YouTube pausing script works from command line, but not from shortcut

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I wanted to pause YouTube and tried the last approach here using kill -SIGSTOP [pid]. Now the script works fine in the terminal but it doesn't work when invoked using a keyboard shortcut. The script:



#!/bin/sh
if [ -f /tmp/TimChromepid.RUN ]; then
 mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
 NMR=$(< /tmp/TimChromepid.PSD) 
 kill -SIGSTOP < /tmp/TimChromepid.PSD
else
 NMR=$(< /tmp/TimChromepid.PSD) 
 mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
 kill -SIGCONT $NMR
fi


I used the variable 'NMR' to store the PID, for when I feed it directly into kill I get this error:



kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]


As far as I can test it seems that it can run the script, and the if-statement, but it can't read the number from file nor can it execute kill.



How can I fix this and what's going on?




command-line bash scripts shortcut-keys google-chrome




share|improve this question






















  • Your kill -SIGSTOP < /tmp/TimChromepid.PSD suggests that kill reads a PID from stdin — which it doesn't, thus the usage message. Try kill -SIGSTOP $(cat /tmp/TimChromepid.PSD) instead.
    – PerlDuck
    May 15 at 9:59










  • @Mark Have you tried adding bash in front of the script name to provide a shell when registering the keyboard shortcut?
    – dsstorefile1
    May 15 at 11:31







  • 1




    @dsstorefile1 Yes, that did it, thank you! :)
    – Mark
    May 16 at 7:35










  • Did you fix the shebang? Please edit your question and change the code accordingly. To read the PID from the file you can do kill -SIGSPEC $(</tmp/TimChromepid.PSD) or use cat as shown by @PerlDuck. Please add some echo lines to test and redirect the whole output to a log file, especially that of kill with &>/path/to/logfile, then provide the content of the log file.
    – dessert
    May 16 at 7:59














up vote
0
down vote

favorite












I wanted to pause YouTube and tried the last approach here using kill -SIGSTOP [pid]. Now the script works fine in the terminal but it doesn't work when invoked using a keyboard shortcut. The script:



#!/bin/sh
if [ -f /tmp/TimChromepid.RUN ]; then
 mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
 NMR=$(< /tmp/TimChromepid.PSD) 
 kill -SIGSTOP < /tmp/TimChromepid.PSD
else
 NMR=$(< /tmp/TimChromepid.PSD) 
 mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
 kill -SIGCONT $NMR
fi


I used the variable 'NMR' to store the PID, for when I feed it directly into kill I get this error:



kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]


As far as I can test it seems that it can run the script, and the if-statement, but it can't read the number from file nor can it execute kill.



How can I fix this and what's going on?




command-line bash scripts shortcut-keys google-chrome




share|improve this question






















  • Your kill -SIGSTOP < /tmp/TimChromepid.PSD suggests that kill reads a PID from stdin — which it doesn't, thus the usage message. Try kill -SIGSTOP $(cat /tmp/TimChromepid.PSD) instead.
    – PerlDuck
    May 15 at 9:59










  • @Mark Have you tried adding bash in front of the script name to provide a shell when registering the keyboard shortcut?
    – dsstorefile1
    May 15 at 11:31







  • 1




    @dsstorefile1 Yes, that did it, thank you! :)
    – Mark
    May 16 at 7:35










  • Did you fix the shebang? Please edit your question and change the code accordingly. To read the PID from the file you can do kill -SIGSPEC $(</tmp/TimChromepid.PSD) or use cat as shown by @PerlDuck. Please add some echo lines to test and redirect the whole output to a log file, especially that of kill with &>/path/to/logfile, then provide the content of the log file.
    – dessert
    May 16 at 7:59












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I wanted to pause YouTube and tried the last approach here using kill -SIGSTOP [pid]. Now the script works fine in the terminal but it doesn't work when invoked using a keyboard shortcut. The script:



#!/bin/sh
if [ -f /tmp/TimChromepid.RUN ]; then
 mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
 NMR=$(< /tmp/TimChromepid.PSD) 
 kill -SIGSTOP < /tmp/TimChromepid.PSD
else
 NMR=$(< /tmp/TimChromepid.PSD) 
 mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
 kill -SIGCONT $NMR
fi


I used the variable 'NMR' to store the PID, for when I feed it directly into kill I get this error:



kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]


As far as I can test it seems that it can run the script, and the if-statement, but it can't read the number from file nor can it execute kill.



How can I fix this and what's going on?




command-line bash scripts shortcut-keys google-chrome




share|improve this question














I wanted to pause YouTube and tried the last approach here using kill -SIGSTOP [pid]. Now the script works fine in the terminal but it doesn't work when invoked using a keyboard shortcut. The script:



#!/bin/sh
if [ -f /tmp/TimChromepid.RUN ]; then
 mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
 NMR=$(< /tmp/TimChromepid.PSD) 
 kill -SIGSTOP < /tmp/TimChromepid.PSD
else
 NMR=$(< /tmp/TimChromepid.PSD) 
 mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
 kill -SIGCONT $NMR
fi


I used the variable 'NMR' to store the PID, for when I feed it directly into kill I get this error:



kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]


As far as I can test it seems that it can run the script, and the if-statement, but it can't read the number from file nor can it execute kill.



