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

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0
votes
1answer
214 views

Having trouble executing a compiled C program

I am running an Ubuntu v10.04 through VirtualBox. To test the persistence of files I create in the virtual machine, I wrote a very basic C program. When I shutdown the virtual machine and restart it, ...
1
vote
1answer
246 views

File size conflict

I am new to UNIX and have a doubt about file size in UNIX (AIX). ls -ltr shows me fileA size as 59096. As per my knowledge this is in bytes ,so it is nearly = 0.06 MB However, a script which should ...
2
votes
2answers
575 views

Matching two files for similar first line

I have 2 set of files. File one contains ID's ex: 1111 2222 6666 3333 4444 File two contains ID and username: 1873 Neil 1111 Roger 7632 Tim 3333 Oscar 8723 Greg 4444 Roy 6666 Patrick I want to ...
5
votes
2answers
2k views

A command line utility to visualize how fast a file is growing?

I want to grok how fast a particular file is growing. I could do watch ls -l file And deduce this information from the rate of change. Is there something similar that would directly output the ...
4
votes
3answers
240 views

How to prohibit from changing an owner of modifiable files?

I sometimes need to run a Qt Creator from root. After that, some config files of Qt Creator suddenly have a root as an owner. Therefore when running Qt Creator as user, I am getting nag warnings about ...
2
votes
2answers
891 views

dynamic file system with hooks

Is there anyway in linux (I don't care which distribution or flavor) to have a dynamic file system with read/write hooks? For example I would like to mount a dynamic file system at /dynamic and ...
4
votes
2answers
813 views

Get the complement of the result of an ls command

Let's say I have a directory with multiple files, all of which are either binary files (files with no declared extensions) and source files (.c extension). I do this: $ ls and get: README.md ...
18
votes
3answers
9k views

Pseudo files for temporary data

I often want to feed relatively short string data (could be several lines though) to commandline programs which accept only input from files (e.g. wdiff) in a repeated fashion. Sure I can create one ...
3
votes
3answers
7k views

Determine whether a particular file is compressed

How to know in Linux whether a particular file is compressed or not using a command?
3
votes
4answers
1k views

Unix - how to fetch files based on the part of a filename that is date

Say I have files say like AA_XX_20111208 AA_XX_20111207 AA_XX_20111206 AA_XX_20111205 AA_XX_20111204 AA_XX_20111203 So using the date part, how can i fetch previous 2 month files ? For e.g. this ...
1
vote
1answer
1k views

Reading the contents of the file and splitting using ksh

We're using a ksh script for installing one product. I've another config file, I'd need to read this configuration file from my main script Content of the Configuration file: ...
2
votes
3answers
365 views

How to cp or rm files based on ownership / permission

After a problem with spam, I stopped postfix postfix stop and checked through the mailq manually to find hundreds of thousands of unsent spam. The spam was sent from one of the sites hosted ...
7
votes
2answers
3k views

Resolving symbolic links (pwd)

Say I do the following: cd /some/path ln -s /target/path symbolic_name If then do: cd /some/path cd symbolic_name pwd I get: /some/path/symblic_name and not: /target/path Is there a way to ...
0
votes
0answers
18 views

audit dir content removing / deletion [duplicate]

Possible Duplicate: Is it possible to find out what program or script created a given file? A peasant needs thunder to cross himself and wonder. A few minutes I get lost wp blog content the ...
3
votes
2answers
23k views

Single command to check if file exists, and print (custom) message to stdout?

Hope it's OK to note this, now that I've encountered it: I'm already aware that one can test for file existence using the test ([) command: $ touch exists.file $ if [ -f exists.file ] ; then echo ...
13
votes
2answers
475 views

How can I be sure that a directory or file is actually deleted?

