ls command

ETC Homework & Coursework Questions
1

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

  1. The problem statement, all variables and given/known data:
    what is the output of ls -lm and ls -ml? which option takes procedures?
    what is the output of ls -d?

  2. Relevant commands, code, scripts, algorithms:
    ls -lm gives a list of files and directories with comma seperated a linefull.
    ls -ml will give long list of dirs and files
    ls -d will print directories

  3. The attempts at a solution (include all code and scripts):
    my problem in understanding the second part of question. i.e. which option takes procedures? i asked many among my friends. but in vein.

  4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
    Indira Gandhi National Open University, Trivandrum, India, Prof. Arun, MCS-022

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

2

I believe you have a typo, and the question should be "which option takes precedence?". Run

ls -l

then

ls -m

then

ls -lm

and

ls -ml

I think you will see.....

3

sir,
thank you very much. the question they put is which option takes procedures. me also agree with you. that should be precedence. thats what made the confusion.

charu

4

Still, looks like a lapsus... I would call the teacher to clarify...The sentence does not make much sense with "procedure" (but it could be because TGIF!)

5

ls -d is an interesting command. It will always output the answer . (i.e. the current working directory). This is because the -d parameter tells ls to not expand any directories it encounters (and that includes the current working directory).

The commmand ls -d * (or better ls -lad * ) is really useful because it outputs the contents of the current directory (files, directories, whatever) without expanding any subdirectories it encounters in the current directory.

To stress. ls -d does NOT just select directories. There is no ls command which filters directories, files or whatever. Use the find command for that.

Try it.