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| DATE | 2022-05-04 |
| FROM | From: "nixCraft: Linux Tips, Hacks, Tutorials,
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| SUBJECT | Subject: [Hangout - NYLXS] nixCraft Linux / UNIX Newsletter
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Date: Wed, 04 May 2022 21:05:27 +0000
From: "nixCraft: Linux Tips, Hacks, Tutorials,
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nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)
///////////////////////////////////////////
Understanding the /etc/shells file
Posted: 04 May 2022 01:31 PM PDT
https://bash.cyberciti.biz/guide//etc/shells
{Updated} Did you know? Many Linux system services and login under Linux or
Unix OS consult /etc/shells file. It contains a list of login shells on the
system. Applications use this file to determine whether a shell is valid.
Setting the wrong shell path will deny login.
The post Understanding the /etc/shells file appeared first on nixCraft.
///////////////////////////////////////////
How to make disk image with dd on Linux or Unix
Posted: 04 May 2022 01:26 PM PDT
https://www.cyberciti.biz/faq/unix-linux-dd-create-make-disk-image-commands/
{Updated} How to make disk image with dd on a Linux or Unix for backup and
restore purposes
The post How to make disk image with dd on Linux or Unix appeared first on
nixCraft.
///////////////////////////////////////////
A cautionary tale about locking Linux & FreeBSD user accounts
Posted: 04 May 2022 12:52 PM PDT
https://www.cyberciti.biz/networking/a-cautionary-tale-about-locking-linux-freebsd-user-accounts/
Like every other solo developer and sysadmin, I do stuff using ssh. Some
stuff is automated using scripts, and others require ssh login. For
example, one of my scripts logs into my Linux and FreeBSD server using
public ssh keys and does a particular type of work for me. I have a
dedicated user account for that purpose called autovivek on Raspberry PI 4
for Ansible and custom script automation. Here is how it works:
{rpi4:~}$ ssh autovivek-at-192.168.2.17 /path/to/taks1
In other cases, it sends scripts and then executes them on the remote
server named 192.168.2.17. Sounds good, right? So, when I need to make
backups and other tasks, I lock down the autovivek user account on the
server so that it will not modify data on disks. For example, here is how
to lock down a user account:
{linux-server:~}$ sudo usermod -L -e 1 autovivek
## OR ##
{freebsd-server:~}$ sudo pw lock -n autovivek
A cautionary tale about locking Linux and FreeBSD user accounts
However, I soon discovered that a user named autovivek can still log into
the server and make changes despite being locked down on both Linux and
FreeBSD servers.
Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit
The post A cautionary tale about locking Linux & FreeBSD user accounts
appeared first on nixCraft.
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nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Fo=<BR>rmat (RSS/FEED)
=3D"margin:0 2em;font-family:Arial, Helvetica, sans-serif;line-height:140%;= font-size:13px;color:#000000;">
tica, sans-serif;font-size:18px;" href=3D"https://bash.cyberciti.biz/guide/=
/etc/shells">Understanding the /etc/shells file
3px 0;font-family:Arial, Helvetica, sans-serif;line-height:140%;font-size:1=
3px;">
Posted: 04 May 2022 01:31 PM PDT
, sans-serif;line-height:140%;font-size:13px;color:#000000;"> ![]() "0" src=3D"https://bash.cyberciti.biz/uploads/bashwiki/thumb/9/93/Understan= ding_Linux_and_Unix_-etc-shells_file.png/800px-Understanding_Linux_and_Unix= _-etc-shells_file.png"> { Updated} Did you know? M= any Linux system services and login under Linux or Unix OS consult /etc/she= lls file. It contains a list of login shells on the system. Applications us= e this file to determine whether a shell is valid. Setting the wrong shell = path will deny login. The post de//etc/shells">Understanding the /etc/shells file appeared first on href=3D"https://www.cyberciti.biz/">nixCraft.
|
tica, sans-serif;font-size:18px;" href=3D"https://www.cyberciti.biz/faq/uni=
x-linux-dd-create-make-disk-image-commands/">How to make disk image with dd=
on Linux or Unix
3px 0;font-family:Arial, Helvetica, sans-serif;line-height:140%;font-size:1=
3px;">
Posted: 04 May 2022 01:26 PM PDT
|
tica, sans-serif;font-size:18px;" href=3D"https://www.cyberciti.biz/network=
ing/a-cautionary-tale-about-locking-linux-freebsd-user-accounts/">A caution=
ary tale about locking Linux & FreeBSD user accounts
3px 0;font-family:Arial, Helvetica, sans-serif;line-height:140%;font-size:1=
3px;">
Posted: 04 May 2022 12:52 PM PDT
, sans-serif;line-height:140%;font-size:13px;color:#000000;"> |
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_______________________________________________
Hangout mailing list
Hangout-at-nylxs.com
http://lists.mrbrklyn.com/mailman/listinfo/hangout
--===============0381983169==--
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Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes
nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)
///////////////////////////////////////////
Understanding the /etc/shells file
Posted: 04 May 2022 01:31 PM PDT
https://bash.cyberciti.biz/guide//etc/shells
{Updated} Did you know? Many Linux system services and login under Linux or
Unix OS consult /etc/shells file. It contains a list of login shells on the
system. Applications use this file to determine whether a shell is valid.
