4,076 reputation
512
bio website systemajik.com
location Gatineau, Canada
age 59
visits member for 3 years, 6 months
seen yesterday
I have over 30 years experience in all phases of software development and delivery. I have administered a variety of midrange servers, and worked with systems from PCs to Mainframes.

Oct
14
answered Write access without read access
Sep
21
answered Backup a Windows PC to a Linux Machine
Sep
21
answered Unable to do paswordless ssh even after following standard procedure
Sep
17
comment How good is the support for NUT-based UPSs against APC?
I don't have any experience with CyberPower, but it appears that many of them are supported.
Sep
17
answered How good is the support for NUT-based UPSs against APC?
Aug
25
revised General Linux support for IPv6 ready?
Fix typo.
Aug
13
answered How to check if NTPD updates Linux machine's time successfully using shell?
Aug
7
comment What are software and hardware interrupts, and how are they processed?
The process is put on the stack while the driver is invoked and queues the I/O. Yes, the write process continues asynchronously after the call returns to the running process. The queue processing will mostly be handled during hardware interrupts for the device.
Aug
6
comment What are software and hardware interrupts, and how are they processed?
The requesting process will be put on the stack, but the device drive will queue the write. The stack will then be popped and the requesting process can continue.
Aug
6
comment What are software and hardware interrupts, and how are they processed?
Normally, I/O read is called synchronously and the process won't run until the I/O completes. For reads you almost always want this. Writes usually occur asynchronously allowing the process to continue running.
Aug
6
comment What are software and hardware interrupts, and how are they processed?
Either interrupt will cause the state to be pushed on the stack. This allows the system to reload the state when it is done with the interrupt.
Aug
4
answered How do I configure ssh tunneling past a firewall?
Aug
4
revised What are software and hardware interrupts, and how are they processed?
Respond to comment.
Aug
3
answered What are software and hardware interrupts, and how are they processed?
Jul
31
answered use iptables to allow incoming connections to some computer on port XYZ?
Jul
31
answered Trust a self signed PEM certificate
Jul
10
comment Backing up hard links (rsync)?
You shouldn't expect negative side effects other than increased disk usage. The links should be replaced if you reinstall the related packages. This might happen if you patch something. New /lib/modules directories get created when a new kernel patch is installed. cups uses a hardlink, where most applications would use a symbolic link. This is a rare occurance.
Jul
10
answered Backing up hard links (rsync)?
Jul
6
answered Forbid a given user to use a given range of port
Jun
28
comment setup fetchmail/exim4 to download from gmail account and forward to another email address
I've added additional information to my answer. Please note that what you are trying to do will break the ability to reply to most email.