sss

This is just a collection of tools I wrote to make my life easier. Not super advanced, but together, they can be quite useful.

Structure

These utilitis are laid out in a Filesystem Hierarchy Standard (FHS) like manner, as I keep them in my home directory and add them to my path.

For my use cases, I keep a tmpfs mounted on $HOME/usr/tmp, some of my design choices make more sense when you know that.

Programs

• yesno
  • takes no arguments
  • ignores all input except
    • Returns 0 for Y or y
    • Returns 1 for N or n
• hn
  • Takes 3 arguments
    • Host name
    • Port number
    • Timeout
  • If it can connect to the server on that port inside the timout, returns true
  • Otherwise returns false
• slower
  • It's like cat
    • but slower
      • on purpose
• ip.unrange
  • Given a start and end IP, prints all IPs between
• dnslookup
  • Fast
  • Simple
  • Looks up an IP if given a name
  • Looks up a name if given an IP
• myfactor
  • Simply factors a number
  • Handy for making clean dd size= count= calculations

Scripts

• tmpfile
  • Outputs a unique file name in your $TMP directory
  • If you pass it a name as an argumnet, it will
    • make that directory in $TMP if it doesn't exist
    • include that directory in the path it outputs
    • return an error if the name exists as a file
• check.*.py
  • Reads a file in the specified format
  • Return error if file cannot be read
• clean.*.py
  • Reads a file in the specified format
  • Writes that file back out in same format
  • Good for canonicalizing data
• isip.sh
  • takes one argument, a string
  • returns true if it is a valid IPv4 addess
• oom_check.sh
  • Checks if OOM is in dmesg
• strace.py
  • Cleans up strace output
  • Still needs improvements
• myip_r53.sh
  • Creates or updates an A record in AWS Route53 based on machine's current IP
• tvi
  • Uses tmpfile to create a file and edit it
  • Passes all args through to vi, so any vi options can be used
• tmpcat
  • Uses tmpfile to create a file and cat into it
  • Uses argv1 as tmpfile name, shifts, and passes rest to cat
• qg
  • Takes argv as a commit message
  • does a git-up if installed, git pull --rebase otherwise
  • does a commit of everything outstanding in repo
  • pushes that commit on all remote
  • if -f supplied, returns true if any remote takes the push
  • if -y supplied, doesn't ask for Y/N before comitting
• ssh.find
  • Looks for the ssh agent in the places where I keep it
• ssh.start
  • Starts an ssh agent in the place whree I keep it
• ressh
  • Starts an ssh agent if one isn't running
  • Adds keys from the usual place
• wait.*
  • Waits for server names provided on the specified protocol to start responding
• wait.no*
  • Waits for server names provided on the specified protocol to sopt responding and then start responding
• flatten
  • replaces control characters with escaped control characters for use with echo -e
• se
  • Saves enviroment to file
• le
  • Sources enviroment from file
• isip
  • Takes IP, returns true if argv[1] is a string that can be interpreted as an IP
• isipv6
  • Takes IP, returns true if argv[1] is a string that can be interpreted as an IPv6
• res
  • Returns the virtual window size of the current display in X11
    • If running uneven multiple displays, this will include dead spots
    • Will be the overall size, not any individual sizes unless there is only 1 display
• cres
  • returns the text resolution of a console
• nvidia-settings.sh
  • Starts the nvidia settings proprietary app with sudo
• snapshot.imagemagik.sh
  • Uses imagemagik to take a screenshot
• pidwalk.sh
  • Walks up the PID tree to init
  • Takes one integer representing a running PID as it's only argument
  • Prints the number, name (acording to stat), executable, and command line
  • Mostly useful as a code example for difinitivley avoiding certain nesting infinite loop conditions