Setting the wrong shell path will deny login.
The post Understanding the /etc/shells file appeared first on nixCraft.
///////////////////////////////////////////
How to make disk image with dd on Linux or Unix
Posted: 04 May 2022 01:26 PM PDT
https://www.cyberciti.biz/faq/unix-linux-dd-create-make-disk-image-commands/
{Updated} How to make disk image with dd on a Linux or Unix for backup and
restore purposes
The post How to make disk image with dd on Linux or Unix appeared first on
nixCraft.
///////////////////////////////////////////
A cautionary tale about locking Linux & FreeBSD user accounts
Posted: 04 May 2022 12:52 PM PDT
https://www.cyberciti.biz/networking/a-cautionary-tale-about-locking-linux-freebsd-user-accounts/
Like every other solo developer and sysadmin, I do stuff using ssh. Some
stuff is automated using scripts, and others require ssh login. For
example, one of my scripts logs into my Linux and FreeBSD server using
public ssh keys and does a particular type of work for me. I have a
dedicated user account for that purpose called autovivek on Raspberry PI 4
for Ansible and custom script automation. Here is how it works:
{rpi4:~}$ ssh autovivek-at-192.168.2.17 /path/to/taks1
In other cases, it sends scripts and then executes them on the remote
server named 192.168.2.17. Sounds good, right? So, when I need to make
backups and other tasks, I lock down the autovivek user account on the
server so that it will not modify data on disks. For example, here is how
to lock down a user account:
{linux-server:~}$ sudo usermod -L -e 1 autovivek
## OR ##
{freebsd-server:~}$ sudo pw lock -n autovivek
A cautionary tale about locking Linux and FreeBSD user accounts
However, I soon discovered that a user named autovivek can still log into
the server and make changes despite being locked down on both Linux and
FreeBSD servers.
Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit
The post A cautionary tale about locking Linux & FreeBSD user accounts
appeared first on nixCraft.
--
You are subscribed to email updates from "nixCraft: Linux Tips, Hacks,
Tutorials, And Ideas In Blog Format (RSS/FEED)."
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Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States
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Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
TF-8">
nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Fo=<BR>rmat (RSS/FEED)
=3D"margin:0 2em;font-family:Arial, Helvetica, sans-serif;line-height:140%;= font-size:13px;color:#000000;">
tica, sans-serif;font-size:18px;" href=3D"https://bash.cyberciti.biz/guide/=
/etc/shells">Understanding the /etc/shells file
3px 0;font-family:Arial, Helvetica, sans-serif;line-height:140%;font-size:1=
3px;">
Posted: 04 May 2022 01:31 PM PDT
, sans-serif;line-height:140%;font-size:13px;color:#000000;"> ![]() "0" src=3D"https://bash.cyberciti.biz/uploads/bashwiki/thumb/9/93/Understan= ding_Linux_and_Unix_-etc-shells_file.png/800px-Understanding_Linux_and_Unix= _-etc-shells_file.png"> { Updated} Did you know? M= any Linux system services and login under Linux or Unix OS consult /etc/she= lls file. It contains a list of login shells on the system. Applications us= e this file to determine whether a shell is valid. Setting the wrong shell = path will deny login. The post de//etc/shells">Understanding the /etc/shells file appeared first on href=3D"https://www.cyberciti.biz/">nixCraft.
|
tica, sans-serif;font-size:18px;" href=3D"https://www.cyberciti.biz/faq/uni=
x-linux-dd-create-make-disk-image-commands/">How to make disk image with dd=
on Linux or Unix
3px 0;font-family:Arial, Helvetica, sans-serif;line-height:140%;font-size:1=
3px;">
Posted: 04 May 2022 01:26 PM PDT
|
tica, sans-serif;font-size:18px;" href=3D"https://www.cyberciti.biz/network=
ing/a-cautionary-tale-about-locking-linux-freebsd-user-accounts/">A caution=
ary tale about locking Linux & FreeBSD user accounts
3px 0;font-family:Arial, Helvetica, sans-serif;line-height:140%;font-size:1=
3px;">
Posted: 04 May 2022 12:52 PM PDT
, sans-serif;line-height:140%;font-size:13px;color:#000000;"> |
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_______________________________________________
Hangout mailing list
Hangout-at-nylxs.com
http://lists.mrbrklyn.com/mailman/listinfo/hangout
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