Syntax error near unexpected token `('


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# 1  
Syntax error near unexpected token `('

Code:
detect_mouse_mvt.sh
/home/andy/bin/detect_mouse_mvt.sh: line 4: syntax error near unexpected token `('
/home/andy/bin/detect_mouse_mvt.sh: line 4: `fh = file('/dev/input/mice')'

Code:
#!/bin/bash
# 
# 
fh = file('/dev/input/mice')
while True:                 
    fh.read(3)
    print 'Mouse moved!'

I found this, but it only moves the mouse. Looking for something that detects mouse movement so I can perform some command.

Code:
xdotool mousemove_relative --sync 5 0


Last edited by drew77; 03-22-2019 at 02:51 AM..
# 2  
Code:
syntax error near unexpected token `('

Code:
`fh = file('/dev/input/mice')'

Should be `(`
Could that be part of the issue?
# 3  
I am confused. Smilie

What do the red single quotes mean?

I do not know what to change in the fh statement.

Thanks.
# 4  
To me this was the old sh syntax for executing what is contained in those single "left" quote, replaced by in early ksh (and later sh ) by $(to execute...) syntax, my 2 cents would be : because of the possible confusion between those single quotes making it a nightmare to debug when many the new syntax is clear and univoque...
# 5  
Sure we're talking about a bash script in post #1, despite the bash shebang? In a bash script, a variable assignment can't have spaces around the = sign, so
Code:
fh = file('/dev/input/mice')

won't do that. What is the purpose of the parentheses following the *nix file command?
Code:
file '/dev/input/mice'
 /dev/input/mice: character special (13/63)

would yield a correct result, and can be assigned to a variable the way described above, called "command substitution".


The rest of the script isn't bash shell code either...

Last edited by RudiC; 03-22-2019 at 05:45 AM..
# 6  
In my defense, I did not write the code.

python - How to detect mouse and keyboard inactivity in linux - Stack Overflow

I think it is part of a python script and not bash.

So, is there no fix?

I will continue researching if xdotool may be able to detect mouse movement.
# 7  
JUST mouse movement, nothing else? How far would

Code:
read -n1 TMP </dev/input/mice

get you, given "mice" IS the mouse in question?


Please note that in your post #1 script having a bash "shebang" and python commands (without specifying or calling) the repsective interpreter is doomed to fail.
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