Logical entities that contain data in a filesystem. Use this tag if your question: is about programs that create files (e.g. gzip, tar, zip); deals with characteristics of files (permissions, size, path/location); or is about management of files (renaming, listing, moving, removing). For operating ...

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1answer
184 views

In shell script, execute a command only if the source is newer than the target

I'm looking for a simplified version of this: dep=0 if [ ! -e targetfile ] then dep=1 elif [ targetfile -nt sourcefile ] then dep=1 fi if [ $dep -eq 0 ] then echo "Already up to date" ...
0
votes
3answers
262 views

Which of the following files are true orphan (lost) files and can be safely removed?

I am using a script called lostfiles to list all orphaned (lost) files which do not belong to any package on my Arch Linux system. Whilst for most files I am fairly sure that I can safely delete them ...
0
votes
2answers
297 views

Using Pipeline to Direct Files to Program that Opens Them

I have a Music folder, in which I have some music tracks, which aren't organized too well. Thus, if I want to find a particular track, I usually type: ls Music | grep <keyword>, where ...
0
votes
1answer
999 views

How to hide file size using ls command

I need to list some files in a directory using the ls command, but I need to also to hide the file sizes. How can I do that with the ls command?
3
votes
1answer
3k views

Hang during 'touch' operation on NFS mount

I have two NFS clients mounted to an openfiler 2.99 NFS share at 192.0.2.3: 192.0.2.1 mounts 192.0.2.3:/mnt/nfs01/volnfs01/share01 with ...
1
vote
4answers
376 views

thoroughly find all links (hard and symlinks, and any combination thereof) leading to a file/dir

I read "most" of the proposed questions, but I believe they all miss the complexity of the right answer. I want, only using "basic" commands (for maximum portability) (i.e., something that would work ...
5
votes
1answer
129 views

How do I find the full history of a file?

I need to know the full history of a file, like if someone changed or moved it to some other places since the time when it is created.
4
votes
3answers
129 views

Disallow File IO for a process except for FIFOs

How do you start a process that cannot do any file IO (opening / closing files, creating / deleting files, reading / writing files, etc.), except to read and write to pre-created FIFOs? (chroot will ...
7
votes
4answers
214 views

Clean way to temporarily replace a config file?

I use a drawing program called Inkscape, which has both a GUI and a command line interface. When used on the command line, it has a large number of options that can only be controlled through a ...
1
vote
2answers
796 views

Display the number of bytes, words and lines in a file

I want to create a shell script df. As, I want to type in df name_of_file and then I can get the contents of the file. If the file name is in the directory, I want it to show its contents. If not, I ...
3
votes
3answers
1k views

Find directories without music files

My ~/Music/ directory is actually full of "empty" directories I want to clean. I say "empty" because this directories actually contain files, some contain old cover image files or Thumbs.db files. I ...
2
votes
2answers
1k views

How do I trigger a script when a folder is updated in Solaris 5.10?

We are trying to write a script to move away files as soon as they drop in a folder. One way of achieving this is running rsync in a script on cron scheduler. The problem with this approach is the ...
3
votes
2answers
1k views

Cannot remove file on NTFS partition, event as root [duplicate]

I have a dual boot system, and use a NTFS partition as universal storage between Windows 7 and Ubuntu. Lately, that partition has been throwing CHKDSK prompts on Windows boot, so I thought it was a ...
3
votes
2answers
3k views

How to find frequency of occurrences of strings contained in a file?

I have a file that contains a list of URLs of the form EDIT http://www.google.com/absd/siidfs/kfd837382$%^$&, www.google.com, google.com yahoo.com/list/page/jhfjkshdjf... I ...
1
vote
1answer
89 views

Get last changed content since last read

How can I get the last changed content of a file, since its last read? Something more precise that this: tail - <nr >file_1.txt >file_2.txt where file_2.txt gets the last modified ...
1
vote
2answers
598 views

List files based on the date and time in the file name

I want to automate one task in UNIX and make one script. There is a directory in which everyday 2 files come and that files come anytime in between 10pm to 1am. The file name is something like ...
4
votes
1answer
223 views

Map file to URL

I'm looking for a way to do something like this: some_tool --go-to-background http://server.com/~me/uber_vimrc ~/.vimrc After which, reading ~/.vimrc would give the data downloaded from that URL. ...
13
votes
4answers
3k views

How am I supposed to edit files on a network with Vim?

