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root@linuxfix:~/command_not_found$
command not found
Bash command not found in PATH

Solutions

Prerequisites: Start by updating your system to resolve common issues and ensure the solutions provided below are compatible with your current environment.
check_latest_version && sudo apt update && sudo apt upgrade -y
Install missing package

Install required software:

sudo apt install package
sudo yum install package
which command
Check PATH

Verify PATH variable:

echo $PATH
export PATH=$PATH:/new/dir
hash -r
Use full path

Specify complete path:

/usr/bin/command
./script.sh
whereis command

What is command not found?

The shell cannot locate the specified command in any directory listed in the PATH variable.

Common scenarios: Typos in command names, missing packages, or incorrect PATH configuration.

Common Causes

  • Command misspelled
  • Package not installed
  • Not in PATH
  • Missing execute permissions

Debugging Tips

type command
find /usr -name command
dpkg -S command

Prevention

  • Use package managers
  • Maintain proper PATH
  • Check spelling
bash shell path installation