Bc: Command Not Found

• Command Not Found Mac

Having just installed Java on the Pi, which in itself was virtually impossible, I have written some Java. Which will not compile. Having written the file, named hello.java, I type:

javac hello.java

into the LXTerminal. The folder which the file is in is /home/pi/Java and is set on the command line. At compilation I get this error:

bash: javac: command not found

I found a pretty simple answer today that worked for rsync. Install git bash for Windows; Download rsync from futureware.at. Extract to anywhere, I choose C: rsync-3.1.2-2-x8664.pkg; Add the bin folder to the top of your system path. I do not know who is behind futureware.at, I would prefer to link to a more primary source. Do you happen to know where to look for that specific message “command not found” in centos? I’d like to chnage it to something else but am not able to locate it anywhere have found it in other distros like ubuntu/debian – they have it in /etc/bash.bashrc and they even have such package by name command-not-found and I was able to replace it with desired content so, is there a. I t could be caused by the path statement not containing Windows System32. Right-click Computer Properties Advanced system settings in the left pane Environment Variables at the bottom. In the System variables box, scroll down to Path and double-click it.

can anyone help?

HeatfanJohnimulsionimulsion

Command Not Found Mac

4 Answers

This is a $PATH issue. $PATH is an environment variable that contains a list of directories to search when looking for an executable. You can see your current $PATH via echo $PATH.

javac: command not found indicates javac is not in any of the directories in your $PATH. You need to add the directory with javac in it into your $PATH, or add javac to one of the directories in your $PATH -- but the former is much preferable.

To temporarily add a directory for your current shell:

If you want to use that permanently, add the same line to ~/.bashrc. For example, I use JDK 8 on the pi that I have installed to /usr/local, so I have a line:

That directory contains java, javac, jar, etc.

You mentioned that java appears in be in your path since 'java -version comes up with the java number and package so java is definitely installed' although you do not actually say what that number and package are. I suspect you have multiple versions installed, one of which is just a jre and thus does not include javac.

goldilocks♦goldilocks

It's likely you just installed the JRE and not the full JDK. If you're running Raspbian Wheezy, you can use

apt-get install openjdk-7-jdk

to install javac. (If you're using the older Debian Wheezy OS, it works with the Sun JVM, so you can install that with the instructions here: http://www.savagehomeautomation.com/pi-jdk . The standard Raspbian OS isn't supported by Sun yet, so you have to use Openjdk with it.)

Do you get anything with when typing 'java -version' in command line ? If not, it is not fully configured. Also, did you set the JAVA_HOME in your class path ?

Check the above link out for that, if you have not done so already.

javac: Command not found - after installing Java

If you receive this error, UNIX cannot find the compiler, javac.orjavac: Command not found - after installing Java

Here's one way to tell UNIX where to find javac. Suppose you installed the JDK in /usr/local/jdk1.8.0. At the prompt you would type the following command and press Return:

/usr/local/jdk1.8.0/javac hello.javaNote: If you choose this option, each time you compile or run a program, you'll have to precede your javac and java commands with /usr/local/jdk1.8.0/. To avoid this extra typing, you could add this information to your PATH variable. The steps for doing so will vary depending on which shell you are currently running.

Class names, 'hello', are only accepted if annotation processing is explicitly requested

If you receive this error, you forgot to include the .java suffix when compiling the program. Remember, the command is javac hello.java not javac hello.

For more details, consult this lecture 'Creating a Hello World application' in this page. http://learnjavaeasy.com/course/learn-java-online-with-java-8-by-examples/

Not the answer you're looking for? Browse other questions tagged javasoftware-compilation or ask your own question.

Problem: ddclient 3.73 no longer starts

Symptom: here are the errors messages

root@host:~# /etc/rc.d/rc.ddclient start
Starting ddclient: /usr/sbin/ddclient: line 14: require: command not found
/usr/sbin/ddclient: line 15: use: command not found
/usr/sbin/ddclient: line 16: use: command not found
/usr/sbin/ddclient: line 17: use: command not found
/usr/sbin/ddclient: line 18: use: command not found
/usr/sbin/ddclient: line 20: my: command not found
/usr/sbin/ddclient: line 21: my: command not found
/usr/sbin/ddclient: line 22: =~: command not found
/usr/sbin/ddclient: line 23: my: command not found
/usr/sbin/ddclient: line 24: =~: command not found
/usr/sbin/ddclient: line 25: my: command not found
/usr/sbin/ddclient: line 26: syntax error near unexpected token `('
/usr/sbin/ddclient: line 26: `my $hostname = hostname();'

Background:
I'm running ddclient on Slackware 12. I have been using it for a few years without issue. I believe the problems may have started a month or so ago when I upgraded from Slack 11 to Slack 12, but that only a guess. It appears that /usr/sbin/ddclient is having trouble finding perl, again a guess. Slack 12 uses perl 5.8.8 which I use for other functions without apparent issue.

I've search the help forum here and Google but no joy. Any ideas on how to bring ddclient back to life?

TIA