The command to list the contents of a folder/directory in Unix and Unix-like systems.

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6
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2answers
873 views

Vi can write to file despite file being read-only

The following example show how to create a file with only read permissions. As we can see, when I try to write to this file using the echo command I get, Permission denied. But why, in the case that ...
-2
votes
1answer
16 views

ls -ltr command in UNIX and Linux - Behaviour

Why does ls -ltr show different total? We have same files in both unix and linux environment please refer BELOW UNIX > ls -ltr /A/B/C/ total 2140 -rwxr--r-- 1 demo demo 14415 May 30 ...
0
votes
1answer
29 views

ls linux command: how to filter files in other directories

I know what ls folder/ and ls *abc* do in linux. I want to filter out some files in a specific folder. I tried this: ls folder/ *abc but it does not return correct values. Any idea? Thanks
1
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1answer
25 views

Head waits for full stdin before printing

When one runs ls | head head seems to wait for the full output of the piped command before printing to screen. This is undesirable when the command will take a very long time to run, such as when ...
0
votes
1answer
16 views

Why are filename ordering rules different on graphical/non-graphical linux programs?

Here is the output of an ls: x-15.txt x-1617.txt x-2411.txt x-24.txt x-ae.txt x-afag.txt x-bdaa.txt x-bd.txt Note that x-1617 comes before x-24 and the same ordering rule seems to apply to the ...
0
votes
1answer
90 views

Linux bash command to list hidden files first, then other files sorted by extension

This page: How can I make "ls" show dotfiles first? lets me list hidden files first, but I also wish to sort non-hidden files by "extension" e.g. all filenames ending with ".png" come after ...
1
vote
2answers
113 views

Can `ls` be set to only list the first X files/directories?

I'm trying to make a command which only displays the first 30 files when the ls command is invoked. I found this method... ls | head -30 ... but it ends up spitting out the files in one long list, ...
0
votes
2answers
240 views

du and ls report different directory size?

In trying to verify that a copy-operation completed successfully (or at least that it didn't skip any files), I ran du -b inside the source and destination directory and it showed a difference of ...
4
votes
1answer
172 views

Why does the ls command require a dash before its parameters but for tar command, the dash is optional?

I am new to Ubuntu and I am trying hard to understand the command line. When I want to see the contents of a tar file I use: tar tf tarfile.tar But when I want to see a listing of all file if I ...
-1
votes
2answers
72 views

linux ls -l 5th column header size units?

after I ran this command in my linux terminal, ls -l I get the information listed in long file format. Below is an example of my output: drwxr-xr-x. 10 10011 10011 4096 Oct 14 18:51 ...
0
votes
1answer
35 views

an ssh subsystem that does ls

Normally you create a subsystem by doing Subsystem vim /usr/bin/vim or something like that. So how would I do a subsystem that did ls -la? ie. you call the ls subsystem, it gives you an ls and then ...
2
votes
1answer
253 views

ls -l but not ls --color=never slow on nfs-mounted directory, if simulatenously writing to that directory

when I dump data into an NFS-mounted directory, reading files modes (e.g. ls -l) is several orders of magnitude slower than a plain file listing (e.g. ls --color=never). I would like to understand ...
1
vote
1answer
81 views

Bash - list files within date range

So far I've been basing my efforts around this blog and have come up with: startdate=”201407010000? enddate=”201408010000? touch -t $startdate ./startdatefiles touch -t $enddate ./enddatefiles find ...
0
votes
1answer
39 views

If the permissions on a file were set so that everyone could read from or write to the file, how would that be represented symbolically

If the permissions on a file were set so that everyone could read from or write to the file, how would that be represented symbolically (within the output of an 'ls -l' command)?
0
votes
1answer
111 views

Why doesn't ls show the group name?

When I use ls -l, it does NOT show the group names in the listings. Only the user names. aj@host:/media/storage$ ll total 724 drwxrwxrwx 10 root 4096 Sep 17 18:23 . drwxr-xr-x 3 root ...
0
votes
1answer
37 views

How can I get VIM to maintain the creation date for a file? (OS X)

So whenever I save a file in VIM on OS X, it seems to overwrite the entire thing instead of updating it. If I run ls -tU I can see that the creation date changes and it does indeed update to the last ...
1
vote
2answers
91 views

Is it possible to move last modified files using ls, tail and mv?

