linux操作

1.查找定时任务的命令  crontab -l 

2.编辑定时任务的内容 crontab -e

3.删除所有的定时任务 crontab -r 

4.python生成的文件指定存储路径

def wfile(path,cur):
  sql = 'select * from parts_num '
  cur.execute(sql)
  rows = cur.fetchall();
  for row in rows:
    row0 = str(row[0])
    row1 = str(row[1])
    row2 = str(row[2])
    filename = row0 + row1 +'.txt'
    if not os.path.exists(path):
        os.makedirs(path)
    if os.path.exists(path + filename):
        output = open(path + "/" + filename, 'a')
        output.write(row0+row1+row2+'\n')
    else:
        output = open(path + "/" + filename, 'w')
        output.write(row0+row1+row2+'\n')
    output.close()
  cur.close()