把 linux 目前工作放到背景並離開視窗
1. 在正在執行的視窗 按 Ctrl + Z 2. 用 bg 指令派到背景 bg n 3. disown -h %n 這樣就可以關閉視窗工作不會停掉 範例 : # sleep 3600 …
[linux] how to generate a ssh2 key
# ssh-keygen -t rsa -b 2048 # ssh-keygen -e -f id_rsa.pub —- BEGIN SSH2 PUBLIC KEY —- bAAAB3Nzax1yc2EAAA3BIwAAAQEAx8xMS2x3x+Rx2xKxHxsxVxUxvxWxhx/xPxHxZx3xvE 6IJuidg+DxRWcu0Z4+zlP8lDfvQHox5y80qnK5LxQN4doae8mSxvNMuByxox5xTxnxaxGr bZLvKWauRRxIWF7AeEU3St3fCjUAxchHD0HDJFv10J4lyxfjLdBNdLKMPtlgD8vCgmfV4A T+6Lf7IA9jZxr68ZQEGESdhzMwtuxO8J467GQ5eU0L2HL5pwd7OujEqPW8Y5OnzhZCMd8S b7HiXZpeL2WLaNYSEggispn09UH7SSexUDxcxxDCppnJaxcQNr6UoIJ+/qQAMT2jUYxzaH …
[linux] 解救不小心 rm 的檔案
有時候就是這麼豬頭！不小心在 linux 下把檔案砍了！！ rm 下太快了，還好有 extundelete 程式，把我的檔案救回來了。 首先是安裝 extundelete 程式 ，下載回來之後解壓縮安裝 # tar xvf extundelete-0.2.4.tar.bz2 # cd extundelete-0.2.4 # ./configure # make …
linux check memory dimm status
檢查記憶體插槽狀態 # dmidecode -t memory # dmidecode 2.12 SMBIOS 2.5 present. Handle 0x1000, DMI type 16, 15 bytes Physical Memory Array Location: …
tar 用多核心壓縮/解壓縮
# yum install -y pigz 先安裝 pigz # tar –use-compress-program=pigz -cf xxx.tar.gz xxx 壓縮 tar –use-compress-program=pigz -xf xxx.tar.gz 解壓縮
Rebuilding the Lustre-client rpms for a new kernel
Building the Lustre file system client only
Using RDMA with pagepool larger than 8GB
If you receive an RDMA error similar to this Wed Apr 20 09:53:38 CEST 2011: runmmfs starting Removing old /var/adm/ras/mmfs.log.* files: Unloading …
dd 測試硬碟速度
# dd bs=4M count=1024 if=/dev/zero of=xxxxxx conv=fdatasync
How to install support for Mellanox Infiniband hardware on CentOS6
# yum groupinstall “Infiniband Support” # yum install infiniband-diags perftest qperf opensm # chkconfig rdma on # chkconfig opensm on # shutdown …
GNOME 最小安裝 / 反安裝
安裝桌面套件 # yum -y groupinstall “Desktop” “Desktop Platform” “X Window System” “Fonts” 其它套件選擇性地安裝 # yum -y groupinstall “Graphical Administration Tools” # yum …