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?









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?









    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?









      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





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      asked 2 mins ago









      nathnath

      955625




      955625






















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