I know that most files, when deleted, aren't actually removed from the disk, and can be recovered later. How can I ensure that a directory I had deleted will actually be removed from the disk? Are ...
2
votes
1answer
891 views

why cannot rename subdir when parent dir owner is not the same user [duplicate]

Possible Duplicate: Can’t rename a directory that I own I am trying to understand why when a dir X is owned by user A cannot rename it when parent dir of X is owned by user B. Can anyone ...
2
votes
2answers
473 views

Distributing thousands of files over subfolders

I have a folder A with hundreds of thousands of files. I would like to move these files to new subfolders S_i, with, say, 100 files in each (the last folder may have less than 100 files) In other ...
6
votes
1answer
3k views

Rename current file in vim

Searching over net shows :f filename would rename the current file in vim. But executing this and later exiting vim, shows the new file with all the contents and also the old file is present with the ...
1
vote
1answer
1k views

Outputting last modification date to another file?

I'm trying to read the number of lines in a file, and the last modification date of that file (e.g. if it was last modified Jan 18, 2013, it should output 2013-01-18), then append the data to the ...
2
votes
5answers
487 views

Copy Sequential Files

I have 12 files named dmp_000, dmp_001, etc, all the way to dmp_011. I would like to copy all of them to rdmp_000, rdmp_001, and so on, sequentially so the numbered files coincide. There must be an ...
2
votes
2answers
93 views

Separating a file with embedded header records into two files

I would like to separate the following example text file into two separate files based on the embedded header record using a unix script: CSI 447907 890947967201270 776666666 B 771555555 B ...
3
votes
1answer
62 views

Emulating a file

I have certain application that opens a file with given path (presumably with fopen or derivative), reads the file, possibly writes to it and closes it. I have no control over this application other ...
1
vote
1answer
133 views

Unsure about the behaviour of my script when writing to log file

I have a very simple ksh script and at certain points I want to write to a log file. I use the following commands in two places... print "Directory listing 1:\n" > ${LogFile} ll >> ...
6
votes
2answers
1k views

Is it possible to know who visited my home directory?

Suppose there are many users in a Linux cluster, each of them has his own HOME directory under /home/xxx, with xxx being his user name (or account). If the initial system configuration allows these ...
6
votes
3answers
1k views

How can I open a file in VIM in readonly mode if it already has a swapfile?

When I use the command :e filename to open a file and this file is already opened by another vim instance, I get a prompt asking me if I want to open the file in read-only mode, edit anyway, recover, ...
2
votes
2answers
883 views

Find files given an exact filename with mdfind

Is there a way to ask mdfind to search for filenames with an exact filename ? At some point in a pipe I have this: (filenames are produced here) | while read f; do mdfind -name "$f" | grep -E "/$f"; ...
5
votes
3answers
2k views

Filesize difference of same name folders

Two different folders, have the same name but they have different filesize. Is there any linux command that can compare two folders and tell me the diff in filesize at the same time?
3
votes
1answer
118 views

File- and directory-based workflow

I work at a company where third party contributors transfer files, typically by FTP, to our site. Depending on which account the file is uploaded to, some scripts are triggered and the file is ...
2
votes
2answers
29k views

Easy way to copy lines from one file to another [duplicate]

Possible Duplicate: cat line X to line Y on a huge file Very simple issue but can't seem to find a simple resolution! I have a massive text file from which I only need around 150 lines. ...
6
votes
2answers
2k views

Configuring File Associations in Ubuntu with Wine

Related to this question, I have Ubuntu 20.04.1 LTS. I downloaded PlayOnLinux 4.1.9 (the Precise version) and used it to install Microsoft Office 2010 Pro. PlayOnLinux downloaded Wine 1.5.21 and ...
3
votes
1answer
105 views

Symbolic link starting with .#

I have a symlink in one of my directories that has the following name: lrwxrwxrwx 1 XXXX ZZZ 37 Jan 15 18:18 .#perl.org -> XXX@YYY.com.2980:1344441539 I am wondering what this symlink ...
1
vote
2answers
928 views

ALT+F2 doesnt work in Linux Mint Mate

I am trying to install Sublime Text 2 on Linux MINT (Mate) from this tutorial. http://community.linuxmint.com/tutorial/view/907 and I'm stuck on: Next , to create a menu icon press Alt+F2 and type: ...
3
votes
1answer
525 views

How to create a virtual file that is coupled to a program, e.g. to a `.gz` file via `gzip`?

