Initial commit.

LICENSE

@@ -1,6 +1,6 @@
 MIT No Attribution
 
-Copyright <YEAR> <COPYRIGHT HOLDER>
+Copyright 2021, Mid Favila
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this
 software and associated documentation files (the "Software"), to deal in the Software

Links

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+export CONFIG_DIR=".config"
+
+if  [ ! -e /tmp/Links.xid ]
+then /usr/bin/tabbed -t '#000000' -T '#FFFFFF' -u '#C0C0C0' -U '#000000' -c /usr/bin/links "$@" -g -w > /tmp/Links.xid ; rm /tmp/Links.xid
+else /usr/bin/links "$@" -g -w "$(cat /tmp/Links.xid)"
+fi

README.md

@@ -1,3 +1,15 @@
 # POSIX_Scripts
 
 A set of POSIX* shell scripts designed for personal use. No guarantees when it comes to quality, as these are also used for various minor experiments of mine.
+
+Links - wrapper script for managing links2 and tabbed
+fpm - wrapper for using ffplay to manage music
+fpv - the above, but video
+gasutc - "Get and Set UTC" over HTTPS using ncat
+gcl - one-liner to g(it)cl(one)
+iview - simple wrapper for sxiv; auto-sizes based on image dimensions
+ls - one-liner to pipe ls through cols
+man - short script to auto-resize mandoc output
+modem-manager - used to manage laptop PCIe WAN modems. rather dense
+netsh - an old experiment that serves as a simple TUI for managing network interfaces... and an example of how not to use AWK
+plumber - one of my more sophisticated scripts; plumber creates pipes between programs based on what sort of input it receives, and handles errors (somewhat) intelligently

fpm

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+# Grab a number that is greater than zero but no greater than the number of
+# files in our directory
+rand_file()
+{
+   x=$(($(/usr/bin/dd bs=2 count=1 if=/dev/random of=/dev/stdout| /usr/bin/od -|\
+   /usr/bin/sed 's/  */ /'|/usr/bin/cut -d ' ' -f2|/usr/bin/sed 1!d)%$((1+$(/usr/bin/ls|\
+   /usr/bin/wc -l)))))
+   /usr/bin/echo "${x}"
+}
+
+if [ $# = 0 ]
+   then /usr/bin/printf "FPM provides a convenient way to use ffplay for audio playback.\nIt accepts the following arguments:\n\n-s: Shuffle songs in the directory randomly.\n\n-l: Play on repeat.\n\n"
+   else
+case "$@" in
+
+-s)
+      file=$(x=$(rand_file);if [ "${x}" = 0 ];then x=1;fi;/usr/bin/ls|sed "${x}"!d)
+      /usr/bin/ffplay -autoexit -nodisp "${file}"
+      sleep 1 # Prevent fpm from continuously respawning on kill
+
+;;
+
+-l)
+      while true
+      do /usr/bin/ffplay -autoexit -nodisp "$1"
+      done
+;;
+
+
+*)
+   /usr/bin/ffplay -autoexit -nodisp "$1"
+;;
+
+esac
+fi
+exit

fpv

@@ -0,0 +1,10 @@
+#!/bin/sh -e
+
+case "$1" in
+
+*)
+   /usr/bin/ffplay -autoexit "$1"
+;;
+
+esac
+exit

gasutc

@@ -0,0 +1,38 @@
+#!/bin/sh -e
+
+# Retrieve a header from somewhere. Don't care where.
+echo "GET HTTP/1.1" | ncat --ssl 205.166.94.16 443 | grep Date > /tmp/date.jnk
+
+# Month lookup table. Horrible, but I don't know a better method...
+# Please forgive me for this sin, Patriarch Bourne.
+month=`cut -d ' ' -f 4 /tmp/date.jnk`
+case "$month" in
+Jan) month=01 ;;
+Feb) month=02 ;;
+Mar) month=03 ;;
+Apr) month=04 ;;
+May) month=05 ;;
+Jun) month=06 ;;
+Jul) month=07 ;;
+Aug) month=08 ;;
+Sep) month=09 ;;
+Oct) month=10 ;;
+Nov) month=11 ;;
+Dec) month=12 ;;
+esac
+
+x=1
+for each in day year time
+do
+  export $each=`cat /tmp/date.jnk | tr ' ' '\n' | grep -E [0-9] | sed s/\://g | tr '\n' ' ' | cut -d ' ' -f $x`
+  x=$(($x+1))
+done
+
+printf "The current time is as follows.\nYear: $year\nMonth: $month\nDay: $day\nTime: $time\n"
+
+time=`echo $time | cut -b 1,2,3,4`
+year=`echo $year | cut -b 3,4`
+printf "Your date-compatible string for today is: $month$day$time$year\nHere it is again, on its own line:\n$month$day$time$year\n"
+/bin/ssu -- date -u $month$day$time$year
+rm /tmp/date.jnk
+exit

