Misc. Commands' Cheatsheet
Explore essential Bash commands used for file manipulation, system monitoring, text editing, and process control. Understand command syntax and usage through examples, helping you efficiently navigate and manage Linux systems.
We'll cover the following...
We'll cover the following...
| Command | Definition | Syntax | Example |
|---|---|---|---|
| bc | bc is an arbitrary-precision language for performing math calculations. |
bc [ -hlwsqv ] [long-options] [file] |
To assign the variable var a value of 5 and display in on the console: echo "var=5;var" | bc |
| chdir (change directory) | chdir is the system command for changing the current working directory. |
chdir direectory_name |
To change directory to “/home/etc/ww”: chdir /home/etc/ww |
| df (disk free) | It reports the amount of space used and available on currently mounted filesystems. | df [option(s)] [device(s)] |
To get information only for the root directory: df / |
| du (disk usage) | It shows the sizes of directories and files. | du [options] [directories and/or files] |
This will show the sizes of all directories that are in dir2 that resides in dir1: du dir1/dir2 |
| file | This command classifies filesystem objects. | file [option(s)] object_name(s) |
Information about a file named “file1.txt” can be obtained by: file file1.txt |
| free | It provides information about unused and used memory and swap space. | free [options] |
To show all of the data in megabytes: free -m |
| gzip | It is |