Script Integer getting prefixed with "

Question

I am running a jar file using a very basic shell script (I literally just need this to run on startup of a NAS). However, I am getting some rather unexpected behavior:

Script looks like this:

java -jar myJar.war --inputParam=10101 

myJar starts up - then throws a NumberFormatException saying that "10101 is not a valid number format. The question is: where is that " coming from? Anything I can try to avoid this behavior?

The exact same command works if I run it manually without a script since there's no " appearing.

Thank you kindly!

EDIT: hexdump of the original file:

0000000 / u s r / l o c a l / j r e / b 0000010 i n / j a v a - j a r / s h 0000020 a r e / m a t h u - g o / j e n 0000030 k i n s . w a r - - h t t p P 0000040 o r t = 1 0 1 0 1 \r \n 

Thanks for all the suggestions.

Answer 1

The issue is the carriage return at the end of the line in the script file (visible as \r in the output of hexdump -C). This is a DOS line-ending, but on Unix, the carriage return would be part of the argument to java.

The error message would have said "10101" (Java would quote the string that it had difficulties interpreting in the message), but since the carriage return returns the cursor to the start of the line while printing it, the last " would have been printed at the beginning of the line, which made the error message look a bit weird.

Retyping the script in a Unix text editor, or running dos2unix over the original file, would solve this.

Also note that a script should have a #!-line at the top. For example, inserting #!/bin/sh as the script's first line would make the the script run with /bin/sh as its interpreter.