I want to move the last 3 modified files from a directory using bash commands. However, I noticed that I can use find in the following way: find . -type f -mtime -0.5 -print -exec mv {} ...
0
votes
1answer
30 views

cd into first/second/third directory returned by ls -d */

Say I am in a directory code: /code /very-long-and-descriptive-name If I want to cd into that directory (or a directory if it comes first in alphabetical order), I can just cd *. Now say I add ...
1
vote
2answers
387 views

OS X Terminal wildcard doesn't work for some paths

Okay, this is weird, hopefully someone here can explain what is happening. I am using OS X 10.9.4 and I want to list files in a directory (and filter them using *) I want to look for zip files in ...
0
votes
1answer
27 views

problematic listing of folder with many files

In ubuntu I have a folder that contains many (~10M) .txt files (around 1-2KB each). Folder is not big by itself (around 400MB) and does not contain subfolders, just the .txt files. I need to list it ...
0
votes
1answer
614 views

FTP.exe ls to local Output File Permission Denied on Local Network

I am trying to access a directory on my Filezilla FTP server using the ftp command in Windows from a local computer on the network, and then put a list of all those files in the directory in a text ...
0
votes
2answers
89 views

Whats the meaning of “???” in ls command output

I am using WD my passport hard disk. when i use ll -l command in my hard drive it shows as below ls: cannot access The.Big.Bang.Theory.S07E15.HDTV.x264-LOL.mp4: No such file or directory ls: cannot ...
0
votes
1answer
79 views

SunOS 5.10 - ignore certain files in ls

I don't know why but I can't execute ls with ignore flag: -bash-3.2$ ls -I '*.log' ls: illegal option -- I Do you know what else can I try?
0
votes
2answers
93 views

How to List Files greater than particular timestamp?

I have a directory in linux which has a list of log files where log files get auto generated if some job runs. Each log file gets appended with the timestamp like "JobName_TimeStamp" UPDATED: ...
4
votes
1answer
97 views

Finding the newest file in a directory with a million files

I'm currently using ls -t | head -1 to get the name of the newest file. But it takes a long time because my directory has a million files. I guess a chunk of time is lost unnecessarily in ls -t when ...
0
votes
1answer
570 views

How to create a fixed size virtual disk with qemu-img?

What's the best way to create a fixed size disk with qemu-img ? I tried doing this., and it always seems to be creating a virtual /growing disk, doing a ls returns the actual small size of the vmdk. ...
3
votes
1answer
100 views

Why is `ls` command not permitted in non-root account even using `sudo`?

I logged into Ubuntu with guest session account, but the ls command is not permitted even using sudo. But... why? Any ideas?
0
votes
2answers
341 views

ls to list files sorted by filename without the extension

I want to list a bunch of files that are sorted by their names excluding the file extension. I have these files in a directory $ls mobility_arXiv.tex mobility_SR.bbl paper-hj-mm.tex ...
0
votes
1answer
43 views

Ignoree a specific file in file count “wc -l”

e.g. I have directory like ABC. And this directory contain following files (it contain number of files i just include 4 fils here) 2014-04-29T06-19-20_17368f93ce.mp4.uploaded ...
2
votes
2answers
266 views

How to list only ordinary files on UNIX

I'd like to list only ordinary files (not directories or symlinks) using ls from GNU tools. So far I have only some hackish greps. Is there an option or better way of doing that? Edit: I need more ...
1
vote
1answer
107 views

Completely hide files on Linux

i was wondering if there's a way to prevent a ls -a command to display certain files to certain user/group The criteria could be: if the file is hidden and the user/group has no read access, then ...
0
votes
2answers
229 views

ls command - long format field separator

Is there a way to use a different field separator for the long output of ls? I have problems in parsing the output of ls -l because some fields, in my case the group, contain spaces. I went through ...
6
votes
2answers
316 views

What is the modification date ls reports for directories in Bash shell?

