如运行
$cmd = "export LANG=C; /usr/bin/sudo /sbin/vgdisplay";
$info = popen($cmd,'r');
echo $info;
得出的是Resource id #17
就是用php的popen()函数运行了一个linux命令,把这个命令得到的结果$info输出出来是Resource id #17,如何把Resource id #17给解析出来。在linux里运行这个命令显示的是
--- Volume group ---
VG Name
localhost
System ID
Format
lvm2
Metadata Areas
1
Metadata Sequence No3
VG Access
read/write
VG Status
resizable
MAX LV
0
Cur LV
2
Open LV
2
Max PV
0
Cur PV
1
Act PV
1
VG Size
232.64 GB
PE Size
4.00 MB
Total PE
59557
Alloc PE / Size
59557 / 232.64 GB
FreePE / Size
0 / 0
VG UUID
xhGwsx-3SDn-2mgR-XBrE-Nwtt-uJDM-lW7MB1