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

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2
votes
1answer
40 views

Using `stat` to determine filled blocks

How can I find the number of filled block of a certain file, using the stat function? I have already found the command $(stat -c%b "$FILENAME"), which gives the number of allocated blocks but I don't ...
2
votes
2answers
165 views

React to incoming files in a directory on HP-UX

How can I achieve this logic using a script: Monitor new incoming files in a directory. If files are not received in the directory for 3 hours or if the received file is empty then do something. ...
2
votes
0answers
86 views

Can Linux be configured to wait for USB storage to be reattached instead of returning I/O error

If a usb_storage device is physically detached from an Ubuntu machine while it is still mounted, any attempt to access the file system will produce an I/O error. Is there some way to configure Linux ...
2
votes
0answers
587 views

Show the time as well as the date that a file was modified? [closed]

How can I allow the file browser, in Ubuntu 14.04, to show the time as well as the date that a file was modified? For example, the image shows the day the files were Modified...but I cannot find an ...
2
votes
1answer
681 views

Compare file size of multiple files in an array [closed]

Scenario: Ftp site has 100s of files. Once a day, all the .gz files are copied to an AWS site then renamed. Only the date is kept in the file name. Some of the files corrupted during copy. A txt ...
2
votes
0answers
115 views

Removing duplicate files but ignoring certain lines (e.g. embedded timestamp)

I have a bunch of gzipped text files. I am trying to remove duplicate files (using fdupes) but the problem is these files contain a line that has their timestamp in them, and the files are identical ...
2
votes
0answers
761 views

`crontab -e` sometimes fails with “Creation of temporary crontab file failed”

From time to time crontab -e fails on me on a Ubuntu box. It is the same for all users including the root and crontab -eu <user> under the root. Goes like this on a regular basis, a success here ...
2
votes
0answers
151 views

ls does not show a hidden file (OS X)

I am using lsof to view the list of open files. One such file that it displays open is : Google 3864 malaykeshav 46u REG 1,1 470455334 32578671 ...
2
votes
1answer
1k views

Minimum file permissions to delete a file [duplicate]

To delete a file in Linux: What minimal permissions do we need to set on it? What minimal permissions do we need to set on its parent directory?
2
votes
0answers
53 views

Image set compression

Is there a good open source (not exclusive to Linux) for compression of a set of similar images? I have thousands of documents scanned but I do not access them often. The documents are forms, with ...
2
votes
0answers
137 views

How do I make get-iplayer produce watchable quality without huge filesize?

Summary findings: I'm using get-iplayer v2.82. The files I produce on hard drive are all mp4. I've discovered the following (downloading same TV program in both cases): Using --modes=flashstd and ...
2
votes
1answer
415 views

allow user access via ssh to /var/www/

Context: I am creating a gitolite3 hook for a specific repo, which contains some logic and css foo of my website. so what essentailly happens is Content under /var/www/nginx/ looks like: ...
2
votes
0answers
31 views

File viewer (not manager) with dual pane

I have multiple papers, in multiple directories. let us call the papers A, B, C, D... and I have to write reports often, where I have to answer questions like Q1, Q2, Q3, Q4... Now, what often ...
2
votes
0answers
2k views

NFSv4 which “domain” to put in idmapd.conf?

I'm using NFSv4 but suddenly when the NFS Server got rebooted, all the files on the Clients are having nobody ownerships after the Server is booted and started its whatever services again. Then I ...
2
votes
0answers
97 views

How can I make Krusader show real size of symlinked files?

In the "size" column in Krusader, there is a link's size noted, instead of the size of the actual file. This is the same as what ls -l shows (the full address of the target file, e.g. 64 B instead of ...
2
votes
1answer
56 views

Strange changes in files

I have a very strange problem on one of my servers. I'm not sure if it's completely related to linux because it occurs in php and js files. Today I was trying to backup my databases using phpmyadmin. ...
2
votes
1answer
182 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)?
2
votes
0answers
196 views

Disk filename corruption

Using QNX unix filesystem. The files once written with good file names in a good directory and partition get corrupted in their filenames. Some of the files remain in good shape in the same ...
2
votes
1answer
996 views

Can't see files on my cell phone

I have Samsung Galaxy S2 as my cell phone and Debian Squeeze as my desktop. When I connect them using USB, Debian recognize it and allows to open it with file manager. Problem: it displays only ...
2
votes
2answers
94 views

Print file contents and delete the printed content* from the file

In Linux, from a bash shell, how can I print the contents of a file and remove the content I just printed content from the file? I have a program writing texts to a file repeatedly. On a Linux shell ...
2
votes
4answers
1k views

Editing a file without overwrite permission

Is it possible to set permissions for file to keep it editable but without permission to overwrite? I mean possibility to edit the file with text editor, but denying any attempt to replace the file ...
1
vote
7answers
2k views

Can grep be used for searching files with some string in their names?

I understand that grep can only be used for searching for files which contain a string in their content. Can it be used for searching for files with a string in their names? I read the manpage, and ...
1
vote
6answers
2k views

Program a file to self-destruct at a given time

Does anyone know whether there is a command in linux that can set attributes to file so that the file can disappear after certain time. For example, if I set one attribute to file as "1/1/2015", so ...
1
vote
3answers
187 views

How to add an attribute in a tag in XML file by command-line?

