crontab实现每秒执行

crontab：

#!/bin/bash

step=$   #每多少秒执行一次

for (( i = ; i < ; i++ )); do
    date +%Y%m%d' '%H:%M:%S >> s.log
    curl https://car.etaiping.com:6004/ecms2/portal/gwzt/carType &> s.log
    echo >> s.log
    sleep $step
done

log backup：

#!/bin/bash
#author:xiluhua
#since:

#####################################################################
# $:the frequency to do log backup
# $:only if the number of log files reach v_count,log files will be backuped
# $:target directory that needs to do log backup
# $:the directory to put bakuped logs
#####################################################################

v_step=$
v_count=$
v_targDir=$
v_histDir=$

if [ -z $v_targDir ]
then
    echo "exception: argu 'v_targDir' is empty!"
    exit
fi

if [ -d $v_targDir ]
then
    # do nothing
    echo > /dev/null
else
    echo "exception: argu 'v_targDir' is not exist!"
    exit
fi

if [ -z $v_histDir ]
then
    echo "exception: argu 'v_histDir' is empty!"
    exit
fi

if [ -d $v_histDir ]
then
    # this is the key step to make the .gz file without directory
    cd $v_histDir
else
    echo "exception: argu 'v_histDir' is not exist!"
    exit
fi

if [ -z $v_step ]
then
    echo "v_step is empty!"
    exit
fi

if [ -z $v_count ]
then
    echo "exception: argu 'v_count' is empty!"
    exit
fi

let isProcExist=
# recycle endlessly
while [ "" = "" ]
do
    # if same job process already exists,sleep sometime
    while [ "" = "" ]
    do
        if [ $isProcExist -gt  ]
        then
            sleep $v_step
        else
            break
        fi
    done

    let isProcExist=

    files=$(find $v_targDir -name "*.log")
    count=$(ls $files | wc -l)

    #echo "count:"$count
    #echo "v_count:"$v_count

    if [ $count -ge $v_count ]
    then
        dir=$(date +%Y%m%d'_'%H%M%S)
        # give the value to bakDir
        bakDir=$dir

        mkdir $bakDir
        mv $files $bakDir
        #echo $bakDir'.tar.gz'
        tar -Pczf $bakDir'.tar.gz' $bakDir

        if [ $bakDir = "/" ]
        then
            clear
        else
            rm -r $bakDir
        fi
    fi
    sleep $v_step

    let isProcExist=
done

autoCreateFile：

#!/bin/bash
#author:xiluhua
#since:

v_step=$
if [ -z $v_step ]
then
    echo "exception: argu 'v_step' is empty!"
    exit
fi

cd ~/auto

for (( i = ; i < ; i=(i+step) )); do
    file1=$(date +%Y%m%d'_'%H%M%S)'_1.log'
    file2=$(date +%Y%m%d'_'%H%M%S)'_2.log'
    file3=$(date +%Y%m%d'_'%H%M%S)'_3.log'

    touch $file1 $file2 $file3
    sleep $v_step
done

batchRename：

#!/bin/bash
#author:xiluhua
#since:
#####################################################################
# $:the dir to do batch file rename
# $:name before rename
# $:name after rename
#####################################################################

dir=$
targ=$
repl=$

#check arguments is not empty and valid
if [ -z $dir ]
then
    echo "exception: argu 'dir' is empty!"
    exit
fi

if [ $dir = "/" ]
then
    echo "exception: argu 'dir' is invalid!"
    exit
fi

if [ -d $dir ]
then
    cd $dir
else
    echo "exception: argu 'dir' is not exist!"
    exit
fi

if [ -z $targ ]
then
    echo "exception: argu 'targ' is empty!"
    exit
fi

if [ -z $repl ]
then
    echo "exception: argu repl is empty!"
    exit
fi

# begin the main business
for i in $(ls *."$targ");do
#   echo $i
    tmp=${i/"$targ"/"$repl"}
#   echo $tmp
    mv -f $i $tmp
done