The ls command lists the contents of a directory.

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5
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6answers
2k views

Strange case: Text file that exist and doesn't exist

I'm completely puzzled about a problem with a single plain text file in my system fedora 12. I used a known software in bioinformatics, maker, to produce lots of plain text files and one of them it ...
0
votes
1answer
172 views

Linux can't read and write, but windows can

I have a hard drive with a lot of back up files, that were created by PhotoRec. When mounting it with a windows computer I can read all the files perfectly fine. Under linux I get an error when ...
4
votes
2answers
7k views

How to list ALL directories according to their size? [without including the parent directory]

I have a bunch of random folders, some of them are hidden (beginning with a period). I want to list all of them, sorted by their sizes. I have something on the lines of this in mind: ls -d -1 -a */ ...
1
vote
2answers
43 views

How do I find a files directory?

I am looking for a specific file in OS/X. I can see the file by using: ls -alR | grep "mkmf.*" This shows my that the file exists. How do I find what directory the file is located. Many thanks ...
2
votes
1answer
30 views

Regarding identical copies of gedit files

When ever I save a gedit file in a directory, two copies of it get saved with identical content. Ex: If the gedit file is named as file_name and saved in Home directory then when u ls the Home ...
3
votes
2answers
150 views

exit a script if an ls line did not find any match

I am writing this script that have this line: ls -lrt /dir1/dir2/filename*.txt | tail -1 | awk '{print $9}' | read variable What I wanted is to exit the script (without using if-statement) if it ...
5
votes
3answers
1k views

Sorting ls output by time, when there are too many files for a single invocation

I know that I can sort the output of ls by time with the -t option. I know that when I have so many files that they don't fit in a single ls invocation, I can normally use xargs (or find ... -exec ...
26
votes
12answers
6k views

What's the most resource efficient way to count how many files are in a directory?

CentOS 5.9 I came across an issue the other day where a directory had a lot of files. To count it, I ran ls -l /foo/foo2/ | wc -l Turns out that there were over 1 million files in a single ...
3
votes
3answers
2k views

Where is “showing the output of the 'ls' command vertically” documented?

I found out it's possible to show the output of the ls command vertically using the -1 switch: $ ls -1 But couldn't find it in the manual of ls. Is it a secret option?
17
votes
4answers
27k views

Why is Debian's root shell colorless?

Are there any security concerns? What is the best way to enable it?
13
votes
4answers
695 views

Why does ls accept duplicate switches?

I'm curious - is there a difference between ls -l and ls -lllllllllllllllllllllllllllll? The output appears to be the same and I'm confused on why ls allows duplicate switches. Is this a standard ...
1
vote
3answers
672 views

Why is ls command slow to interrupt on NFS directory with lots of files?

I noticed in directories with lots of files on NFS if I do ls * then hit Ctrl-C it can take a while ( say 20 seconds ) before ls comes back. Why? Can ls command be fixed to be more responsive?
3
votes
1answer
76 views

Fine-tune LS_COLORS for directory suffixes?

I’m fine customizing most settings in LS_COLORS. I don’t need help customizing the colors for different file suffixes. What I would like to do is configure special colors for certain directories, ...
0
votes
1answer
2k views

ls command - list files containg speccific string in file name and belong to specific type

I am new to linux. Is it possible for a ls command to return a list of files containing "PRO" in its file name and belong to pli file type. I have researched and identified that ls -c -lt *.PLI will ...
7
votes
2answers
987 views

Which is more efficient, ls or ls -l?

As I understand, the ls command calls getdents, which returns up to x number of directory entries. Are there any other system calls involved? If I run ls -l, are there any more system calls? I am ...
16
votes
6answers
19k views

How to match case insensitive patterns with ls?

I would like to list all files matching a certain pattern while ignoring the case. For example, I run the following commands: ls *abc* I need to see all the file that have "abc" as a part of the ...
1
vote
1answer
328 views

Piping the output of ls or tree to less loses colors? [duplicate]

tree and ls can distinct file types by coloring filenames differently. tree and ls often output a long list of files (including directories), so I pipe the stdout output to less. But less doesn't ...
0
votes
3answers
448 views

List files of certain type under a dir?