Given e.g. a gzipped textfile file.txt.gz, how to create a special file file.txt that on reading yields the (interactively) decompressed contents of the .gz file, and on writing a) re-gzips the new ...
3
votes
2answers
2k views

rm -fr not working

I have a directory that was generated by mistake by an application and this directory has a structure that involves more than 2000 directories, one inside a another, something like: Directory aaaa ...
3
votes
3answers
201 views

How secure my server is… should I worry? How to increase protection

I updated my server yesterday to a new version of CentoOS including a new version of DirectAdmin panel. This new installation comes with Brute Force Monitor service. As far as I see, this BFM ...
0
votes
2answers
65 views

Knowing if a directory is modified

I have a server online and I am wondering if there's a way to know if some file on the server is modified or a new file is added to certain directories. For example, I have this ...
2
votes
2answers
80 views

Download copy of file which updates on change

Sorry about the title, I didn't know how to write it - It's kind of confusing. Ok, I am using my Raspberry Pi (Debian) and I store code on this server in which people have access to. My problem at ...
0
votes
1answer
1k views

Shell script to delete all files which are older [duplicate]

Possible Duplicate: Deleting files by age Write a shell script to delete all the files which are "n" of older that current day, where n can be 3days. 2days, or 1 year etc. The above script ...
1
vote
1answer
108 views

How do I give global access to a file in a private folder?

For example, I want all the files in /home/trusktr/Downloads/ to remain hidden from other users, except for one. I tried chmod 777 /home/trusktr/Downloads/someFile.avi but someFile.avi is still ...
1
vote
1answer
486 views

Group permissions ineffective, permission still denied

I've got a problem with UNIX permissions : I'm working under Debian Squeeze, and one of my scripts, run by www-data, needs to move a file, 23550.zip, placed in the home directory of another user, ...
2
votes
1answer
399 views

Compare all text files in a directory, and sort by similarity

In Unix, is there any way to compare every text file in a directory to every other text file in the directory, and then sort each pair of files by similarity (using the diff utility)? There are ...
1
vote
2answers
2k views

How to know recently updated files

If I run iostat -x 1 I saw ocassionally large 5MB to 10MB writes. What files are being written? I want to check the recently created files with size over 5MB for example. How would I do so?
0
votes
2answers
221 views

file command + how to view all results from file command

I use the file command in order to verify if file (PATH) is text/ascii file or encrypted file Because file command have allot of results ( small example in example 1 ) I want to get the all ...
0
votes
2answers
3k views

How to find last deleted files on OpenSuse?

I didn't lock the screen on my OpenSuse Linux and let my girlfriend do all evil things when I was sleeping. Is there a way to find out if she deleted any files from my PC? I was looking at the "Date ...
3
votes
3answers
6k views

Check whether files in a file list exist in a certain directory

The runtime arguments are as follows: $1 is the path to the file containing the list of files $2 is the path to the directory containing the files What I want to do is check that each file listed in ...
1
vote
1answer
532 views

How to set metadata for music files?

In windows music files have metadata like artist name, album name associated with them. How is this metadata stored. Is it stored in file system like other file attributes or is it part of MP3 data ...
43
votes
3answers
12k views

locate vs find: usage, pros and cons of each other

In Linux and Unix systems there are two common search commands: locate and find. What are the pros and cons of each? When one have benefits over the other?
2
votes
1answer
181 views

Find files with specific extension with help of recoll

How to make recoll program to show files with specific extension (for example, *.cpp, *.txt, etc)?
15
votes
2answers
20k views

What are character special and block special files in a unix system?

How are character special files and block special files different from regular files in a Inix-like system? Why are they called “character special” and “block special” respectively?