Notes
To find out the previous kernel version on CentOS after a reboot, you can use the rpm command to query the package database. Here are the steps:
Open a terminal or SSH session to your CentOS server.
Type the following command to list all installed kernels:
rpm -qa | grep "kernel-[0-9]"
This will output a list of all installed kernel packages.… Read the rest
cd /usr/local/src/ wget http://ftp.tu-chemnitz.de/pub/linux/dag/redhat/el6/en/x86_64/rpmforge/RPMS/realpath-1.17-1.el6.rf.x86_64.rpm rpm -Uvh realpath-1.17-1.el6.rf.x86_64.rpm
Source: https://centos.pkgs.org/6/repoforge-x86_64/realpath-1.17-1.el6.rf.x86_64.rpm.html… Read the rest
Check Tweak Settings, should be ‘0’
cat /var/cpanel/cpanel.config |grep skipmailman
skipmailman=0
Deprecated scripts
/scripts/reinstallmailman /usr/local/cpanel/bin/mailman-install --force
Deprecated scripts:
/usr/local/cpanel/scripts/update_local_rpm_versions --edit target_settings.mailman installed /usr/local/cpanel/scripts/check_cpanel_rpms --fix --targets=mailman
The latest way to reinstall mailman on cPanel server:
rpm -e --nodeps cpanel-mailman /usr/local/cpanel/scripts/check_cpanel_rpms --fix --targets=mailman
Run upcp:
/scripts/upcp --force
systemctl start mailman.service… Read the rest
Enable epel repository if needed
## RHEL/CentOS 7 64-Bit ## wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm rpm -ivh epel-release-latest-7.noarch.rpm
yum install atop -y
Useful URLs:
https://www.tecmint.com/how-to-enable-epel-repository-for-rhel-centos-6-5/
https://www.tecmint.com/how-to-install-atop-to-monitor-logging-activity-of-linux-system-processes/… Read the rest
pico doesn't go with Centos.
As result you can get something like the following:
crontab -e /bin/sh: pico: command not found crontab: "pico" exited with status 127
To get rid of this error, do the following:
Install nano editor if needed:
yum install nano -y
And run:
cd /usr/bin/ ln -s nano pico export EDITOR="pico"… Read the rest
Run from a command line:
export EDITOR=/bin/vi export VISUAL=vi
or
export EDITOR=/usr/bin/vim export VISUAL=vim
or
export EDITOR=/bin/nano export VISUAL=nano… Read the rest
Find the latest version under the following link:
http://curl.haxx.se/download/?C=M;O=D
For instance curl-7.46.0 version
Download and install it
cd /usr/local/src/ curl http://curl.haxx.se/download/curl-7.46.0.tar.gz | tar xvz cd curl-7.46.0/ ./configure && make && make install curl -V… Read the rest