linux shell 小例子

#!/bin/bash

PrintHelp()
{
    echo  FORMAT: command arg
    echo  NOTE: the arg must be  number
    echo  such as : command 100000
    return    
}

if [ $# -lt 1 ]; then
    PrintHelp
    exit -1
fi

if [[ $1 == *[!0-9]* ]]; then
    echo " the arg must be number"
    exit -1
fi    

echo `date +%Y%m%d%H%M%S` - INFO - 101 - 0 - 25002 - 600061470 - 98765432101
echo `date +%Y%m%d%H%M%S` - INFO - 101 - 0 - 25002 - 600061471 - 98765432102
a=600000000
b=13810100000
c=0
for (( i=2; i<$1; i++ ))
do
  c=`expr $i % 10000`
  if [ $c == 1 ]
     then
         echo `date +%Y%m%d%H%M%S` - INFO - 101 - 0 - 25002 - 601071468 - 98765432103
         echo `date +%Y%m%d%H%M%S` - INFO - 101 - 0 - 25002 - 601071469 - 98765432104
  fi
         let x=$a+$i
         let y=$b+$i
         echo `date +%Y%m%d%H%M%S` - INFO - 101 - 0 - 46000 - $x - $y
     sleep 0.08
done