If you want to list just directories (in the present directory) use ls -d */ What if you want to list just ordinary files, just executable files, or just soft links, or files of any other type? ...
0
votes
0answers
15 views

What are differences between directory order and alphebetic order with `ls`? [duplicate]

What are differences between directory order (-U) and alphabetic order (by default) with ls? They return the same order of a dir's contents to me.
3
votes
1answer
202 views

The -F option for ls

For command ls -F, --classify append indicator (one of */=>@|) to entries Wikipedia says * represents executable and / dir. Regular files are not followed by any of the above ...
3
votes
2answers
227 views

Valgrind /usr/lib files are not regular Linux files

The problem that I encountered today (on an embedded device with Linux) is that some files (specifically, the Valgrind /usr/lib files) are behaving very strange and they are not copy-able with scp ...
10
votes
1answer
3k views

What does a dot after the file permission bits mean?

I performed an ls -la on directory on my CentOS 6.4 server here and the permissions for a given file came out as: -rwxr-xr-x. I understand what -rwxr-xr-x means, what I don't understand is the . ...
1
vote
2answers
2k views

-bash: cd: .ssh/: Permission denied

When I type in cd .ssh in terminal, it returns with -bash: cd: .ssh/: Permission denied. Now I cannot add my ssh keys to ssh. When I type ssh-add ~/.ssh/idname it says /Users/Dan/.ssh/idname: ...
9
votes
3answers
6k views

How can I display octal notation of permissions with ls - and can octal represent all permissions? [duplicate]

After looking at the man page for ls on my system and searching Google, I see there IS a hack of way to use awk or perl to show octal permissions when using ls, but with bash is there anything more ...
8
votes
1answer
887 views

Why could the size of the “dot” file “.” exceed 4096?

Today I found an "empty" directory with a size of 4MB. It had no visible contents, so I tried ls -lah. This showed me some hidden files (not very large). Searching for the reason why the directory ...
2
votes
2answers
550 views

Difference between `ls -c` and `ls -t`

What is the difference between -c and -t options for the ls Unix command? And how can I sort by date of creation with the ls command?
16
votes
3answers
18k views

Find the owner of a directory or file, but only return that and nothing else

I am looking for a command that will return the owner of a directory and only that--such as a regex parsing the ls -lat command or something similar? I want to use the result in another script.
1
vote
3answers
889 views

dircolors “missing second token”

I'd like to customize the colors of ls and as far as I understand the way to go is with dircolors. I did: dircolors > ~/.dircolors Immediately after this I launch a terminal and get this error: ...
19
votes
3answers
4k views

ls command: what does the first line mean?

When I do ls -l I get this: calico@A000505:~/Documentos$ ls -l total 2020 -rwxr-xr-x 1 calico calico 8559 2010-11-16 11:12 a.out -rwxrw-rw- 1 smt smt 2050138 2010-10-14 10:40 Java2.pdf ...
3
votes
2answers
168 views

Make ls distinguish scripts from binaries in output

Is it possible to make ls distinguish executable scripts from actual compiled binaries? The permissions are most often the same (+x), and with ls -F you get an asterisk suffix (*) for both, so it's ...
8
votes
2answers
2k views

Output ls -l size field with digits grouped by thousands?

It is possible to make ls -l output the size field with digits grouped by thousands? If so, how? For instance: $ ls -l -rw-rw---- 1 dahl dahl 43,210,052 2012-01-01 21:52 test.py (Note the commas ...
12
votes
4answers
24k views

What do the fields in ls -al output mean?

