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- Question: bash java command not found
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bash java command not found
If you are trying to run a Java program from the Bash terminal and you receive the error “java: command not found,” it may be because Java is not installed on your system or it is not in your system’s PATH.
Here are some steps you can take to resolve the issue:
-
Verify that Java is installed on your system by running the command “java -version” in the terminal. If Java is not installed, you will need to download and install it from the official website.
-
If Java is installed, but you still receive the error, try adding the directory where the Java executable is located to your system’s PATH. You can do this by adding the following line to your .bashrc or .bash_profile file:
export PATH=$PATH:/path/to/java/bin
Replace “/path/to/java/bin” with the actual path to the Java executable directory.
-
After making changes to your .bashrc or .bash_profile file, you will need to source the file for the changes to take effect. You can do this by running the command “source ~/.bashrc” or “source ~/.bash_profile” in the terminal.
-
Finally, try running the “java” command again in the terminal to see if the issue has been resolved.
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javac \”command not found\” error
Why is Java command not found?
The “Java command not found” error occurs when the system is unable to locate the Java executable in the command line. There are a few possible reasons for this error, including:
-
Java is not installed on your system: If you do not have Java installed on your system, then the Java command will not be available. You can check if Java is installed on your system by running the command “java -version” in the command line. If Java is not installed, you will need to download and install it from the official website.
-
Java is not in the system PATH: Even if Java is installed on your system, the Java executable might not be in the system PATH, which is a list of directories that the system searches when trying to find an executable. To fix this issue, you can add the directory containing the Java executable to the system PATH.
-
Typing error: Another possible reason for the error message is a typing error. Make sure that you are typing the correct command and that there are no typos in the command.
-
Permissions issue: It’s possible that the user executing the command does not have sufficient permissions to execute the Java command. In this case, you may need to run the command as an administrator or grant appropriate permissions to the user.
By addressing the above possible causes, you should be able to resolve the “Java command not found” error.
Why is bash command not found?
If you receive an error message saying “bash: command not found” when running a command in your terminal or command prompt, it typically means that the command you are trying to run is not installed on your system or the command’s location is not in your system’s PATH
.
Here are a few possible reasons why you might be getting the error message:
-
The command is not installed: The command you are trying to run may not be installed on your system. You can check if a command is installed by using the
which
command or thewhere
command (on Windows). For example, to check if thegit
command is installed, you can runwhich git
orwhere git
. If the command is not installed, you will need to install it. -
The command is not in your PATH: Your system’s
PATH
is a list of directories where your system searches for executable files. If the directory containing the command you are trying to run is not in yourPATH
, your system won’t be able to find it. You can check yourPATH
by runningecho $PATH
. If the directory containing the command is not in yourPATH
, you can add it by editing your shell profile file (e.g.~/.bashrc
or~/.bash_profile
on Unix/Linux systems) and adding the directory to thePATH
variable. -
The command is not spelled correctly: Make sure you are typing the command correctly. The command name is case-sensitive, so
git
is not the same asGIT
. Also, make sure you are not misspelling the command. -
The command is not compatible with your operating system: Some commands are only available on specific operating systems or may require certain dependencies that are not installed on your system.
If you’re still having trouble after checking these possible reasons, you may want to seek further assistance or do additional research.
How to set JAVA_HOME in Linux?
To set the JAVA_HOME environment variable in Linux, follow these steps:
-
Determine the path to the Java installation directory. For example, if you installed Java in
/usr/lib/jvm/java-11-openjdk-amd64/
, then this is the path to your Java installation directory. -
Open a terminal and type the following command:
bashsudo nano /etc/environment
This will open the /etc/environment
file in the nano text editor with superuser privileges.
- Add the following line at the end of the file:
makefileJAVA_HOME="/usr/lib/jvm/java-11-openjdk-amd64/"
Replace the path with the path to your Java installation directory.
-
Save the file by pressing
Ctrl+O
and then exit nano by pressingCtrl+X
. -
Load the environment variables into your current session by typing the following command in the terminal:
bashsource /etc/environment
- To check if JAVA_HOME has been set correctly, type the following command:
bashecho $JAVA_HOME
This should display the path to your Java installation directory.
Note: Setting JAVA_HOME in the /etc/environment file will make it available system-wide. If you only want to set JAVA_HOME for your user, you can add the same line to your ~/.bashrc file instead.
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Java command not found centos 7
If you are trying to run a Java command on CentOS 7 and you receive an error message saying “Java command not found”, it’s likely that Java is not installed on your system or the Java executable is not in your system’s PATH.
To check if Java is installed on your system, you can run the following command in the terminal:
java -version
If Java is not installed, you can install it by following these steps:
-
Update the package index on your system:
sqlsudo yum update
-
Install the Java Development Kit (JDK) using the following command:
sudo yum install java-devel
-
Verify that Java is installed correctly by running the following command:
java -version
If Java is installed but you still receive the “Java command not found” error, you may need to add the Java executable to your system’s PATH. To do this, you can edit the /etc/profile
file and add the following lines at the end:
bashexport JAVA_HOME=/usr/java/latest export PATH=$PATH:$JAVA_HOME/bin
Save the file and then run the following command to apply the changes:
bashsource /etc/profile
After this, you should be able to run Java commands without any issues.
Sudo java command not found
If you are getting the error message “sudo: java: command not found” when trying to run a Java command with sudo, it is likely that the Java executable is not included in the system’s PATH environment variable or that Java is not installed on the system.
To check if Java is installed on your system, you can run the following command:
java -version
If Java is not installed, you will need to install it before you can run Java commands with sudo. To install Java on Ubuntu, for example, you can use the following command:
csharpsudo apt-get install default-jdk
If Java is installed but the system is unable to find the executable, you may need to add the path to the Java executable to the system’s PATH environment variable. You can do this by adding the following line to your .bashrc file:
rubyexport PATH=$PATH:/path/to/java/bin
Replace “/path/to/java/bin” with the actual path to the directory containing the Java executable. Once you have added this line, you can reload your .bashrc file by running the following command:
bashsource ~/.bashrc
This should allow you to run Java commands with sudo without encountering the “sudo: java: command not found” error.
You can see some more information related to bash java command not found here
- Java command not found on Linux – Stack Overflow
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- How to Fix the “java command not found” in Linux?
- ‘Java Not Recognized’ Error Fix – TheServerSide
- How to fix a “Command not found” error in Linux | Enable Sysadmin
- Setting Java variables on Linux – IBM
- How to Check if Java is Installed – Baeldung
- What Is The Solution Of Java Error: Command Not Found?
- How to fix “java command not found” – LinuxPip
- ‘Java Not Recognized’ Error Fix – TheServerSide
- “/bin/bash: java: command not found” problem:spark run on yarn
- [Solved] Java Command Not Found on Linux?
- Command ‘java’ not found on WSL, even though … – Ask Ubuntu
- bash: Greeter.java: command not found? (Example) – Treehouse
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