In this tutorial, we will look at how the cURL utility can be used to send out emails. This is useful for things like automated alerts…
read more...Sending Emails with cURL
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Generating Memorable Hostnames for a Subnet
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This is a simple Bash script I wrote to generate memorable names for an IP address space. The names are camelCase word pairs obtained by shuffling a list of the thousand most common English words. This produces readable and memorable hostnames, e.g. FormerAbility.…
read more...Send IM when site goes offline
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This tutorial will show how I used a Python script, Systemd timers, and the XMPP protocol to send myself an instant message when my website goes offline.…
read more...Lets Encrypt HTTP-01 using Amazon S3
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How to obtain Let's Encrypt certificates via an S3 bucket with optional Cloudflare origin-host configuration…
read more...Cloud based Two Factor Authentication with gpg+s3
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This is an experimental script I made to store encrypted TFA credentials in the cloud. It uses GPG to protect the the uploaded data. The tokens can be accessed anywhere on anything that has access to the GPG key.…
read more...Bash port scanner
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The script, using only Bash, will scan common ports, and if an open port is found, it will display a base64 encoded output of the servers response.…
read more...Command line Pastebin using curl
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In this post, I will demonstrate how to use the Ubuntu Pastebin utility with cURL to make pastes from the command line.…
read more...Sed Substitution Cheatsheet
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This is a comprehensive list of examples for the sed (stream editor command). This command is used to find, replace, refactor, and modify text.…
read more...Writing a port scanner in Bash shell
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A primitive port scanner can be constructed using solely the bash shell via its /dev/tcp virtual file. The script will scan common ports, and if an open port is found, it will display a base64 encoded output of the servers response.…
read more...Pretty printing terminal output into JSON/CSV
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There is a command called column which allows you to format the lines produced by a command into symmetrical rows/columns, which can then be easily converted into CSV or JSON. This will be quite handy for reading and populating files. In this case, I needed to populate /etc/ethers/ from the arp table More info on column Note: This is based on the column command in fedora linux, it may be different in other distros Creating a table This bit is simple enough, we delete unneeded fields with awk, and then use the command column -t to turn it…
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