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0x00-shell_basics

README.md

0x00-shell_basics

This is the directory for project 0x00-shell_basics. It was part of the project done during the ALX software enginerring programme to learn about devops. Some of the tasks included in the project are:

0-current_working_directory

File: 0-current_working_directory

  • This task involves writing a script that prints the absolute pathname of the current working directory.
  • I used the pwd command for the task.

It works this way:

[hullaah@fedora 0x00-shell_basics]$ ./0-current_working_directory 
/home/hullaah/Documents/ALX/alx-system_engineering-devops/0x00-shell_basics
[hullaah@fedora 0x00-shell_basics]$

1-listit

File: 1-listit

  • This task involves writing a script that displays the contents list of your current directory
  • I used the ls command for the task.

It works this way:

[hullaah@fedora 0x00-shell_basics]$ ./1-listit 
0-current_working_directory  102-tree    11-lists          14-copy_html     3-listfiles           6-firstdirectory  9-firstdirdeletion
100-lets_move                103-commas  12-file_type      1-listit         4-listmorefiles       7-movethatfile    README.md
101-clean_emacs              10-back     13-symbolic_link  2-bring_me_home  5-listfilesdigitonly  8-firstdelete     school.mgc
[hullaah@fedora 0x00-shell_basics]$

2-bring_me_home

File: 2-bring_me_home

  • This task involves writing a script that changes the working directory to the current user's home directory.
  • The requirements was not to use any shell variables
  • I used the command cd ~
  • ~ expands to the current user's home directory. You can confirm by using this command in your shell:
[hullaah@fedora 0x00-shell_basics]$ echo ~
/home/hullaah
[hullaah@fedora 0x00-shell_basics]$

You can test it with:

[hullaah@fedora 0x00-shell_basics]$ source ./2-bring_me_home 
[hullaah@fedora ~]$

3-listfiles

File: 3-listfiles

  • This task involves writing a script that displays current directory content in a long format
  • I used the command ls with the flag -l
  • The -l flag in the ls command specifies that ls should use a long listing format

It works this way:

[hullaah@fedora 0x00-shell_basics]$ ./3-listfiles 
total 84
-rwxr-xr-x. 1 hullaah hullaah   16 Sep 27 21:45 0-current_working_directory
-rwxr-xr-x. 1 hullaah hullaah   35 Sep 27 21:45 100-lets_move
-rwxr-xr-x. 1 hullaah hullaah   18 Sep 27 21:45 101-clean_emacs
-rwxr-xr-x. 1 hullaah hullaah   39 Sep 27 21:45 102-tree
-rwxr-xr-x. 1 hullaah hullaah   34 Sep 27 21:45 103-commas
-rwxr-xr-x. 1 hullaah hullaah   17 Sep 27 21:45 10-back
-rwxr-xr-x. 1 hullaah hullaah   30 Sep 27 21:45 11-lists
-rwxr-xr-x. 1 hullaah hullaah   31 Sep 27 21:45 12-file_type
-rwxr-xr-x. 1 hullaah hullaah   33 Sep 27 21:45 13-symbolic_link
-rwxr-xr-x. 1 hullaah hullaah   28 Sep 27 21:45 14-copy_html
-rwxr-xr-x. 1 hullaah hullaah   15 Sep 27 21:45 1-listit
-rwxr-xr-x. 1 hullaah hullaah   17 Sep 27 21:45 2-bring_me_home
-rwxr-xr-x. 1 hullaah hullaah   18 Sep 27 21:45 3-listfiles
-rwxr-xr-x. 1 hullaah hullaah   19 Sep 27 21:45 4-listmorefiles
-rwxr-xr-x. 1 hullaah hullaah   20 Sep 27 21:45 5-listfilesdigitonly
-rwxr-xr-x. 1 hullaah hullaah   42 Sep 27 21:45 6-firstdirectory
-rwxr-xr-x. 1 hullaah hullaah   50 Sep 27 21:45 7-movethatfile
-rwxr-xr-x. 1 hullaah hullaah   45 Sep 27 21:45 8-firstdelete
-rwxr-xr-x. 1 hullaah hullaah   42 Sep 27 21:45 9-firstdirdeletion
-rwxr-xr-x. 1 hullaah hullaah 2198 Nov 13 12:24 README.md
-rwxr-xr-x. 1 hullaah hullaah  752 Sep 27 21:45 school.mgc
[hullaah@fedora 0x00-shell_basics]$