How can I fix this and what's going on?





command-line bash scripts shortcut-keys google-chrome





share|improve this question













share|improve this question




share|improve this question








edited May 21 at 9:22









Zanna

47.9k13118227




47.9k13118227










asked May 15 at 8:40









Mark

41




41











  • Your kill -SIGSTOP < /tmp/TimChromepid.PSD suggests that kill reads a PID from stdin — which it doesn't, thus the usage message. Try kill -SIGSTOP $(cat /tmp/TimChromepid.PSD) instead.
    – PerlDuck
    May 15 at 9:59










  • @Mark Have you tried adding bash in front of the script name to provide a shell when registering the keyboard shortcut?
    – dsstorefile1
    May 15 at 11:31







  • 1




    @dsstorefile1 Yes, that did it, thank you! :)
    – Mark
    May 16 at 7:35










  • Did you fix the shebang? Please edit your question and change the code accordingly. To read the PID from the file you can do kill -SIGSPEC $(</tmp/TimChromepid.PSD) or use cat as shown by @PerlDuck. Please add some echo lines to test and redirect the whole output to a log file, especially that of kill with &>/path/to/logfile, then provide the content of the log file.
    – dessert
    May 16 at 7:59
















  • Your kill -SIGSTOP < /tmp/TimChromepid.PSD suggests that kill reads a PID from stdin — which it doesn't, thus the usage message. Try kill -SIGSTOP $(cat /tmp/TimChromepid.PSD) instead.
    – PerlDuck
    May 15 at 9:59










  • @Mark Have you tried adding bash in front of the script name to provide a shell when registering the keyboard shortcut?
    – dsstorefile1
    May 15 at 11:31







  • 1




    @dsstorefile1 Yes, that did it, thank you! :)
    – Mark
    May 16 at 7:35










  • Did you fix the shebang? Please edit your question and change the code accordingly. To read the PID from the file you can do kill -SIGSPEC $(</tmp/TimChromepid.PSD) or use cat as shown by @PerlDuck. Please add some echo lines to test and redirect the whole output to a log file, especially that of kill with &>/path/to/logfile, then provide the content of the log file.
    – dessert
    May 16 at 7:59















Your kill -SIGSTOP < /tmp/TimChromepid.PSD suggests that kill reads a PID from stdin — which it doesn't, thus the usage message. Try kill -SIGSTOP $(cat /tmp/TimChromepid.PSD) instead.
– PerlDuck
May 15 at 9:59




Your kill -SIGSTOP < /tmp/TimChromepid.PSD suggests that kill reads a PID from stdin — which it doesn't, thus the usage message. Try kill -SIGSTOP $(cat /tmp/TimChromepid.PSD) instead.
– PerlDuck
May 15 at 9:59












@Mark Have you tried adding bash in front of the script name to provide a shell when registering the keyboard shortcut?
– dsstorefile1
May 15 at 11:31





@Mark Have you tried adding bash in front of the script name to provide a shell when registering the keyboard shortcut?
– dsstorefile1
May 15 at 11:31





1




1




@dsstorefile1 Yes, that did it, thank you! :)
– Mark
May 16 at 7:35




@dsstorefile1 Yes, that did it, thank you! :)
– Mark
May 16 at 7:35












Did you fix the shebang? Please edit your question and change the code accordingly. To read the PID from the file you can do kill -SIGSPEC $(</tmp/TimChromepid.PSD) or use cat as shown by @PerlDuck. Please add some echo lines to test and redirect the whole output to a log file, especially that of kill with &>/path/to/logfile, then provide the content of the log file.
– dessert
May 16 at 7:59




Did you fix the shebang? Please edit your question and change the code accordingly. To read the PID from the file you can do kill -SIGSPEC $(</tmp/TimChromepid.PSD) or use cat as shown by @PerlDuck. Please add some echo lines to test and redirect the whole output to a log file, especially that of kill with &>/path/to/logfile, then provide the content of the log file.
– dessert
May 16 at 7:59










1 Answer
1






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votes

















up vote
1
down vote













I don't think the problem has something to do with whether the script is run via keyboard shortcut or directly in a terminal. It's rather an error in your if branch and the script will alternately work and fail.



In the if branch you wrote



kill -SIGSTOP < /tmp/TimChromepid.PSD


which means: pipe the content of file /tmp/TimChromepid.PSD into kill's stdin. But kill doesn't read anything from stdin, it just accepts the PID as a command line parameter, which wasn't given. That's why it told you about its usage.



