1,407 reputation
1711
bio website redhardsupra.blogspot.com
location Laurel, MD
age 37
visits member for 5 years, 6 months
seen 20 hours ago

Oct
27
comment How secure is SSH ForceCommand on a jump host?
Where are you going to store the .bashrc with commands you want it to run then?
Oct
27
answered How secure is SSH ForceCommand on a jump host?
Sep
19
comment Samsung 840 Pro SSDs in a Dell R720
Yes, this is first hand experience in 2011-2012 era. The support process consists of them asking questions until they find something that voids the warranty, and then they 'cannot help you.' I don't know about supporting everything else, as everything else was fine and didn't need any servicing. Long story short, they're useless until you give into their hardware pricing. Not all projects can afford their 300-500% premium over retail equivalent of their disks.
Sep
19
comment Samsung 840 Pro SSDs in a Dell R720
If you put non-Dell drives in Dell server, they will refuse any support on that server. They're basically forcing you to buy their expensive drives. A$$holes.
Aug
29
awarded  Nice Answer
Aug
29
awarded  Popular Question
Jul
23
accepted Can ESXi pass video card to VM to do CUDA?
Jun
19
answered How can I disable encryption on openssh?
Jun
6
comment Allow SCP but not actual login using SSH
ForceCommand internal-sftp -u 0077 -d /uploaddir can farther harden it, by forcing a umask on an upload directory. In conjunction with 'ChrootDirectory` it creates a very controlled, isolated upload environment. Bonus note: the default dir and the umask must be set in the ForceCommand, not in the Subsystem directive, if you want them to work.
May
27
awarded  Yearling
Apr
28
revised Tail multiple remote files
typo
Feb
18
awarded  Custodian
Feb
18
reviewed Approve Tail multiple remote files
Jul
30
comment What is the maximum length of a wifi access point's SSID?
The question was about length, and length is irrelevant. The fact that it's not a default, especially in WPA where SSID is used as a salt, it needs to be as random as possible, so in that sense, changing it to something non-default is a good thing.
May
27
awarded  Yearling
May
23
comment Best way to go about changing a root password on 3000+ Solaris, AIX, and Linux servers?
Please do not put cleartext passwords on commandline, as it gets logged in shell history. Or set the shell history to /dev/null before you do it.
Apr
11
awarded  Notable Question
Jan
7
comment Very slow write performance on Debian 6.0 (AMD64) with DMCRYPT/LVM/RAID1
How does the write performance change when you mount it without sync?
Dec
20
comment Linux Experts Riddle: Network output of 10MB/s on 10GB/s NIC
When copying files over network pipes, turn off compression, copy a file from a ramdisk to another ramdisk, or something simpler, like stream reading /dev/zero, xfering it, and then dumping it out to /dev/null. When dd'ing, remember to play with block sizes and flags on BOTH sides (especially flags might not be symmetric!). When playing with qperf/iperf/netperf, make sure you're controlling window sizes and TCP congestion algorithms. Watch switch statistics. If not meaningful, connect two boxes directly, see if it changes anything. Install new drivers, especially Intel, both Win and LNX.
Oct
18
comment Is there a tool that can take partition table information and partition another based on it?
parted should do it. it can print out partitions in any unit you want, and then more invocations of parted would recreate it step by step.