How to run Ubuntu commands from java

Question

currently I am trying to give terminal commands, the code is below:

p = Runtime.getRuntime().exec(new String[]{"/bin/sh","-c","hadoop fs -cat /user/hive/warehouse/new_cur2/* > /home/leo/new_cur2.csv"});

It is giving me the error exit: 127 Can anyone fix it please?

Many thanks

You could try splitting the command into separate strings, afaik that is a requirement any ways. — Jorn Vernee
– Jorn Vernee, Commented May 30, 2017 at 21:36

John Muiruri · Accepted Answer · 2017-05-30 21:25:10Z

0

From this 127 Return code from $? the error code means the command is not found in your path. Make sure your PATH is correctly setup.

answered May 30, 2017 at 21:25

John Muiruri

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2 Comments

Christian Leo Over a year ago

Thanks, you are right, but the path is correct, if I put the command part hadoop fs -cat /user/hive/warehouse/new_cur2/* > /home/leo/new_cur2.csv in terminal, it will work

Christian Leo Over a year ago

Because when I was trying to run the command in Java, if I want to create a shell, it is necessary to use "/bin/bash","-c". stackoverflow.com/questions/4916918/…

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