File name is a name used to identify a file uniquely on given file system.

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72
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6answers
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How does Linux handle multiple consecutive path separators (/home////username///file)?

I'm working on a python script that passes file locations to an scp subprocess. That's all fine, but I'm in a situation where I may end up concatenating a path with a filename such that there's a ...
69
votes
10answers
84k views

Looping through files with spaces in the names?

I wrote the following script to diff the outputs of two directores with all the same files in them as such: #!/bin/bash for file in `find . -name "*.csv"` do echo "file = $file"; diff $...
40
votes
4answers
5k views

unix, difference between path starting with '/' and '//'

In unix/linux, any number of consecutive forwardslashes in a path is generally equivalent to a single forwardslash. eg. $ cd /home/shum $ pwd /home/shum $ cd /home//shum $ pwd /home/shum $ cd /home///...
4
votes
1answer
5k 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. I'...
19
votes
2answers
6k views

What is the difference between “du -sh *” and “du -sh ./*”?

The title says it all. What's the difference between those 2 commands? NOTE: I'm more interested in the * and ./* part.
25
votes
3answers
12k views

When should I use a trailing slash on a directory? [duplicate]

Possible Duplicate: How linux handles multiple path separators (/home////username///file) Most commands I use in linux behave exactly the same whether I include the trailing slash / character ...
43
votes
8answers
36k views

List files sorted numerically

I have a bunch of files from log1 to log164. I'm trying to LIST the directory (sorted) in a UNIX terminal but the sort functions are only providing the format like this: home:logs Home$ ls -1 | sort ...
17
votes
2answers
961 views

Security implications of running perl -ne '…' *

Apparently, running: perl -n -e 'some perl code' * Or find . ... -exec perl -n -e '...' {} + (same with -p instead of -n) Or perl -e 'some code using <>' * often found in one-liners ...
5
votes
5answers
10k views

Stripping directory paths to get file names

What I am doing is converting mp3's with LAME. I already have an old script I wrote that works but I want to add to it this ability--to no longer delete the file but instead save it in a new root ...
12
votes
1answer
3k views

What does *~ mean?

At the end of a makefile I saw rm -f *~ *.class I understand the *.class, but what's *~?
7
votes
1answer
2k views

Best way to remove file extension from a string?

So, I'm using a script I've made to convert videos to the webm format. A certain program calls the script, sending %f which is the full, absolute file name of the video, like this: converter.sh %f ...
28
votes
13answers
12k views

How can I delete a file with no name

I somehow managed to create a file that doesn't seem to have a filename. I found some information regarding how to get more details of the file in the following thread. However, I tried some of the ...
1
vote
1answer
69 views

Redirect a file descriptor before execution

I know that I can change the file a program writes to by interrupting the process in gdb, closing using the file descriptor and then re-opening with the file name I want. Is there a way to do the same ...
75
votes
9answers
5k views

On what systems is //foo/bar different from /foo/bar?

Throughout the POSIX specification, there's provision (1, 2, 3...) to allow implementations to treat a path starting with two / specially. A POSIX application (an application written to the POSIX ...
21
votes
8answers
26k views

Grabbing the extension in a file name

How do I get the file extension from bash? Here's what I tried: filename=`basename $filepath` fileext=${filename##*.} By doing that I can get extension of bz2 from the path /dir/subdir/file.bz2, ...
21
votes
3answers
6k views

Understanding Unix file name encoding

I have a hard time understanding how the file name encoding works. On unix.SE I find contradicting explanations. File names are stored as characters To quote another answer: Several questions about ...
1
vote
6answers
6k views

File extensions and association with programs in linux

In windows we can associate a file's extension with programs. E.g. a file test.pl can be run by the installed Perl interpreter due to the pl extension. In linux though it needs #!/usr/bin/perl as the ...
19
votes
3answers
2k views

Newlines in filenames

I understand and accept the premise that defensive1 shell scripting is both prudent and, in the longer term, more sustainable. Many of the answers to text processing questions here follow this ...
7
votes
4answers
667 views

How can I find a file whose name includes a given string, such as “abcde”?

Within a set of directories, how do I find a file whose name includes a given string, such as "abcde"?
5
votes
2answers
4k views

Why are filenames that start with a dot hidden? Can I hide files without using a dot as their first character?

Initially I thought it was a coincidence, but now I see there's even a tag for it: all hidden file names start with a dot. Is this a convention? Why was it chosen? Can it be changed? Or in other words ...
11
votes
2answers
12k views

What does the tilde (~) mean at the end of a filename? [duplicate]

What is the file with the ~ at the end of the filename for? $ ls # aliased to add flags -rwxrwxr-x 1 durrantm 2741 May 16 09:28 strip_out_rspec_prep_cmds.sh~* drwxrwxr-x 13 durrantm 4096 May 16 14:...
29
votes
3answers
21k views

What charset encoding is used for filenames and paths on Linux?

Does it depend on what file system I use? For example, ext2/ext3/ext4 but also what happens when I insert one of those "joliet" CD-ROMs with ISO 9660? I've heard that POSIX contains some sort of spec ...
40
votes
2answers
3k views

Why do some Linux files have a 'd' suffix?

I am new to Linux. I observed some of the binary files and configuration file name s end with a d. What is reason for putting a d at the end of the file name? Like httpd, ospfd, pppd, syslogd, ...
20
votes
6answers
6k views

Portable way to get script's absolute path?

What is a portable way for a (zsh) script to determine its absolute path? On Linux I use something like mypath=$(readlink -f $0) ...but this is not portable. (E.g., readlink on darwin does not ...
17
votes
4answers
10k views

bulk rename (or correctly display) files with special characters

I have a bunch of directories and subdirectories that contain files with special characters, like this file: robbie@phil:~$ ls test�sktest.txt test?sktest.txt Find reveals an escape sequence: ...
19
votes
4answers
41k views

Is space not allowed in a filename?