4-listmorefiles

File: 4-listmorefiles

  • This task involves writing a script that displays current directory content, including hidden files (starting with .), in a long format
  • I used the command ls with the flag -la
  • The -l flag in the ls command specifies that ls should use a long listing format
  • The -a flag specifies that ls should also list hidden files

It works this way:

[hullaah@fedora 0x00-shell_basics]$ ./4-listmorefiles 
total 84
drwxr-xr-x. 1 hullaah hullaah  554 Sep 27 21:45 .
drwxr-xr-x. 1 hullaah hullaah 1006 Oct 25 11:17 ..
-rwxr-xr-x. 1 hullaah hullaah   16 Sep 27 21:45 0-current_working_directory
-rwxr-xr-x. 1 hullaah hullaah   35 Sep 27 21:45 100-lets_move
-rwxr-xr-x. 1 hullaah hullaah   18 Sep 27 21:45 101-clean_emacs
-rwxr-xr-x. 1 hullaah hullaah   39 Sep 27 21:45 102-tree
-rwxr-xr-x. 1 hullaah hullaah   34 Sep 27 21:45 103-commas
-rwxr-xr-x. 1 hullaah hullaah   17 Sep 27 21:45 10-back
-rwxr-xr-x. 1 hullaah hullaah   30 Sep 27 21:45 11-lists
-rwxr-xr-x. 1 hullaah hullaah   31 Sep 27 21:45 12-file_type
-rwxr-xr-x. 1 hullaah hullaah   33 Sep 27 21:45 13-symbolic_link
-rwxr-xr-x. 1 hullaah hullaah   28 Sep 27 21:45 14-copy_html
-rwxr-xr-x. 1 hullaah hullaah   15 Sep 27 21:45 1-listit
-rwxr-xr-x. 1 hullaah hullaah   17 Sep 27 21:45 2-bring_me_home
-rwxr-xr-x. 1 hullaah hullaah   18 Sep 27 21:45 3-listfiles
-rwxr-xr-x. 1 hullaah hullaah   19 Sep 27 21:45 4-listmorefiles
-rwxr-xr-x. 1 hullaah hullaah   20 Sep 27 21:45 5-listfilesdigitonly
-rwxr-xr-x. 1 hullaah hullaah   42 Sep 27 21:45 6-firstdirectory
-rwxr-xr-x. 1 hullaah hullaah   50 Sep 27 21:45 7-movethatfile
-rwxr-xr-x. 1 hullaah hullaah   45 Sep 27 21:45 8-firstdelete
-rwxr-xr-x. 1 hullaah hullaah   42 Sep 27 21:45 9-firstdirdeletion
-rwxr-xr-x. 1 hullaah hullaah 4065 Nov 13 12:33 README.md
-rwxr-xr-x. 1 hullaah hullaah  752 Sep 27 21:45 school.mgc
[hullaah@fedora 0x00-shell_basics]

5-listfilesdigitonly

File: 5-listfilesdigitonly

  • This task involves writing a script that displays current directory contents in long format with user and group IDs displayed numerically And hidden files (starting with .)
  • I used the command ls with the flags -na
  • The -a flag specifies that ls should also list hidden files
  • The -n flag works like -l flag, but lists numeric user and group IDs

It works this way:

[hullaah@fedora 0x00-shell_basics]$ ./5-listfilesdigitonly 
total 88
drwxr-xr-x. 1 1000 1000  554 Sep 27 21:45 .
drwxr-xr-x. 1 1000 1000 1006 Oct 25 11:17 ..
-rwxr-xr-x. 1 1000 1000   16 Sep 27 21:45 0-current_working_directory
-rwxr-xr-x. 1 1000 1000   35 Sep 27 21:45 100-lets_move
-rwxr-xr-x. 1 1000 1000   18 Sep 27 21:45 101-clean_emacs
-rwxr-xr-x. 1 1000 1000   39 Sep 27 21:45 102-tree
-rwxr-xr-x. 1 1000 1000   34 Sep 27 21:45 103-commas
-rwxr-xr-x. 1 1000 1000   17 Sep 27 21:45 10-back
-rwxr-xr-x. 1 1000 1000   30 Sep 27 21:45 11-lists
-rwxr-xr-x. 1 1000 1000   31 Sep 27 21:45 12-file_type
-rwxr-xr-x. 1 1000 1000   33 Sep 27 21:45 13-symbolic_link
-rwxr-xr-x. 1 1000 1000   28 Sep 27 21:45 14-copy_html
-rwxr-xr-x. 1 1000 1000   15 Sep 27 21:45 1-listit
-rwxr-xr-x. 1 1000 1000   17 Sep 27 21:45 2-bring_me_home
-rwxr-xr-x. 1 1000 1000   18 Sep 27 21:45 3-listfiles
-rwxr-xr-x. 1 1000 1000   19 Sep 27 21:45 4-listmorefiles
-rwxr-xr-x. 1 1000 1000   19 Nov 13 12:41 5-listfilesdigitonly
-rwxr-xr-x. 1 1000 1000   42 Sep 27 21:45 6-firstdirectory
-rwxr-xr-x. 1 1000 1000   50 Sep 27 21:45 7-movethatfile
-rwxr-xr-x. 1 1000 1000   45 Sep 27 21:45 8-firstdelete
-rwxr-xr-x. 1 1000 1000   42 Sep 27 21:45 9-firstdirdeletion
-rwxr-xr-x. 1 1000 1000 6038 Nov 13 12:43 README.md
-rwxr-xr-x. 1 1000 1000  752 Sep 27 21:45 school.mgc
[hullaah@fedora 0x00-shell_basics]$

6-firstdirectory

File: 6-firstdirectory

  • This task involves writing a script that creates a directory named my_first_directory in the /tmp/ directory
  • I used the mkdir command for the task

7-movethatfile

File: 7-movethatfile

  • This task involves writing a script that moves the file betty from /tmp/ to /tmp/my_first_directory.
  • I used the mv command

8-firstdelete

File: 8-firstdelete

  • This task involves writing a script that deletes the file betty from /tmp/my_first_directory
  • I used the rm command

9-firstdirdeletion

File: 9-firstdirdeletion

  • This task involves writing a script that deletes the directory my_first_directory that is in the /tmp directory.
  • I used the rmdir command

10-back

File: 10-back

  • This task involves writing a script that changes the working directory to the previous one.
  • I used the cd command

It works this way:

[hullaah@fedora alx-system_engineering-devops]$ pwd
/home/hullaah/Documents/ALX/alx-system_engineering-devops
[hullaah@fedora alx-system_engineering-devops]$ cd 0x00-shell_basics/
[hullaah@fedora 0x00-shell_basics]$ pwd
/home/hullaah/Documents/ALX/alx-system_engineering-devops/0x00-shell_basics
[hullaah@fedora 0x00-shell_basics]$ source ./10-back 
/home/hullaah/Documents/ALX/alx-system_engineering-devops
[hullaah@fedora alx-system_engineering-devops]$ pwd
/home/hullaah/Documents/ALX/alx-system_engineering-devops
[hullaah@fedora alx-system_engineering-devops]$