When I run ls -l in Bash shell, it lists a modification time for both files and directories. As noted in this thread, the modification time for directories does not reflect all of its contents. It ...
3
votes
1answer
146 views

What causes files to use up more more disk space than the file size suggests?

du was showing some drives with much less space than I was expecting, and ls -alh also showed the sum at the top to be a factor of three more than the sum of the individual files. Following this ...
0
votes
0answers
31 views

What does the at sign mean when listing files with ls? [duplicate]

When copying files with cp command on Mac OSX Mavericks and then looking at them ls command I sometimes see an @ sign in the listing. What does it mean please? For example: # cp -v ...
2
votes
1answer
21 views

Search .zip files for sizes

I have a directory with many .zip files. I wish to search through them to match an uncompressed file size (I am trying to find which .zip my file originated in, and the name's been changed). IDEALLY, ...
2
votes
3answers
137 views

Linux - Open nth File LIsted

I'm Ubuntu, I do ls and get a list of files. How would I open the nth file in the list in VIM in reference to its position from the ls command, and not its name? I want to do this cause a directory ...
1
vote
3answers
5k views

Ls command in bash script says 'No such file or directory'

The following is the script I am running #$1 - Argument declare IPATH="sample/" declare F=$IPATH$1 echo $F ls $F The input is ./script.sh "Fil*" The echo output is - sample/Fil* when I run the ...
0
votes
1answer
44 views

Supressing backup files in a ls command not working

How do I suppress backup files displayed in ls? I've already tried - ls --ignore-backup and ls -B Neither suppress the back-up files created by the editors. Am I doing something wrong? or Is there ...
1
vote
1answer
109 views

Find the largest file in directory without size in output

I need to find the biggest file Only one file should be listed Search should work in given directory and subdirectories Output should display absolute path to the file with filename find "$PARAM" ...
2
votes
1answer
111 views

find -mtime fails to return results that ls -l show are there

On a Red Hat Linux system, I have a directory with several hundred files. I wanted to delete all files older than 24 hours. I did the deletion using find . -type f -mtime +1 -delete. Trivial stuff, ...
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3answers
108 views

Show thumbnails in Mac terminal?

Some time ago I've googled nice screenshot of Mac terminal How it can be possible? Special terminal application or special settings of ls?
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votes
2answers
74 views

Output of ls command

22387281 -rwxr-xr-x 1 john ce0814 8936 5 Oct 13:54 frk 22379635 -rw-r--r-- 1 john ce0814 322 5 Oct 13:53 frk.c 22445178 -rwx------ 1 john users 4 7 Oct 12:05 log.txt What are the first and third ...
0
votes
3answers
819 views

Get the last file name in a variable in bash?

In a directory, I have the following files: myfile_v01.txt myfile_v02.txt myfile_v03.txt How to make a bash script that detects the value of the last version and put the filename of this last ...
0
votes
1answer
2k views

List files of folder page by page with LS command

I'm wonder if there is some way to list all files of a folder by ls, I know how to use ls for a folders which are small but if list of files doesn't match with the screen size what should I do? there ...
0
votes
2answers
389 views

Unable to get ls to recognise LS_OPTIONS or LS_COLORS?

Trying to get --color=auto as the default ls argument. $ ls --version ls (GNU coreutils) 8.21 … $ echo $LS_COLORS ...
2
votes
2answers
790 views

In linux, how do you get a total size of a folder for files that are 1MB and up

Hi im doing some cleaning up on my server and i want to know how would i get the total size of a folder of files that are 1mb and up and also 1mb and below. I got as far as: ls -lh | grep 'M ' But ...
2
votes
1answer
2k views

How to make `ls` color its output by default, without setting up an alias?

I don't want an alias (alias ls='ls --color'), and I had previously set this up on Mac OSX using CLICOLOR environment variable which magically brought colors to ls. Now I am on Linux (Arch x86-64) ...
1
vote
2answers
42 views

Subdirectories in prompt?

I'm working on making my prompt as useful as possible. Right now, it contains the date, time, and directory, along with a colored divider line so I can easily see where each batch of input starts. I ...
0
votes
2answers
116 views

What does the * mean next to a filename in the ouput of the command ll? [duplicate]

I have a doubt related the output of ll command. When, in my shell, I execute the ll command I obtain this output: -rwxrwxr-x 1 andrea andrea 104215 ott 15 15:56 atmosfs* Why I have the * next to ...