Service shell scripts

A collection of shell scripts for various every day routines and monitoring operations.

hosts_con_check.sh
send_msg_telegram.sh
rand_pass_gen.sh
prime_factors.sh
dec_to_bin.sh
bin_to_dec.sh
greatest_common_divisor.sh
least_common_multiple.sh
prime_numbers.sh

hosts_con_check.sh

continuously check connection to each host from array of hosts, log data and send corresponding messages to Telegram.

TODO

• Validity check for IPv4 dot-decimal IP addresses
• Stand alone options parser
• Check whether port on remote host still open

send_msg_telegram.sh

send a message with optional content via your own Telegram bot (use your credits).

rand_pass_gen.sh

generate random passphrase with minimun one lowercase, one uppercase, and one digit characters with default length of 8 characters or user defined between length between 6 or 30 characters.

TODO

• add special characters to string generator
• add help
• add argument parser to parse -h or --help as command to pring help

prime_factors.sh

represent entered number as a product of prime numbers, up to the order of factors.

dec_to_bin.sh

convert decimal number to binary

bin_to_dec.sh

convert binary number to decimal

greatest_common_divisor.sh

find greatest common divisor of two positive numbers

least_common_multiple.sh

find least common multiple of two positive numbers

prime_numbers.sh

find sequence of prime numbers from 2 up to entered number with Sieve of Eratosthenes algorithm