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I'm an aged (over 30) OS enthusiast. Previously, as a developer in a small work group, I became the sysadmin by default since I was the only developer with a dozen users in a growing AIX environment.

Early Linux adopter, installing Slackware with 30+ floppies. I've installed most variants of Unix, Linux, Plan9, mkLinux, NeXtSTEP 486, BSD/386, NetBSD, FreeBSD, and I'm still waiting on HURD :)

Using Windows, I am limited by Windows. In Unix, I'm only limited by my knowledge of Unix.


22h
comment In Archlinux, it has a valid ip, but no connection could established
Take a look at the Arch Wiki Wireless page, there's a complete section on driver troubleshooting, but you should probably read and follow the article from the start.
2d
revised How to show line numbers in vim on the right side of the buffer?
added 61 characters in body
2d
answered How to show line numbers in vim on the right side of the buffer?
Dec
17
comment archlinux cannot execute java after update
I asked you to run file on the command to find out what type of file it is. Also simple ls to check permissions, and please update/edit your question so as to prevent running commentary.
Dec
17
comment archlinux cannot execute java after update
Could you please add the output of the following archlinux-java status as well as file /usr/lib/jvm/default/jre/bin/java ? Also look for any java related comments in /var/log/pacman.log
Dec
17
comment archlinux cannot execute java after update
Do you check Arch's home page before updating? In particular there was a Java comment a few months ago here
Dec
15
reviewed Close Some basic questions about Linux kernel's security
Dec
14
comment Backup to flash drive using rsync
rsync is a remote sync command. To backup directly to a mounted device you could use many different commands, tar cp fsarchiver to name a few.
Dec
9
comment Is possible for a manufacturer to fake the RAM limit in the DMI table?
Unless you're doing intensive graphic/image file processing and/or file system compression 16GB is a lot for a typical linux laptop. Any more than that could be a waste of money.
Dec
1
awarded  Yearling
Nov
30
comment Remove a carriage return with sed
tr -d "\r" will delete the carriage returns.
Nov
22
comment Create a volume group from a logical volume instead of a physical volume
I don't agree that resizing is complicated or risky, assuming one has a current backup handy. Occam's razor is the principle I admin by, adding no more complexity than necessary. If one must configure a nested VG/LV, then there should be a good reason to do so (use case). In my experience I've found the greatest risk to data usually comes from human error, again: backup!
Nov
15
comment how to write dd command to replace backup image of root partition?
Can't do that using dd, you need something more selective like tar, zip or even cpio.
Nov
15
comment how to write dd command to replace backup image of root partition?
If I read your question correctly, it sounds like you wish to reinstall the OS and then reapply your configuration changes. If that is the case, you need only backup the few files you edited, reinstall the OS, and then carefully reapply your changes.
Nov
14
comment Can we add home partition by adding an additional hard disk?
xfs allows extending too.
Nov
11
comment Can we add home partition by adding an additional hard disk?
That depends on the type of filesystem /home is on. You may have to move the data as outlined in one answer. You may be able to extend /home. What is the fs type of /home? Are you using LVM?
Nov
7
comment Is partition table type “loop” a good or bad idea on BTRFS?
Could you add the command you used to create the btrfs filesystem to your question? How many disks? RAID?
Oct
31
comment su cannot execute bin/bash/****
Does su - work?
Oct
23
comment Is the EFI boot loader not in MBR?
The EFI boot loader is in its own partition, type EF00, formatted vfat. The EFI loader resides on the filesystem, but isn't necessarily in the first N blocks. What is it you want to do?
Oct
16
reviewed Close What are the types of ~, ~-, ~+, *?