It is said that on Unix and Linux in general, you should avoid having spaces in a filename of a file (ordinary file, dir, link, device file, ...). But I do that all the time. For a filename with a ...
10
votes
2answers
3k views

why inode value changes when we edit in “vi” editor?

When I edit a file in "vi" editor the inode value of the file is changing. But when edited with cat command the inode value is not changing.
10
votes
1answer
4k views

Autocomplete of filename in directory

This question is quite similar to this one, but I can't understand the solution. I also know this tutorial, but still I am unable to understand what I am doing wrong. I am trying to autocomplete the ...
10
votes
2answers
4k views

Several questions about file-system character encoding on linux

Due to a lot of file exchange works between Windows (GBK encoding) and Linux (UTF-8 encoding), it will encounter character encoding issues easily, such as: zip/tar files whose name contains chinese ...
8
votes
2answers
6k views

Manipulate file name piped from find command

I'm relatively new to Bash and am trying to do something that on the surface seemed pretty straightforward - run find over a directory hierarchy to get all of the *.wma files, pipe that output to a ...
12
votes
2answers
1k views

Shell filename pattern that expands to dot files but not to `..`?

Recently I had a little mishap caused by a shell pattern that expanded in an unexpected way. I wanted to change the owner of a bunch of dot files in the /root directory, so I did chown -R root .* ...
9
votes
4answers
2k views

Glob with Numerical Order

I have this list of pdf files in a directory: c0.pdf c12.pdf c15.pdf c18.pdf c20.pdf c4.pdf c7.pdf c10.pdf c13.pdf c16.pdf c19.pdf c2.pdf c5.pdf c8.pdf c11.pdf c14.pdf c17.pdf c1.pdf ...
7
votes
2answers
2k views

file descriptor vs. file name

I was wondering what differences and relations are between file descriptors and file names. Are they all used to access files? If yes, in the same way? For example, /dev/fd/0, /dev/stdin, and /proc/...
4
votes
2answers
663 views

Is there a user interface in Emacs allowing one to “grab” the buffer's filename conveniently?

It happens quite often that I want to use the path of the file opened in a certain buffer in Emacs (either the full path or the basename) in another place (a buffer or a different X program, say, a ...
14
votes
4answers
3k views

Is it correct to use certain special characters when naming filenames in Linux?

Is it correct to use certain special characters, as +, &, ', . (dot) and , (comma), basically, in filenames. I understand that you can use - and _ with no problem, but doing some research I have ...
13
votes
2answers
8k 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 ...
9
votes
3answers
2k views

What are ./ and ../ directories?

Simple question, but I'm not sure where to look and google doesn't respond to periods and slashes. I'm just trying to count the # of files & directories in the current directory (not including ...
8
votes
4answers
376 views

dirname and basename vs parameter expansion

Is there any objective reason to prefer one form to the other? Performance, reliability, portability? filename=/some/long/path/to/a_file parentdir_v1="${filename%/*}" parentdir_v2="$(dirname "$...
4
votes
6answers
2k views

How to delete a NTFS filesystem file whose name contains “:”?

I backup some of my Linux files in a NTFS removable hard disk several days ago, this time I need to remove those files. But I find it difficult since: On windows, it complains that "Could not find ...
4
votes
1answer
339 views

How can there be a directory named `~`?

I was trying to test out this buggy/new tool to see how it works, and it prompted me to choose a directory to use for stuff I am doing. From the directory ~/Code/indep, I typed in ~/Code/indep/tarbell....
20
votes
3answers
3k views

Tilde (~) inside working unix directory

So, Im working in a UNIX environment and I noticed that inside my working directory, which is miles miles away from my UNIX home, there is a ~. Now, once in the past, I did rm -rf ~ from my working ...
8
votes
2answers
17k views

Extract file name from path in awk program

I have an awk script and I have passed a CSV file to it. awk -f script.awk /home/abc/imp/asgd.csv What am I doing is to get FILENAME within script.awk. FILENAME gives me the whole path. As I am in ...
7
votes
2answers
4k views

working with filenames in a different encoding over ssh

I'm ssh'ing to a remote system where a different encoding for the filenames (and for the users' locales) has been used. And this causes some problems. Problems solved by matching the locale settings ...
6
votes
1answer
326 views

Variable in sed

I have a file that contains filenames with absolute path. In the middle of that path, is a variable directory, whenever I hard code the variable part, it works fine, but when I replace it with the ...
3
votes
3answers
133 views

Why are square brackets preventing shell expansion?

'4800483343' is a directory, and 'file1' & 'file2' are two files in it. Why is the following happening? $ ls 4800483343 file1 file2 $ md5sum 4800483343/* 36468e77d55ee160477dc9772a99be4b ...
2
votes
1answer
256 views

Append same timestamp to multiple filenames

I have several files that I ftp each hour. The receiving system needs to have some sort of identifier that they came from the same batch, so I would like to append a timestamp to the filename. That ...
2
votes
2answers
1k views

Trouble with mv and adding the date

I want to be able to move $oldfile to my backup folder and add the date to the file name. So I tried this... mv $oldfile /home/u0146121/backupfiles/$oldfile_$(date +%F-%T) This just gives me this ...
2
votes
2answers
604 views

Script to convert filenames to lowercase depending on extension

Script to convert filenames to lowercase depending on extension
1
vote
2answers
413 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
1answer
198 views

How to get a list all the “aliases” of a file (including of type directory) efficiently?

How can one get the list of all the aliases of a file (including of type directory) efficiently, given that a file: may have multiple hard links, multipe soft links, multi-level soft links may be ...