linux 刪除所有文件夾下指定文件名的文件
# find / -name this.html~ |xargs rm -rf
修改Ubuntu MAC地址
臨時：（只修改一次，重啓後設置消失）
1）sudo ifconfig eth0 down
# 先關閉網卡（eth0爲要修改MAC地址的網卡的標識符）是零不是O
2）sudo ifconfig eth0 hw ether AA:BB:CC:DD:EE:FF
# 將eth0的MAC地址改成AA:BB:CC:DD:EE:FF
# ubuntu下MAC地址都是兩位兩位以：隔開的只是一種格式而已，但是所有的地址符號都要打上
3）sudo ifconfig eth0 up
# 修改完成，重新啓用網卡
永久
sudo gedit /etc/resolv.conf
name server **************
name server ************** 這裏填寫首選DNS，備用DNS
sudo gedit /etc/network/interfaces
輸入以下內容：
auto eth0
iface eth0 inet static
pre -up ifconfig eth0 hw ether **:**:**:**:'''''''''''''
address *************** IP地址
netmask *************** 子網掩碼255：255：255：0
getway **************** 網關
exit 0 karlyan
打下列命令
sudo /etc/init.d/networking restart 重啓網絡Comet Interactive Job submit
https://portal.xsede.org/sdsc-trestles
Trestles provides the parallel debugger DDT. To use the program, log into trestles with X11 tunneling enabled:
ssh -X [email protected]
Compile your code with the option -g to enable debugging. After, start a interactive session with the number of processors desired (max of 64):
qsub -I -X -l nodes=2:ppn=16,walltime=1:00:00 -q shared
Once on the compute node, load the ddt module via:
module load ddt
If you use mvapich2, be sure to start the message passing daemons (if using OpenMPI you can skip this step):
mpdboot -n 2 -f $PBS_NODEFILE
Start ddt by running:
ddt ./<program.exe>
In the GUI, select the number of processors to run with and start the program. More specifics on using DDT can be found in the DDT user guide at http://www.allinea.com/downloads/userguide.pdf.下一個
這裏寫代碼片