what are the commands used to see a list showing username and their filename

erudite · 03-07-2012, 10:05 PM

Hi there..I am completely new to Linux.I am doing internship in a company where my team expects me to do Shdell scripting..I have just started learning.MY first assignment is that in the login server..in a particulao directory, a folder has certain files.when i give "ls -ltr" command it shows the username,filename,time it was created.
All i want to know is that I want to see the list which shows username and their corresponding filename.

What are the commands that are used to do this?
Suggestions would b appreciated.

Thanks

elfenlied · 03-07-2012, 10:22 PM

Code:

for i in `ls`; do echo "$i `stat -c %U $i`"; done

That will output in the following format:
filename owner

erudite · 03-07-2012, 10:40 PM

I dont understand this? whats i? whats 'for'..it says "for:command not found" when i executed

elfenlied · 03-07-2012, 11:03 PM

Where are you running this? There is no single command that will just give you those two bits of information, there are several ways to do what you're after but you have to combine several commands to give you the required output.

What operating system are you running ?

Also to answer your questions, "i" is a variable. The for command is a conditional bash statement. It's fairly standard an should work on most *nix shells that I know of.

erudite · 03-08-2012, 12:15 AM

this is on the linux server.we use bash shell

'for i in ls -ltr'---> when we use this command the value for i will be the no.of files in the directory?will it automaticallly b set?

Reuti · 03-08-2012, 07:01 AM

To shorten the command: there is no need to use the ls command for the arguments of the for loop, an asterisk would assemble the same list of files. And as stat accepts more than one file as argument, this can be used directly:

Code:

$ stat -c "%U %n" *

Both ways might have the flaw to fail, if the command line gets to long due to the number of files inside the directory.

devinwhite717 · 03-16-2012, 08:33 AM

Here you can find the most used linux commands

chrism01 · 03-18-2012, 08:35 PM

See also
http://rute.2038bug.com/index.html.gz
http://tldp.org/LDP/Bash-Beginners-G...tml/index.html
http://www.tldp.org/LDP/abs/html/

Given your original qn, you've been thrown in the deep end.
You really need to start reading those links; use the 1st (Rute tutorial) as a guide, and use the other 2 a references for any cmds mentioned.

SecretCode · 03-19-2012, 07:05 AM

To further your learning of bash

...

elfenlied's original command would fail if there are file names with spaces in them. Direct use of stat as suggested by Reuti would address this, but if you wanted to use a for loop this will do it - note the in * and the quotes around $i in the stat command:

Code:

for i in *; do echo "$i `stat -c %U "$i"`"; done

Another solution would be to use find.

Code:

find . -type f -printf "%u %f\n"

This is not as good a solution to your specific requirement, but a very good thing to learn!