The ls -al command shows the following output; -rwxrw-r-- 10 root root 2048 Jan 13 07:11 afile.exe What are all the fields in the preceding display?
3
votes
4answers
2k views

Sort the output of find -exec ls

Is it possible to the output of find … -exec ls -ls ; sorted alpabetically, by filename? This is my cron command: find /home/setefgge/public_html -type f -ctime -1 -exec ls -ls {} \; This command ...
1
vote
3answers
214 views

Removing a directory that has no files in it

I recently created a username and a group called gamesForAdmin. Since then I deleted it and the folder I made for it is still there: drwxr-xr-x 5 root root 4096 Jul 4 11:28 . drwxr-xr-x ...
2
votes
3answers
309 views

When was a file last opened?

How do I determine, when a file was last opened? I've looked at man ls (using GNU coreutils 8.22) and I don't see anything about this timestamp.
3
votes
1answer
82 views

`echo test?` prints `test2` but `ls test?` prints nothing

I was playing with bash globbing recently and I noticed the following: First, make 2 dirs: $ mkdir test $ mkdir test2 Then: $ echo test? Outputs (correctly): test2 But: $ ls test? Outputs ...
1
vote
1answer
558 views

ls shows a timestamp with no time for a file on NFS

When we create a file on Linux we notice that the timestamp is not visible and the stat on the file shows a time in future, the filesystem is an NFS mount, has anyone seen this before? ...
2
votes
1answer
72 views

limitation on count of records returned by ls -lrt

Is there any limitation on count of records returned by ls -lrt? I am seeing problem of crash in OEL 4.7 environment where my ls -lrt command may return more than 100K records.
2
votes
0answers
118 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 ...
5
votes
2answers
2k views

How do I find the inode of any directory?

There is literally nothing on google that I can find that will help me answer this question. I presume it is passing some other parameter to ls -i?
2
votes
1answer
105 views

List directories with dot directories last, then dot files

I'm aware of the ls option --group-directories-first but that's not exactly what I want to achieve. The output should be: (sorted by name ASC) Directories Hidden Directories Hidden Files
2
votes
3answers
204 views

Strange formatting of date in bash script

I am working on a script to sort my downloads folder by the date the files were created. This is the script I am using: #!/bin/bash cd ~/Downloads for FILENAME in * do if [[ -f $FILENAME ]]; ...
1
vote
1answer
59 views

Why do these 2 find commands give differnt results?

I wanted to see all files modified within the last 10 days and who owned them, so i entered the following to give me an idea how many results would be returned; find . -maxdepth 1 -mtime -10 I then ...
1
vote
1answer
805 views

How to change the output color of ls comman in terminal in OS X and iTerm2?

I know that a similar question has been as in: How to colorize output of ls ? Though, I didn't really understand the answer and couldn't really make it work. However, I have tried something ...
2
votes
4answers
968 views

Get the latest directory (not the latest file)

My folder parent has the following content: A.Folder B.Folder C.File It has both folders and files inside. B.Folder is newer. Now I just want to get B.Folder, how could I achieve this? I tried ...
20
votes
5answers
40k views

How to list all files in the size order

I would like to list all files in the order of big to small in size and the files could be present anywhere in a certain folder.
0
votes
1answer
89 views

How to get the same ls with colors working on both OSX and Ubuntu?

When I want color in Ubuntu I do alias ls='ls --color=always' but on OSX this gives an error ls: illegal option -- - and I need to do alias ls ='ls -G' How can I create an alias with the same ...
4
votes
4answers
624 views

What is the Linux command to display how many file names in the directory end in two digits

What is the Linux command to display how many file names in the directory end in two digits? Using ls with a command like this : ls -l | wc –l *[0-9][0-9]
5
votes
3answers
733 views

Linux command to return all files that start with TEMP but do not end with double digits

What is the Linux command to return all files that start with TEMP but do not end with double digits? I think it should look something like this: ls -l TEMP*[!0-9][!0-9] but the results of my ...
3
votes
5answers
199 views

Look if a folder has some files of certain extention

Lets say I have a file structure: $ cd /home/Desktop $ ls -d */ Abc/ Qwe/ Zxc/ Rty/ $ Now I want to iterate through every directory and look if they have any .pdf files. Could some one please ...