Simple bash scripts for Ubuntu system overview. Last edited March, 2025.
To run either of the scripts, go to the corresponding folder and run chmod +x ./main.sh. After that, you can successfully run the ./main.sh script. The scripts were written and tested on Ubuntu 22.04, so their behaviour may differ on other Unix distributors.
IMPORTANT: directory overview requires admin (sudo) priviliges; if you'd like to run the script without them, simply remove any mention of sudo from the commands.
The script can be found in the src/sys_overview folder and is run without arguments. It outputs the following information:
HOSTNAME = host name
TIMEZONE = time zone as: America/New_York UTC -5
USER = current user who ran the script
OS = type and version of operating system
DATE = current time as: 12 May 2020 12:24:36
UPTIME = system uptime
UPTIME_SEC = system uptime in seconds
IP = ip address of the loopback interface
MASK = network mask of the loopback interface as: xxx.xxx.xxx.xxx.
GATEWAY = default gateway ip
RAM_TOTAL = main memory size in GB with an accuracy of three decimal places as: 3.125 GB
RAM_USED = used memory size in GB with an accuracy of three decimal places
RAM_FREE = free memory size in GB, with an accuracy of three decimal places
SPACE_ROOT = root partition size in MB, with an accuracy of two decimal places, as 254.25 MB
SPACE_ROOT_USED = size of used space of the root partition in MB, with an accuracy of two decimal places
SPACE_ROOT_FREE = size of free space of the root partition in MB, with an accuracy of two decimal places
The script uses the following colour designations: 1 - white, 2 - red, 3 - green, 4 - blue, 5 - purple, 6 - black. These values are assigned in the colors.conf file as follows:
column1_background is the background of the value names (HOSTNAME, TIMEZONE, USER etc.)
column1_font_color is the font colour of the value names (HOSTNAME, TIMEZONE, USER etc.)
column2_background is the background of the values (after the '=' sign)
column2_font_color is the font colour of the values (after the '=' sign)
When configuring the file, make sure the font and background colours of one column don't match. If one or more parameters are not set, the colour will be substituted from the default colour scheme.
After the system information output, the colour scheme is shown as follows:
Column 1 background = 2 (red)
Column 1 font color = 4 (blue)
Column 2 background = 5 (purple)
Column 2 font color = 1 (white)
When running the script with the default colour scheme, the output will look like this:
Column 1 background = default (black)
Column 1 font color = default (white)
Column 2 background = default (red)
Column 2 font color = default (blue)
The script can be found in the src/dir_overview folder and is run with a single parameter, which is an absolute or relative path to a directory. The parameter must end with '/', for example: ./main.sh /var/log/
The script outputs the following information about the directory specified in the parameter:
- Total number of folders, including subfolders
- Top 5 folders with largest size in descending order (path and size)
- Total number of files
- Number of configuration files (with .conf extension), text files, executable files, log files (files with .log extension), archives, symbolic links
- Top 10 files with largest size in descending order (path, size and type)
- Top 10 executable files with largest size in descending order (path, size and hash)
- Execution time of the script in seconds
Output example:
Total number of folders (including all nested ones) = 6
TOP 5 folders of maximum size arranged in descending order (path and size):
1 - /var/log/one/, 100 GB
2 - /var/log/two/, 100 MB
etc up to 5
Total number of files = 30
Number of:
Configuration files (with the .conf extension) = 1
Text files = 10
Executable files = 5
Log files (with the extension .log) = 2
Archive files = 3
Symbolic links = 4
TOP 10 files of maximum size arranged in descending order (path, size and type):
1 - /var/log/one/one.exe, 10 GB, exe
2 - /var/log/two/two.log, 10 MB, log
etc up to 10
TOP 10 executable files of the maximum size arranged in descending order (path, size and MD5 hash of file):
1 - /var/log/one/one.exe, 10 GB, 3abb17b66815bc7946cefe727737d295
2 - /var/log/two/two.exe, 9 MB, 53c8fdfcbb60cf8e1a1ee90601cc8fe2
etc up to 10
Script execution time (in seconds) = 1.5