while true; do echo $i; i=$[$i +1] usleep 1000; (( i++ )); done
bash script every milisecond
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Monthly Archives: October 2015
postfix delete queue by sender
postqueue -p | tail -n +2 | awk 'BEGIN { RS = "" } /@example\.com/ { print $1 }' | tr -d '*!' | postsuper -d -
postqueue -p | tail -n +2 | awk 'BEGIN { RS = "" } /username@example\.com/ { print $1 }' | tr -d '*!' | postsuper -d -
Connection attempt failed with “EAI_NODATA – No address associated with nodename
If you are getting this FTPP client error, you should check if ftp.your_domain.com exists.
exim gmail-smtp-in.l.google.com Address family not supported by protocol
vi /etc/exim.conf
disable_ipv6=true
linux generate uuid
uuidgen
[Errno 14] PYCURL ERROR 22 – “The requested URL returned error: 404 Not Found”
[Errno 14] PYCURL ERROR 22 – “The requested URL returned error: 404 Not Found”
yum clean all
yum Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again
vi /etc/yum.repos.d/epel.repo
replace https to http
exim set different port
daemon_smtp_ports = 25 : 587
service exim restart
ubuntu Missing privilege separation directory: /var/run/sshd
start-stop-daemon –start –pidfile /var/run/sshd.pid –exec /usr/sbin/sshd — -p 22
If error like missing privilege separation directory: /var/run/sshd
mkdir /var/run/sshd
chmod 0755 /var/run/sshd
iptables redirect outgoing traffic to local port
iptables -t nat -A OUTPUT -p tcp –dport 80 -j DNAT –to-destination IP:80
linux kill screen
screen -X -S [session # you want to kill] quit
postfix delete queue message
postsuper -d mailID
screen connect to attached
screen -D -r ‘1234.somescreensession’
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