Help with Linux using ubuntu 5. What command, issued from your home directory, w

Question

Help with Linux

using ubuntu

5. What command, issued from your home directory, will output the number of directories and files in /usr/share/man which contain at least one digit in their extensions?

ls -ld *.[0-9] /usr/share/man

didnt work

7. What ls command used with a globbing expression will list those files in /tmp/notes which contain three fours in the basename portion (pre-extension part) of the filename? (Must use globbing expression--no grep!)

tried ls *444* /tmp/notes

ls *[444]. /tmp/notes

niether work say directory does not exist then lists the folders entire contents

Explanation / Answer

5.)What command, issued from your home directory, will output the number of directories and files in /usr/share/man which contain at least one digit in their extensions?

Method 1:

We will use the tree feature which is very easy and at the same time very fast in listing all the files and folders under the given folder.

Syntax:

tree directory_path | tail -1

Example:

tree/users/Desktop/User | tail -1

Method 2:

We can also do the same by using find command which will help in listing all the files and folders in the current folder and the wx -l which will count results of find

Syntax

find . -type f -printf . | wc -l

Example

If we are required to find files and folders in Desktop that we will type

find . -type f -printf . | wc -l

7. What ls command used with a globbing expression will list those files in /tmp/notes which contain three fours in the basename portion (pre-extension part) of the filename? (Must use globbing expression--no grep!)

Method 1:

We can use ls followed by *444* as that will list out all the filenames containing 444 it's name

Syntax

ls *444* # will list all the files which contains --444--

More Info:

ls 444*# list all files starting with 444---

ls *444 # list all files ending with --444

METHOD 2:

We can use the tree command also

Syntax

tree -P *444* # will help in listing all files containing --444--

More Info:

tree -P '444*' # will help in listing all files starting with 444---

Hope it helps....

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.