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computer science guy. fascinated by machine learning. so much to learn still...


Jul
21
comment How to make user passwords shown as a clear text in Linux?
it is not true that passwords are stored in /etc/passwd. At least not in the past ~20 years, since /etc/shadow was invented. The 'x' you see there is not the encrypted password. It is a literal 'x' which can not possibly match any MD5 or SHA1 etc sig.
Jul
9
comment What is the difference between these two SSHD configs?
I mean that just by reading the man pages, Raza's answer sounds correct. Of course, to really be sure someone should actually verify it before answering :)
Jul
9
comment What is the difference between these two SSHD configs?
@HaukeLaging, are you really sure about this? The Match section in sshd_config(5) and the PATTERNS section in ssh_config(5) seem to disagree with this accepted answer by my reading of them.
Jul
9
comment What is the difference between these two SSHD configs?
The openssh man page says By default, login is allowed for all groups this seems to imply that * at the beginning is redundant because it is the default, and !root is the same as *,!root.
Mar
3
comment Subtract 1 from all file names (rename them) in a directory.
replace the * at the end with `ls -v1 *` and you'll be safer from clobbering. It'll go from the lowest number to highest.
Dec
14
comment linux: How can I view all UUIDs for all available disks on my system?
Just a minor comment: looks like being a member of group disk is sufficient to run blkid; no need for full superuser privileges.
May
13
comment Why does the “she-bang” begin with a “#!”?
Or to be more detailed: the shebang: '#!' is designed not to be seen by the interpreter -- thus it must start with the comment char '#'. Instead, it is 'seen' (and interpreted) by the kernel 'exec[lv]*' set of system calls.
Apr
1
comment BUG: soft lockup - CPU# stuck for x seconds
+1 for the data analysis and ggplot charts :)
Feb
18
comment What killed tty main process suddenly?
Is this running in a virtual machine? e.g. VMware? Is the system disk a local or virtual disk (connected over the network)? Was some underlying hardware restarted/recycled at the same time?