To fix it, simply do as you did in the else branch, i.e. either replace kill -SIGSTOP < /tmp/TimChromepid.PSD with kill -SIGSTOP $(< /tmp/TimChromepid.PSD) or use $NMR:



#!/bin/sh
if [ -f /tmp/TimChromepid.RUN ]; then
 mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
 NMR=$(< /tmp/TimChromepid.PSD) 
 kill -SIGSTOP $NMR
else
 NMR=$(< /tmp/TimChromepid.PSD) 
 mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
 kill -SIGCONT $NMR
fi





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    up vote
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    down vote













    I don't think the problem has something to do with whether the script is run via keyboard shortcut or directly in a terminal. It's rather an error in your if branch and the script will alternately work and fail.



    In the if branch you wrote



    kill -SIGSTOP < /tmp/TimChromepid.PSD


    which means: pipe the content of file /tmp/TimChromepid.PSD into kill's stdin. But kill doesn't read anything from stdin, it just accepts the PID as a command line parameter, which wasn't given. That's why it told you about its usage.



    To fix it, simply do as you did in the else branch, i.e. either replace kill -SIGSTOP < /tmp/TimChromepid.PSD with kill -SIGSTOP $(< /tmp/TimChromepid.PSD) or use $NMR:



    #!/bin/sh
    if [ -f /tmp/TimChromepid.RUN ]; then
     mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
     NMR=$(< /tmp/TimChromepid.PSD) 
     kill -SIGSTOP $NMR
    else
     NMR=$(< /tmp/TimChromepid.PSD) 
     mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
     kill -SIGCONT $NMR
    fi





    share|improve this answer
























      up vote
      1
      down vote













      I don't think the problem has something to do with whether the script is run via keyboard shortcut or directly in a terminal. It's rather an error in your if branch and the script will alternately work and fail.



      In the if branch you wrote



      kill -SIGSTOP < /tmp/TimChromepid.PSD


      which means: pipe the content of file /tmp/TimChromepid.PSD into kill's stdin. But kill doesn't read anything from stdin, it just accepts the PID as a command line parameter, which wasn't given. That's why it told you about its usage.



      To fix it, simply do as you did in the else branch, i.e. either replace kill -SIGSTOP < /tmp/TimChromepid.PSD with kill -SIGSTOP $(< /tmp/TimChromepid.PSD) or use $NMR:



      #!/bin/sh
      if [ -f /tmp/TimChromepid.RUN ]; then
       mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
       NMR=$(< /tmp/TimChromepid.PSD) 
       kill -SIGSTOP $NMR
      else
       NMR=$(< /tmp/TimChromepid.PSD) 
       mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
       kill -SIGCONT $NMR
      fi





      share|improve this answer






















        up vote
        1
        down vote










        up vote
        1
        down vote









        I don't think the problem has something to do with whether the script is run via keyboard shortcut or directly in a terminal. It's rather an error in your if branch and the script will alternately work and fail.



        In the if branch you wrote



        kill -SIGSTOP < /tmp/TimChromepid.PSD


        which means: pipe the content of file /tmp/TimChromepid.PSD into kill's stdin. But kill doesn't read anything from stdin, it just accepts the PID as a command line parameter, which wasn't given. That's why it told you about its usage.



        To fix it, simply do as you did in the else branch, i.e. either replace kill -SIGSTOP < /tmp/TimChromepid.PSD with kill -SIGSTOP $(< /tmp/TimChromepid.PSD) or use $NMR:



        #!/bin/sh
        if [ -f /tmp/TimChromepid.RUN ]; then
         mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
         NMR=$(< /tmp/TimChromepid.PSD) 
         kill -SIGSTOP $NMR
        else
         NMR=$(< /tmp/TimChromepid.PSD) 
         mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
         kill -SIGCONT $NMR
        fi





        share|improve this answer












        I don't think the problem has something to do with whether the script is run via keyboard shortcut or directly in a terminal. It's rather an error in your if branch and the script will alternately work and fail.



        In the if branch you wrote



        kill -SIGSTOP < /tmp/TimChromepid.PSD


        which means: pipe the content of file /tmp/TimChromepid.PSD into kill's stdin. But kill doesn't read anything from stdin, it just accepts the PID as a command line parameter, which wasn't given. That's why it told you about its usage.



        To fix it, simply do as you did in the else branch, i.e. either replace kill -SIGSTOP < /tmp/TimChromepid.PSD with kill -SIGSTOP $(< /tmp/TimChromepid.PSD) or use $NMR:



        #!/bin/sh
        if [ -f /tmp/TimChromepid.RUN ]; then
         mv /tmp/TimChromepid.RUN /tmp/TimChromepid.PSD
         NMR=$(< /tmp/TimChromepid.PSD) 
         kill -SIGSTOP $NMR
        else
         NMR=$(< /tmp/TimChromepid.PSD) 
         mv /tmp/TimChromepid.PSD /tmp/TimChromepid.RUN
         kill -SIGCONT $NMR
        fi






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered May 21 at 12:15









        PerlDuck

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