python 使用shell 命令

>>> import commands >>> r = commands.getstatusoutput('wc -l /home/ramdump/Port_COM30_wenshuai/load.cmm') >>> print r (0, '101 /home/ramdump/Port_COM30_wenshuai/load.cmm') >>> print r[1] 101 /home/ramdump/Port_COM30_wenshuai/load.cmm >>> type(r[1]) <type 'str'> >>> cmd = 'wc -l /home/ramdump/Port_COM30_wenshuai/load.cmm' >>>  >>> r = commands.getstatusoutput(cmd) >>> print r[1] 101 /home/ramdump/Port_COM30_wenshuai/load.cmm >>>  >>> cmd1 = 'head -c 1024M /home/ramdump/Port_COM30_wenshuai/DDRCS0_0.BIN | strings -n 1 | grep "Linux version"' >>>  >>> r = commands.getstatusoutput(cmd1) >>> print r[1] Linux version 4.4.21-perf-gfef4cd4 (builder@phone-bsp-228-50) (gcc version 4.9 20150123 (prerelease) (GCC) ) #1 SMP PREEMPT Wed Apr 12 04:34:15 CST 2017 Linux version  Linux version 4.4.21-perf-gfef4cd4 (builder@phone-bsp-228-50) (gcc version 4.9 20150123 (prerelease) (GCC) ) #1 SMP PREEMPT Wed Apr 12 04:34:15 CST 2017 >>>  >>> type(r[1])

<type 'str'>

返回的结果是个tuple, (0, xxx) 0表示命令的状态

>>> type(r[0]) <type 'int'>