bob.tar, which contains real_file and link_to_real_file, in which the latter is a symlink, is there a way to extract the contents of bob.tar so that link_to_real_file will not be ...
4
votes
2answers
1k views

Counting files in leaves of directory tree

I came up with the following snippet for counting files in each subdirectory: for x (**/*(/)); do print $x; find $x -maxdepth 1 -type f | wc -l; done The command outputs consecutive pairs (one ...
2
votes
3answers
2k views

find top 10 latest modified files

How do I get the last 10 files that were modified on my system. I have a system where its disk usage is maxed out I am not sure which files is increasing rapidly. I have a mysql instance stored on a ...
9
votes
4answers
4k views

Is there MD5 (or similar) to a folder? How to verify if two folders are equal?

I'd like to find an md5sum (or similar calculation) of a folder without compressing it into an archive. For example, if in the folder MyFolder we have the files 1.txt, 2.txt and 3.txt, containing: ...
9
votes
6answers
10k views

Shell script for moving oldest files?

How do I write a script for moving just the 20 oldest files from one folder to another? Is there a way to grab the oldest files in a folder?
1
vote
1answer
346 views

Check a bash variable against a file

I have a bash variable ($HTTP_COOKIE) which contains a string. I want to check if this string matches the content of a given file (token). I'm working on a busybox linux. How should I do?
5
votes
3answers
4k views

Write access without read access

Is it possible for a user to have a write access to a file and not be able to read it? How is it possible? I tried the following commands: debianbox@debian:~/posix/io$ touch filetest ...
9
votes
2answers
5k views

Why can't I have a folder and a file with the same name?

I've never had this problem before, but for some reason, I can't rename my folder to packages/. This is the structure: root - packages_old/ - packages When I try to rename the folder with ...
16
votes
3answers
10k views

Getting size with du of files only

How can I get the size of all files and all files in its subdirectories using the du command. I am trying the following command to get the size of all files (and files in subdirectories) find . ...
15
votes
5answers
26k views

Linux ls to show only filename date and size

How can I use ls in linux to get a listing of filenames date and size only. I don't need to see the other info such as owner or permission. Is this possible?
1
vote
1answer
2k views

How to trace file locks (per directory)

I'm quite new to Linux and I have not really a clue on how to do this. I've got a directory and I'd like to monitor (output to shell) when a file inside that directory get's a file lock and when it ...
4
votes
0answers
160 views

Repeatably generate a read error for testing? [duplicate]

I'm trying to test the error handling in some software, in particular what happens when an error occurs reading from a file or pipe. Is there a simple way to send a certain amount of data to stdout ...