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Linux Platform Tricks:

  • In terminal press CTRL-R to search for previous command, pressing enter will RUN the command immediately.

  • Zipping up a folder into tar.gz tar czf behind_closed_doors.tar.gz behind_closed_doors

  • Generate passwords with pwgen

  • Kill a Process from terminal

    • Search the process via: ps aux | grep <name>
    • Kill the process via pid with, kill <pid>
    • Use kill -9 <pid> for forced kill.
    • Kill the process via: killall <name> _also use -9 for force kill.

Setup sendmail to email from command-line

NOTE: If attempting to modify this file, it does NOT auto-complete with tabs while typing out the filepath/name, just type it out anyway and you should see the contents of the file.

  1. Grab required packages and setup configuration file:
apt-get install sendmail
apt-get install ssmtp
sudo vim /etc/ssmtp/ssmtp.conf

#
# Config file for SSMTP sendmail
#
# The person who gets all mail for userids < 1000
# Make this empty to disable rewriting.
root=user@gmail.com

# The place where the mail goes. The actual machine name is required no
# MX records are consulted. Commonly mailhosts are named mail.domain.com
mailhub=smtp.gmail.com:587
AuthUser=user@gmail.com
AuthPass=passwd
UseTLS=YES
UseSTARTTLS=YES
# Where will the mail seem to come from?
#rewriteDomain=

# The full hostname
hostname=DESKTOP-G5R9HKB.localdomain

# Are users allowed to set their own From: address?
# YES - Allow the user to specify their own From: address
# NO - Use the system generated From: address
#FromLineOverride=YES
  1. Send the email: echo "Subject: Test mail" | sendmail sendto@mail.com
echo "From: Sender Name" > contents.txt
echo "Subject: Test mail" >> contents.txt
echo -e "\n\n" >> contents.txt
echo "Email body contents here." >> contents.txt
sendmail sendto@mail.com < contents.txt
  1. It may shout about unsecured access you need to go here and allow it https://myaccount.google.com/lesssecureapps