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0

I am using the following short BASH script running on a Raspberry PI 3B to monitor port 11005 for 1 and 0 strings on a PC within my network - it toggles a GPIO output to key an amateur radio morse code transmitter. After displaying "Start listening on Port 11005, I get the error message

morse2.sh 36:  morse2.sh:  Syntax error:  "(" unexpected.

I have tried a bunch of fixes - none work. Also, why does this script need nmap to run? I have nmap installed on the Raspberry pi - seems to run well.

#!/bin/bash



#be sure you have already installed nmap on your PI





PORT=11005

CW_PIN=25

echo "Start listening on port $PORT ..."

while read line

do



    #echo $line

    #echo $line | od -An -t uC



    cmd=${line:0:1}



    #echo $cmd

    #echo $cmd | od -An -t uC



case "$cmd" in



    0) #echo "000"

       gpio write $CW_PIN 0

       ;;



    1) #echo "111"

       gpio write $CW_PIN 1

       ;;



    3) echo "Going to stop listener ..."

       break

       ;;



    *) #echo "unknown cmd"

       ;;



esac



done < <((echo "Welcome. Please give me one of the following commands: 0 | 1 | 3") | ncat -k -l $PORT)

echo "... listener stopped."

exit 0

bash shell-script

share|improve this question

edited 1 hour ago

αғsнιη

17.8k103271

asked 2 hours ago

SteveWSteveW

11

New contributor

SteveW is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Where do I begin? (1) Does it actually say “morse2.sh” twice in the error message?  (2) Have you posted the complete script (i.e., the one that got that error message)?  (3) When you edit the script, which one is line 36?  (4) “Also, why does this script need nmap to run?”  Because it uses nmap.  Or is your question something more subtle than that?
  
  – Scott
  2 hours ago
  
  
  

  
  
  
  

add a comment | 

0

I am using the following short BASH script running on a Raspberry PI 3B to monitor port 11005 for 1 and 0 strings on a PC within my network - it toggles a GPIO output to key an amateur radio morse code transmitter. After displaying "Start listening on Port 11005, I get the error message

morse2.sh 36:  morse2.sh:  Syntax error:  "(" unexpected.

I have tried a bunch of fixes - none work. Also, why does this script need nmap to run? I have nmap installed on the Raspberry pi - seems to run well.

#!/bin/bash



#be sure you have already installed nmap on your PI





PORT=11005

CW_PIN=25

echo "Start listening on port $PORT ..."

while read line

do



    #echo $line

    #echo $line | od -An -t uC



    cmd=${line:0:1}



    #echo $cmd

    #echo $cmd | od -An -t uC



case "$cmd" in



    0) #echo "000"

       gpio write $CW_PIN 0

       ;;



    1) #echo "111"

       gpio write $CW_PIN 1

       ;;



    3) echo "Going to stop listener ..."

       break

       ;;



    *) #echo "unknown cmd"

       ;;



esac



done < <((echo "Welcome. Please give me one of the following commands: 0 | 1 | 3") | ncat -k -l $PORT)

echo "... listener stopped."

exit 0

bash shell-script

share|improve this question

edited 1 hour ago

αғsнιη

17.8k103271

asked 2 hours ago

SteveWSteveW

11

New contributor

SteveW is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Where do I begin? (1) Does it actually say “morse2.sh” twice in the error message?  (2) Have you posted the complete script (i.e., the one that got that error message)?  (3) When you edit the script, which one is line 36?  (4) “Also, why does this script need nmap to run?”  Because it uses nmap.  Or is your question something more subtle than that?
  
  – Scott
  2 hours ago
  
  
  

  
  
  
  

add a comment | 

I am using the following short BASH script running on a Raspberry PI 3B to monitor port 11005 for 1 and 0 strings on a PC within my network - it toggles a GPIO output to key an amateur radio morse code transmitter. After displaying "Start listening on Port 11005, I get the error message

morse2.sh 36:  morse2.sh:  Syntax error:  "(" unexpected.

I have tried a bunch of fixes - none work. Also, why does this script need nmap to run? I have nmap installed on the Raspberry pi - seems to run well.

#!/bin/bash



#be sure you have already installed nmap on your PI





PORT=11005

CW_PIN=25

echo "Start listening on port $PORT ..."

while read line

do



    #echo $line

    #echo $line | od -An -t uC



    cmd=${line:0:1}



    #echo $cmd

    #echo $cmd | od -An -t uC



case "$cmd" in



    0) #echo "000"

       gpio write $CW_PIN 0

       ;;



    1) #echo "111"

       gpio write $CW_PIN 1

       ;;



    3) echo "Going to stop listener ..."

       break

       ;;



    *) #echo "unknown cmd"

       ;;



esac



done < <((echo "Welcome. Please give me one of the following commands: 0 | 1 | 3") | ncat -k -l $PORT)

echo "... listener stopped."

exit 0

bash shell-script

share|improve this question

edited 1 hour ago

αғsнιη

17.8k103271

asked 2 hours ago

SteveWSteveW

11

New contributor

SteveW is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

morse2.sh 36:  morse2.sh:  Syntax error:  "(" unexpected.

#!/bin/bash



#be sure you have already installed nmap on your PI





PORT=11005

CW_PIN=25

echo "Start listening on port $PORT ..."

while read line

do



    #echo $line

    #echo $line | od -An -t uC



    cmd=${line:0:1}



    #echo $cmd

    #echo $cmd | od -An -t uC



case "$cmd" in



    0) #echo "000"

       gpio write $CW_PIN 0

       ;;



    1) #echo "111"

       gpio write $CW_PIN 1

       ;;



    3) echo "Going to stop listener ..."

       break

       ;;



    *) #echo "unknown cmd"

       ;;



esac



done < <((echo "Welcome. Please give me one of the following commands: 0 | 1 | 3") | ncat -k -l $PORT)

echo "... listener stopped."

exit 0

share|improve this question

edited 1 hour ago

αғsнιη

17.8k103271

asked 2 hours ago

SteveWSteveW

11

New contributor

SteveW is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 1 hour ago

αғsнιη

17.8k103271

asked 2 hours ago

SteveWSteveW

11

New contributor

SteveW is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 1 hour ago

αғsнιη

17.8k103271

edited 1 hour ago

αғsнιη

17.8k103271

asked 2 hours ago

SteveWSteveW

11

New contributor

SteveW is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 2 hours ago

SteveWSteveW

11