Reputation
5,587
Top tag
Next privilege 10,000 Rep.
Access moderator tools
Badges
2 12 31
Newest
 Yearling
Impact
~618k people reached

Apr
20
answered What exactly does init do?
Feb
10
comment Run crontab only if condition
monit can check websites through ping or HTTP access and be customized to issue alerts intelligently.
Jan
25
comment How can I kill a process and be sure the PID hasn't been reused
Use killall which matches on name, so at least you are only killing a process with the same name as longrunningthing. Assuming you will only have one of these running at a time.
Jan
13
comment Cannot login for one user, changing password have no effect
Is /usr/bin/bash a symlink to /bin/bash? It may not work if it's a symlink.
Jan
13
comment Difference between /bin and /usr/bin
No, it's mounted at boot and stays mounted unless you unmount it, unless your system is configured unusually.
Dec
31
awarded  Yearling
Dec
29
comment Where to locate “sockets”
Kindly elaborate.
Dec
16
awarded  Good Answer
Dec
9
awarded  Nice Answer
Nov
21
comment Cannot load grub4dos through kexec
Can you boot grub4dos without going through kexec?
Nov
21
comment What is kernel ip forwarding?
@Sree: Yes, but it won't do NAT - you need iptables for that. If you don't want to route/forward packets, don't enable forwarding. It's unlikely a single IP/NIC system needs it enabled unless you are doing something weird with VPNs.
Oct
26
awarded  Famous Question
Oct
19
answered Debian init runlevels
Oct
18
comment Why is dd not protected against writing on the active disk ?
If you are using Debian, or dervied like Ubuntu, work from /dev/disk/by-id instead of the device names in /dev.
Oct
7
comment Can TCP provide more than 65535 ports?
More than 64K ports on a single system is impossible. More than 64K listeners is probably possible, but you have to have proxy or frontend listeners that would "split" incoming connections to the right real "backend" listeners. You could do something insane like an internal NAT to multiple internal IP addresses, for example.
Sep
24
awarded  Autobiographer
Sep
15
awarded  Nice Answer
Aug
28
comment What is the difference between building from source and using an install package?
For the hyperparanoid, one advantage of installing from source is security and the ability to review the code if you are able to and or want to: when you install from source, you know for a fact you have a binary from that source code and not a binary with unknown modifications (assuming you trust the source in the first place).
Aug
18
comment Why doesn't the sudo command need the root password?
sudo has the "setuid" bit set. So it runs as the user who owns it (which is root on all standard systems if I'm not mistaken), not the user who launches it. sudo then loads the /etc/sudoers file and checks what is allowed based upon who launched it.
Aug
9
awarded  Revival