Currently I'm doing it by SSHing into a server, and executing Vim on the server. This has the benefit of not having to deal with cumbersome syntax of opening files from a remote server over SCP, and, ...
2
votes
1answer
794 views

tar and if-statement

I have a script that check if a file exist inside a tar file but something's wrong because it always go to the else part of the script. I am pretty sure that it shouldn't be that way. The date is in ...
1
vote
1answer
1k views

Delete all jpg in a folder that are smaller than specific width/heigth [duplicate]

I have restored with photorec about 7.500 jpg's. I have moved them all in one folder. A big portion of them is thumbnails. But i can't just go on and delete lets say all of them that are smaller than ...
-1
votes
1answer
384 views

Select a range of files from directory structure /year/month/date.db

I have databases stored in the directory structure year/month/date.db an example would be db/2013/10/15.db I need to be able to select a range of these with a script ("dbSelect ...
1
vote
1answer
604 views

How to recursively move batches of 20 files into numbered folders from folder of 1000 files

I have a folder full of 1000 (or more) files. I want to have a script that creates a numbered folder and then moves the first 20 files (ordered by name) into that folder. It should then do this for ...
1
vote
0answers
143 views

Which Unixes support cross-device filesystem links (in particular for rename)?

Just read the following on the FreeBSD man page for the rename syscall: ... [EXDEV] The link named by to and the file named by from are on different logical devices (file systems). Note that ...
0
votes
1answer
45 views

In which way is a commented line active in a program file?

To solve the bug reported here the solution seems to be commenting, not just adding a certain line in a file - as explained here and here. That is - to make that bug disappear in Xfce, a certain line ...
2
votes
0answers
120 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 ...
1
vote
3answers
133 views

How to rename files and directory with *.~1~ suffix to original name?

I have a directory named underscore.~1~ and several files inside with names like main.js.~1~, index.js.~1~ etc. How can I rename the directory underscore and the files inside to the original names ...
3
votes
4answers
19k views

permissions 755 on /home/<user>/

I am wondering why by default my directory /home/<user>/ has permissions set to 755. This allows other users to enter into directories and read files in my home. Is there any legitimate reason ...
4
votes
1answer
310 views

Use case of providing file-like API to terminal/console

It was explained in this Stack Overflow thread that each logical terminal has a "pseudo-terminal", and that writing to one: $ cat some-file.txt > /dev/ttys002 will cause the data to appear in ...
2
votes
2answers
139 views

Keep track of all files accessed by a specific process?

There has recently been a (publicly unconfirmed) report that Skype is accessing files that it shouldn't be, without user intervention. I have no idea if this is the case with Skype on linux, but it ...
5
votes
6answers
864 views

Delete all files in directories except those whose path are listed in a file

Given the following files: data/A/a.txt data/B/b.pdf ... date/P/whatever.log ... data/Z/z.jpg I would like to delete all files in the data/A/, data/B/, ..., data/Z/ directories except those files ...
2
votes
1answer
126 views

Why does copying from a script screw with my files?

I am at a loss here, trying to find out the reason why a shell script that is basically copying a couple of files and directories from one place to another will result in the content of two of the ...
1
vote
2answers
363 views

multiple conversion bam to bed using bedtools

I have ten .bam files (bioinformatic format) and I would like to convert it to 10 .bed files, but for this conversion I need to use special command bedtools bamTobed -i (input file) > output ...
2
votes
4answers
581 views

How to start processing a file at an offset?

Use case: You've got a multi-GB log file for a whole week, and you need to search for something which happened on Saturday using for example grep. Making an educated guess, you assume that starting ...
2
votes
1answer
3k views

Zabbix-agent: cannot stat 'filename.log': [13] Permission denied

I have installed Zabbix-server and zabbix-agent and trying to add trigger to check log file. But in /var/log/zabbix/zabbix_agentd.log I got the same error every time: 10832:20131008:125634.180 ...
7
votes
3answers
1k views

A virtual file containing the concatenation of other files

Is there a way of creating a filesystem object akin to this: mknod files p cat file1 file2 ... fileN > files but such that it can be seeked in, as if it were a regular file?
5
votes
1answer
5k views

How search for a file beginning with either a or z and ending with a or z?

