If youre a Linux user, youve most likely encountered the command not found error on the Linux terminal.
Unlike Windows, all commands, filenames, and directories on Linux and Unix systems are case-sensitive.
This means that all commands and their corresponding arguments or options should appear exactly as they are meant to.
Of course, most commands are lowercase.
Environment variables play an important role in Linux.
They contain valuable information about your login session and other important details.
If the command is not found, youll get an error that it’s not found.
With this understanding, heres how you could troubleshoot the command not found error on Linux.
Check for Syntax Errors
You should run all Linux commands exactly as they appear case-wise.
For example, the shell treats ls and LS as different commands on Linux.
Also, if your command contains arguments, double-check you’re using the correct case.
double-check you are using the correct command.
To trigger the command properly, you better specify the entire path to the program executable.
Unlike Windows, which uses backward slashes, Linux uses forward slashes.
Use theTabauto-completion feature of your terminal to avoid typos in directory names.
In this case, you will need to implement the program or the package that contains it.
Depending on your distro, use the default package manager to implement the required software.
On Debian-based distros,use the apt command, and use DNF or YUMon RHEL-based distros.
Similar to Windows, youll need elevated privileges to execute certain programs on Linux.
If that’s the case, confirm that youre using sudo or running the program as the root user.
