Practical deep-dives on Linux, AI, and large language models. 290+ technical articles for developers, sysadmins, and AI engineers.
kickstart postinstall, you can read how to do this on the internet.
wget http://foo/tools.tar.gz
tar xzvf *.tar.gz
cd directory-where-you-untarred
vmware-tools-install.pl -d
BINGO !
Giggidi Giggidi
While this is a Linux forum this came in REALLY handy so what the heck 🙂
Frustratingly hidden away, windows command for putting the machine into Hibernate and / or standby are hidden away in the api under the powrprof.dll library.
Shutdown %windir%\System32\shutdown.exe -s
Reboot %windir%\System32\shutdown.exe -r
Logoff %windir%\System32\shutdown.exe -l
Standby %windir%\System32\rundll32.exe powrprof.dll,SetSuspendState Standby
Hibernate %windir%\System32\shutdown.exe -h OR
%windir%\System32\rundll32.exe powrprof.dll,SetSuspendState Hibernate
Also if you Windows 7 wakes up and you don’t know why check:
powercfg lastwake
Hope this helps.
Let’s say you have a subnet 192.168.1.0 / 24 and you want to scan all ip’s to see if any hosts are up:
Type the following command, enter:
$ for ip in $(seq 1 254); do ping -c 1 192.168.1.$ip>/dev/null; [ $? -eq 0 ] && echo “192.168.1.$ip UP” || : ; done
Output:
192.168.1.65 UP
192.168.1.66 UP
192.168.1.70 UP
192.168.1.76 UP
192.168.1.253 UP
192.168.1.254 UP
Debian based systems use the file /etc/hostname to read the hostname of the computer at boot time and set it up using the init script /etc/init.d/hostname.sh
One can edit the file /etc/hostname and change the hostname and then run:
/etc/init.d/hostname.sh start
Update /etc/hosts ip 127.0.0.1 respectively ( leave the localhost entry untouched)
Steps:
Ref: http://sysblogd.com/50/change-hostname-permanently-on-debian-or-ubuntu.htm
Installing SNMP daemon and tools:
As root
yum -y install net-snmp.i686
yum -y install net-snmp-utils
Once these are installed start the snmp daemon:
/etc/init.d/snmpd start
chkconfig snmpd on
This is just the basic install but testing it :
snmpwalk -v 1 -c public -O e 127.0.0.1
For production servers it is advisable to at least change the community name.
All configs are in
/etc/snmp/snmpd.conf
and traps are setup here:
/etc/snmp/snmptrapd.conf
No traps are set by default.
Enjoy !!
While trying to run phptop after unzipping it I get the following error:
[root@torino phptop-0.5.3]# ./phptop Can't locate Term/Size.pm in @INC (@INC contains: /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 .) at ./phptop line 24. BEGIN failed--compilation aborted at ./phptop line 24. [root@torino phptop-0.5.3]#
To fix it I had to follow the coming steps:
[root@torino phptop-0.5.3]# yum install cpan Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: it.centos.contactlab.it * epel: mirror.karneval.cz * extras: it.centos.contactlab.it * updates: mirror.bofh.so Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package perl-CPAN.i686 0:1.9402-127.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: perl-CPAN i686 1.9402-127.el6 base 244 k Transaction Summary ================================================================================ Install 1 Package(s) Total download size: 244 k Installed size: 663 k Is this ok [y/N]: y Downloading Packages: perl-CPAN-1.9402-127.el6.i686.rpm | 244 kB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : perl-CPAN-1.9402-127.el6.i686 1/1 Verifying : perl-CPAN-1.9402-127.el6.i686 1/1 Installed: perl-CPAN.i686 0:1.9402-127.el6 Complete! [root@torino phptop-0.5.3]#
Then run cpan
[root@torino phptop-0.5.3]#cpan
And you will be asked whether to accept default answers just press <ENTER>/
Lots of test later you are presented with the cpan prompt tyoe install Term::Size as follows:
ommit: wrote '/usr/share/perl5/CPAN/Config.pm' Terminal does not support AddHistory. cpan shell -- CPAN exploration and modules installation (v1.9402) Enter 'h' for help. cpan[1]> install Term::Size
After a long verbose build process assuming all went well ( you need internet connectivity to perform this step) type quit at the prompt as so:
cpan[2]> quit
This returns you to the shell prompt:
[root@torino phptop-0.5.3]# ./phptop No phptop records found. [root@torino phptop-0.5.3]#
Voila !!! the program is working.The error is due to the lack of page reads as yet but the program compiled (JIT) and ran.
It is sometimes useful not only to know your repo list covers you for all the stack of software you want but also where does a package actually reside.
The repoquery command comes to the rescue.
EPEL stands for Extra Packages for Enterprise Linux. This is a massive collection of packages that are very useful for the building of many modern stacks and include many tools for the running and maintenance of systems.
The homepage of EPEL is here: http://fedoraproject.org/wiki/EPEL.
You can browse the package set using repoview:
Installing on Centos 5.x & 6.x:
For EL5:
su -c 'rpm -Uvh http://mirror.switch.ch/ftp/mirror/epel/5/i386/epel-release-5-4.noarch.rpm' ... su -c 'yum install puppet'
For EL6:
su -c 'rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm' ... su -c 'yum install puppet'
For EL7
sudo yum install epel-release
#vim /etc/sysconfig/network
Use something like
HOSTNAME=testarossa.maranello.local
to overwrite the default name and domain of the server.
e.g.
NETWORKING=yes HOSTNAME=testarossa.maranello.local
To avoid rebooting issue the following :
hostname testarossa.maranello.local
That will set it for the current session.
To monitor TCP and UDP connections the following command is very useful:
netstat -t -u
to have a continuous update use the watch command:
watch netstat -t -u
There is a much stronger tool for real time analysis called iptraf.
It is quite self explanatory :
at command line run
iptraf
This tool has many functions and is text mode menu ncurses based application really worth learning.