I attempted find -name 'a*' 'z*' '*a' '*z' but it gave me the error code find: paths must precede expression: z* I know how to find files starting with a though z, or ending with a-z, but not ...
0
votes
1answer
703 views

Get a clean list of files transferred from rsync

I'm trying to get an itemized list of files transferred by rsync. Using the -i and --out-format options, I'm instead ending up with output that looks like this: 3HMP1MO_001.tif 974.68K 100% ...
4
votes
2answers
561 views

Find and differences between -perm /6000 and -perm /u+s

I have been trying to find setuid executables using a `one liner'. The line I first tried was: find / -perm /u+s -type f Then I found a line which is similar but gives different results: find / ...
3
votes
6answers
9k views

Find files by the length of filename

I want to find all files by length of the file names. For example if I want to find files of length 1, such as a.go, b.go. I put: grep '.\{1\}' file But this does not work. What command can I use ...
1
vote
2answers
354 views

What the “+” and “-” buttons do in Pantheon-files (files manager in Elementary OS)?

When setting the view to "Grid" in Pantheon Files (Elementary OS), there is this option to click a "+" or "-" button on folders and files. What is that? After clicking the "+", this may be ...
5
votes
3answers
413 views

Join: Two files - but only append last two columns

Given the files: 1.txt 1, abc, 123, 456, 789 2, lmn, 123, 456, 789 3, pqr, 123, 456, 789 2.txt 1, abc, 123, 000, 000 3, lmn, 123, 000, 000 9, opq, 123, 000, 000 OUTPUT.txt ID, NAME, X, ...
3
votes
1answer
17k views

How to add 'open folder as root' in Elementary OS file manager context menu?

Here it is the solution in order to add the 'open terminal here' into the context menu of Elementary OS' file manager (generically called 'Files' - the executable is pantheon-files). For that ...
3
votes
3answers
805 views

Command for taking a screenshot to a new file

I want to configure a global hotkey to take a new screenshot and save it, say, somewhere inside my home folder. I can take a screenshot with ImageMagick with this command: import screenshot.jpg ...
8
votes
2answers
6k views

File Permissions mode ending in @ or +

I was changing file permissions and I noticed that some of the permissions modes ended in @ as in -rw-r--r--@, or a + as in drwxr-x---+. I've looked at the man pages for chmod and chown, and searched ...
8
votes
5answers
17k views

monitoring file changes + process access to files

I would like to see what's happening in my app server folders, which files are changed by process x or which *.war files has been changed (replaced/created) in last x minutes. I am software developer ...
1
vote
1answer
6k views

Run .sh file instead of opening it

I am using Zorin OS 7. I want to run a .sh file but I can't seem to be able to—it just opens in a text editor. Also under RMB>open with there is no other option.
3
votes
1answer
92 views

Print out file structure on Unix

Is there a way on unix to print out the file structure, like Bootstrap's getting started page? bootstrap/ ├── css/ │ ├── bootstrap.css │ ├── bootstrap.min.css │ ├── bootstrap-theme.css │ ├── ...
4
votes
1answer
949 views

How to use nemo actions to mount an iso file?

I read these articles: https://wiki.archlinux.org/index.php/Nemo https://wiki.archlinux.org/index.php/Mounting_images_as_user and try use Nemo Actions to mount iso files but nothing happened ...
2
votes
2answers
366 views

Linux shared FTP: one file must not be deleted

Two users: A1:x:1001:1002::/home/A1:/bin/sh A2:x:1002:1002::/home/A1:/bin/sh One group: A1:x:1002: FTP server: fresh install ProFTPd OS: fresh install Ubuntu Server 12.04 One folder (/home/A1) ...
3
votes
4answers
4k views

Wait for multiple files to be finished downloading

I have the following script which checks if there is a file in a folder and if the file is stable (this is for large video file I am receiving). #!/bin/bash cdate1=$(date +%Y%m%d-%T) ...