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Page last modified 13:27, 16 Sep 2015 by alang

SHELL開發時常用函數

    版本為 22:35, 20 Nov 2024

    到這個版本。

    返回到 版本存檔.

    查閱目前版本

    一些很實用的函數範例

    Check_Myself

    用途：檢查自身程序是否已經執行中，如果有，程序立即跳離，可避免同一個 script 重複被執行。

    pid=$$
workdir=$( cd $( dirname "$0" ) && pwd )
script_name=`basename $0`
script_pid="$workdir/${script_name}.pid"

Check_Myself(){
  if [ ! -e $script_pid ];then
      RUNCOUNT=0
  else
      RMANPID=`cat $script_pid`
      RUNCOUNT=`ps -fp $RMANPID | grep $script_name | wc -l`
  fi

  if [ $RUNCOUNT -eq 0 ];then
      echo $pid > $script_pid
  else
      echo "Abort: The process is already running..."
      exit 1
  fi
}

cd $workdir
Check_Myself

     

    getopts 指令參數

    reference to undefined name 'syntax' Exception of type 'MindTouch.Deki.Script.Runtime.DekiScriptUndefinedNameException' was thrown. (click for details)

    Pause 暫停

    用法: pause

    可用於程式開發及偵錯

    reference to undefined name 'syntax' Exception of type 'MindTouch.Deki.Script.Runtime.DekiScriptUndefinedNameException' was thrown. (click for details)

    Error 錯誤訊息

    用途：輸出錯誤訊息

    reference to undefined name 'syntax' Exception of type 'MindTouch.Deki.Script.Runtime.DekiScriptUndefinedNameException' was thrown. (click for details)

    詢問 Yes/No

    用法: getyn "Would you like to install WANPIPE now? [y]"

    $NONINTERACTIVE  如果程式執行時，不想讓 user 做任何的輸入時，可以為 1
    NONINTERACTIVE=1 ，或者 = 空白，以顯示相關的提示訊息

    reference to undefined name 'syntax' Exception of type 'MindTouch.Deki.Script.Runtime.DekiScriptUndefinedNameException' was thrown. (click for details)
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