Bash Script to run commands from the history












0















I wrote a tiny bash_script to be able to run commands from history with entering the number of the history line:



Search term with grep in the history, display and print to file with tee:



history | grep -i "search-term" | tee "$HOME/.hg.temp"


Then select the appropriate line by its number with grep, reduce it to the command with awk and run the command. 



run=$(grep "line-number" "$HOME/.hg.temp" | awk -F'  ' '{print $2}'); $run


this works fine, but if I put it all into a bash-script it won't work anymore:



#!/bin/bash



if [ "$1" = "-e" ] || [ "$1" = "--enter" ]; then



    run=$(grep "$2" "$HOME/.hg.temp" | awk -F'  ' '{print $2}')

    $run

    exit



fi



history | grep -i "$1" | tee "$HOME/.hg.temp"


for some reason grep does not find any match and the $HOME/.hg.temp file is always empty. What am I missing out here?






bash shell-script command-line






share



























    0















    I wrote a tiny bash_script to be able to run commands from history with entering the number of the history line:



    Search term with grep in the history, display and print to file with tee:



    history | grep -i "search-term" | tee "$HOME/.hg.temp"


    Then select the appropriate line by its number with grep, reduce it to the command with awk and run the command. 



    run=$(grep "line-number" "$HOME/.hg.temp" | awk -F'  ' '{print $2}'); $run


    this works fine, but if I put it all into a bash-script it won't work anymore:



    #!/bin/bash
    

    
if [ "$1" = "-e" ] || [ "$1" = "--enter" ]; then
    

    
    run=$(grep "$2" "$HOME/.hg.temp" | awk -F'  ' '{print $2}')
    
    $run
    
    exit
    

    
fi
    

    
history | grep -i "$1" | tee "$HOME/.hg.temp"


    for some reason grep does not find any match and the $HOME/.hg.temp file is always empty. What am I missing out here?






    bash shell-script command-line






    share

























      0












      0








      0








      I wrote a tiny bash_script to be able to run commands from history with entering the number of the history line:



      Search term with grep in the history, display and print to file with tee:



      history | grep -i "search-term" | tee "$HOME/.hg.temp"


      Then select the appropriate line by its number with grep, reduce it to the command with awk and run the command. 



      run=$(grep "line-number" "$HOME/.hg.temp" | awk -F'  ' '{print $2}'); $run


      this works fine, but if I put it all into a bash-script it won't work anymore:



      #!/bin/bash
      

      
if [ "$1" = "-e" ] || [ "$1" = "--enter" ]; then
      

      
    run=$(grep "$2" "$HOME/.hg.temp" | awk -F'  ' '{print $2}')
      
    $run
      
    exit
      

      
fi
      

      
history | grep -i "$1" | tee "$HOME/.hg.temp"


      for some reason grep does not find any match and the $HOME/.hg.temp file is always empty. What am I missing out here?






      bash shell-script command-line






      share














      I wrote a tiny bash_script to be able to run commands from history with entering the number of the history line:



      Search term with grep in the history, display and print to file with tee:



      history | grep -i "search-term" | tee "$HOME/.hg.temp"


      Then select the appropriate line by its number with grep, reduce it to the command with awk and run the command. 



      run=$(grep "line-number" "$HOME/.hg.temp" | awk -F'  ' '{print $2}'); $run


      this works fine, but if I put it all into a bash-script it won't work anymore:



      #!/bin/bash
      

      
if [ "$1" = "-e" ] || [ "$1" = "--enter" ]; then
      

      
    run=$(grep "$2" "$HOME/.hg.temp" | awk -F'  ' '{print $2}')
      
    $run
      
    exit
      

      
fi
      

      
history | grep -i "$1" | tee "$HOME/.hg.temp"


      for some reason grep does not find any match and the $HOME/.hg.temp file is always empty. What am I missing out here?






      bash shell-script command-line




      bash shell-script command-line





      share












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      asked 2 mins ago









      nathnath

      955625




      955625






















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