Question

Using Ubuntu OS... help is greatly needed! Thank you.

• Create an alias called "home" that does two things... returns you to your home directory, then does a long listing of all files found there
• Create a file called "Output.txt" that contains the output of the "ls /etc" command
• Using "cat", create a file called "poem.txt" where you enter at least one line of text ("Mary had a little lamb" will do...)
• Using "cat", pipe the contents of poem.txt into the "wc" command to count the number of words
• Using "cat" and "grep", display only the lines in /etc/passwd that has contain your user name
• Display the last 5 lines of the /etc/passwd file

Answer 1

1. code

note: alias store command as variables and execute it on entring alias keyword

alias home='cd ~/; ls -l'

home

code snippet:

anupam@anupam:~$ alias home='cd ~/; ls -l'
anupam@anupam:~$ home
total 1452392
drwxr-xr-x 2 anupam anupam 4096 Aug 20 03:23 '{'$'\177'
-rw-rw-r-- 1 anupam anupam 80564 Jan 21 22:04 0001015090005725058_01132020_02022020.PDF
-rw-rw-r-- 1 anupam anupam 88478 Jan 21 06:10 0183d9dd-cc51-4d47-a43d-6662b56f009c.jpeg
-rw-rw-r-- 1 anupam anupam 96850 Feb 3 11:25 05370021-0a83-43c2-ba3c-bf319e5b6fa7.jpeg
-rw-rw-r-- 1 anupam anupam 304 Feb 5 22:04 1
-rw------- 1 anupam anupam 46092 Jan 28 12:41 1111111111111.pdf

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

command:

redirecting output to a file

ls /etc/ << Output.txt

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

writing to a file

command

cat >poem.txt

type your text and press ctrl +d

head poem.txt

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

counting words from a file

code :

cat poem.txt | wc -w

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

searching for a keyword in a output

anupam@anupam:~$ cat /etc/passwd |grep 'anupam'
anupam:x:1000:1000:anupam,,,:/home/anupam:/bin/bash

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

displaying last lines of a output

code:

anupam@anupam:~$ tail -5 /etc/passwd
geoclue:x:118:124::/var/lib/geoclue:/usr/sbin/nologin
gnome-initial-setup:x:119:65534::/run/gnome-initial-setup/:/bin/false
gdm:x:120:125:Gnome Display Manager:/var/lib/gdm3:/bin/false
anupam:x:1000:1000:anupam,,,:/home/anupam:/bin/bash
cups-pk-helper:x:121:116:user for cups-pk-helper service,,,:/home/cups-pk-helper:/usr/sbin/nologin