deviousway

    php_version: 7.4
    php_version_redhat: "{{ php_version | regex_replace ('[.~]', '') }}"

###Will return
###"msg": 74

deviousway

for file in /proc/*/status ; do awk '/VmSwap|Name/{printf $2 " " $3}END{ print ""}' $file; done | sort -k 2 -n -r | less

deviousway

#on old
mysqldump  -udebian-sys-maint -p$PASSWORD  mysql user >  user_table_dump.sql
#on new
mysql -udebian-sys-maint -p$PASSWORD  mysql <  user_table_dump.sql
#login to mysql
mysql> flush privileges;

deviousway

 rsync  -rtvzplogDH --numeric-ids --exclude=/etc/fstab --exclude=/etc/network/* --exclude=/proc/* --exclude=/tmp/* --exclude=/sys/* --exclude=/dev/* --exclude=/mnt/* --exclude=/boot/*  /* root@$DESTINATION_HOST:/

deviousway

mkdir move/
export UGIDLIMIT=500
awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/passwd > /root/move/passwd.mig
awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/group > /root/move/group.mig
awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534) {print $1}' /etc/passwd | tee - |egrep -f - /etc/shadow > /root/move/shadow.mig
cp /etc/gshadow /root/move/gshadow.mig

scp -r /root/move/* [email protected]:/path/to/location

mkdir /root/newsusers.bak

deviousway

##how to show docker run line command

docker ps -a --no-trunc

deviousway

OpenVPN Setup

Install packages

yum  -y install epel-release 
yum --enablerepo=epel -y openvpn easy-rsa net-tools bridge-utils iptables-services mlocate wget htop nano

easy-rsa3 certificates

deviousway

Here are some useful things to know for managing an Exim 4 server. This assumes a prior working knowledge of SMTP, MTAs, and a UNIX shell prompt.

Message-IDs and spool files The message-IDs that Exim uses to refer to messages in its queue are mixed-case alpha-numeric, and take the form of: XXXXXX-YYYYYY-ZZ. Most commands related to managing the queue and logging use these message-ids.

There are three -- count 'em, THREE -- files for each message in the spool directory. If you're dealing with these files by hand, instead of using the appropriate exim commands as detailed below, make sure you get them all, and don't leave Exim with remnants of messages in the queue. I used to mess directly with these files when I first started running Exim machines, but thanks to the utilities described below, I haven't needed to do that in many months.

Files in /var/spool/exim/msglog contain logging information for each message and are named the same as the message-id.

Files in /var/spool/exim/input are named after the mes

deviousway

 sed -i 's/domain1\.com/domain2\.com/d'

sed -i '/<?php/c\<?php'
#Add line (/n) after line what contain pattern
grep -rl 'pattern' public_html/ |xargs sed -i "s/1; ?>/1; ?>\n/g"
#remove line what contain
grep -rl 'pattern' public_html/ |xargs sed -i '/pattern/d'

deviousway

 /etc/sysconfig/network-scripts/ifcfg-enp2s0
IPV6INIT=no
BOOTPROTO=static
DEVICE=enp2s0
ONBOOT=yes
UUID="ccea7d4f-855b-496e-945b-da7fe543b725"
IPADDR=104.193.150.10
NETMASK=255.255.255.248
GATEWAY=104.193.150.9