I am trying to add field at the end of tag using sed script. Suppose I have a tag in XML file: <book name="Sed tutorial" price="250"/> Now I want to add field as Book_Width="A" after end of ...
1
vote
3answers
574 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 ...
1
vote
4answers
200 views

change last 10 characters of the base (not extension) of multiple files

I have many files of different lengths but the same extension and I have tried many commands to rename all of them at once. Is it possible to change only the last 10 characters of the base of all ...
1
vote
4answers
2k views

How do i get the latest file from a list of files in a particular directory

I need to get the latest file from a list of files in a particular directory. When I run the script the first time I've copied the list of files in a particular directory to another directory. From ...
1
vote
3answers
999 views

Create directories from a list of files with spaces in name

I have a directory with a list of files in it. All these files have spaces in their names. I would like to create a directory, for each file, with the name of the file except the extension (which is ...
1
vote
2answers
3k views

cp and mv if the file named already exists

What happens when you give the following commands if the file named done already exists? $ cp to_do done $ mv to_do done
1
vote
3answers
2k views

In a Bash if condition, how to check whether any files matching a simple wildcard expression exist?

Stupidly, I had been using a condition like this as part of a script: if [ $(ls FOO* 2> /dev/null) ] # if files named "FOO*" were downloaded then echo "Files found" # ... process and ...
1
vote
2answers
82 views

What and Why? - File Descriptors [closed]

What is a file descriptor? Why do we need them?
1
vote
4answers
540 views

Command substitution grepping ls output causes error

I'm trying to make a tar.tgz file using command substitution There are backups of 17 Aug 2012 -rw-r----- 1 ossec 502 804M Aug 17 2012 BKPMDISINT_i6nir20j.F_bkp -rw-r----- 1 ossec 502 2.7G Aug 17 ...
1
vote
3answers
967 views

Merging files into one also adding a new line between each file

I'm using find . -type f \( -name "*.js" ! -name "*-min*" \) -exec cat {} \; > all.js to merge files together. Unfortunately I don't get a new line after each file but it ends and the new file ...
1
vote
3answers
132 views

Joining files on disk

Say I have several file with the following naming: 000001 000002 000003 ... Each of these files is a csv file (may include escape characters). In total the folder has ~20GB of data. How can I ...
1
vote
6answers
7k views

ls: Do not show directories that match same pattern in wildcard searches, only files

Supposing I have something like the following, a typical business PC situation: drwxr-xr-x 1 whatever whoever 3 Oct 3 16:40 invoices2009 drwxr-xr-x 1 whatever whoever 4 Oct 3 16:40 ...
1
vote
4answers
85 views

Delete all files in a directory

I have a directory which includes some files and some folders containing other files. I'm trying to remove these files in the main directory without touching the folders or their contents. I'm using ...
1
vote
2answers
281 views

How would I change file permissions if the file name has a space in it in linux [duplicate]

I would like to know how would I rename and change file permissions of a file that contains a space in the name on Linux. Example The name of my file is: my file I have tried mv my%20file my_file ...
1
vote
4answers
3k views

Is there a command to list files, exclude sub-directories and display size and date?

Before I begin please assume I have only basic knowledge in UNIX. Basic meaning I have only started reading about it since last week for a work related purpose. I have been experimenting with the ls ...
1
vote
2answers
5k views

Creating an empty file having a variable name in a script

I need to create an empty file using a shell script. The filename will be determined by examining all the files in a directory matching a pattern, say TEST.*, and appending _END to it so that the new ...
1
vote
3answers
127 views

How to change the permission and group-owner of a file at the same time

For changing file permission, I know I could use chmod. For changing group-owner, I could use chgrp. However, if I want to change both permission and owner at the same time, any command I could use on ...
1
vote
1answer
132 views

How to delete file called “-C” [duplicate]

I need to delete the following file which I managed to create with bunzip2: -rw-r--r-- 1 beginner group 67493376 Feb 17 17:30 -C The following don't work rm -rf '-C' rm -rf "-C" My OS is ...
1
vote
2answers
165 views

Sort files into directories named by prefix of file

I have a bunch of files like this 5830_1.png 5830_2.png 5830_3.png 5831_1.png 5832_1.png 5832_2.png I'd like to sort these files all into directories that take the prefix of the file name as the ...
1
vote
2answers
7k views

How do I set Nautilus as default file manager in Elementary OS

Elementary OS uses a program called files as the default file manager. I would like to use Nautilus as my default file manager as used in Ubuntu 12.04 . I have GNOME Nautilus 3.4.2 installed on my ...
1
vote
4answers
110 views

Typical text files present on all (most) GNU/Linux systems? [closed]

I may need to develop some short snippets/examples involving reading text files; so I thought - why not use some files that are typically present on all (and since I sense "all" may be a stretch, then ...
1
vote
4answers
96 views

How to find what device a file is on (and use that in a script)?

I want to find out what device my file is on so that I can use it in a script. I can get this far: $ df . Filesystem 512-blocks Used Available Capacity Mounted on /dev/disk0s2 498438976 ...
1
vote
1answer
380 views

Why the inode value of shadow file changes?

I created a hard link for the shadow file. For removing the passwd of the user I opened the shadow file in vi editor and removed the encrypted passwd and then saved. The inode value of the shadow file ...
1
vote
1answer
99 views

Command to list in real time all the actions of a process

I cannot remember this command (and googling was unsuccessful), but there is a way to get the list of actions performed by a process, that outputs something like # listprocessactions -p 1234 ...
1
vote
4answers
903 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?
1
vote
3answers
636 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
61 views

How to know which programs support streaming I/O

As I understand it, programs that support streaming I/O can work with files more than the size of the memory. Is this correct? Is there a way to know which programs support streaming I/O?