gcl

@@ -0,0 +1,3 @@
+#!/bin/sh
+/usr/bin/git clone --recurse-submodules "$@"
+exit

iview

@@ -0,0 +1,22 @@
+#!/bin/sh -e
+
+type=$(file --mime-type "${1}" | cut -f 2 -d ' ')
+
+case "${type}" in
+
+*image/png*)
+    x=$(/bin/file "${1}" | /bin/grep -o "[0-9]* x [0-9]*" | sed 's/ x /x/')
+;;
+
+*image/jpeg*)
+    x=$(/bin/file "${1}" | /bin/grep -o "[0-9]*x[0-9]*" | sed "2!d")
+;;
+
+*)
+    x=$(/bin/file "${1}" | /bin/grep -o "[0-9]* x [0-9]*" | sed 's/ x /x/')
+;;
+
+esac
+
+/bin/sxiv -bg "${x}" "${1}"
+exit

ls

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+/usr/bin/ls "$@" | /usr/bin/cols
+exit

man

@@ -0,0 +1,4 @@
+#!/bin/sh
+x=$(/usr/bin/tput cols)
+/usr/bin/man -O width=$((x-2)) "${@}"
+exit

modem-manager

@@ -0,0 +1,64 @@
+#!/bin/sh
+
+# We need root to configure interface properties.
+if [ "${USER}" != root ]
+   then printf "We need root!\n"
+   exit
+   else
+
+# Has the interface even been initialized? If not, do so.
+   while [ ! -e /dev/cdc-wdm0 ]
+      do printf  "3\n" >> /sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/bConfigurationValue
+   done
+
+# Get the name of our interface.
+   wif=$(ifconfig -l | tr ' ' '\n' | grep ww)
+
+# Establish a link, but only if one is not already available.
+   if [ -e /tmp/mbim-network-state-cdc-wdm0 ]
+      then printf "Connection already established.\nBringing down...\n"
+      printf "Closing netlink...\n"
+      mbim-network /dev/cdc-wdm0 stop >> /dev/null
+      printf "Bringing down interface...\n\n"
+      ifconfig "${wif}" down >> /dev/null
+      exit
+   else printf "Turning on radio...\n"
+      mbimcli --device=/dev/cdc-wdm0 --device-open-proxy --set-radio-state=on >> /dev/null
+      printf "Bringing up interface...\n"
+      ifconfig "${wif}" up >> /dev/null
+      printf "Opening netlink...\n\n"
+      mbim-network /dev/cdc-wdm0 start >> /dev/null
+   fi
+
+# Store the result of the query so that we don't have to call it constantly
+   printf "Querying for network info...\n"
+   mbimcli -d /dev/cdc-wdm0 -p --query-ip-configuration > /tmp/qic.tmp
+
+# Get our IPv4.
+   ip=$(sed -ne "s/IP \[0\]\: '\([0-9]*\.[0-9]*\.[0-9]*\.[0-9]*\/[0-9][0-9]\)'/\1/p" /tmp/qic.tmp | sed 's/ //g' | cut -d '/' -f 1)
+
+# Get our CIDR netmask and convert to decimal.
+   nm=255.255.255.$(((0xFFFFFFFF >> $(sed -ne "s/IP \[0\]\: '\([0-9]*\.[0-9]*\.[0-9]*\.[0-9]*\/[0-9][0-9]\)'/\1/p" /tmp/qic.tmp | sed 's/ //g' | cut -d '/' -f 2)) ^ 0xFF))
+
+# Get our gateway.
+   gw=$(sed -ne "s/Gateway: '\([0-9]*\.[0-9]*\.[0-9]*\.[0-9]*\)'/\1/p" /tmp/qic.tmp|sed 's/ //g')
+
+
+# Get our MTU.
+   mtu=$(sed 7!d /tmp/qic.tmp | sed -ne "s/MTU: '\([0-9]*\)'/\1/p" | sed -ne 's/ //gp')
+
+   printf "IP is %s\nNM is %s\nGW is %s\nMTU is %s\n\n" "${ip}" "${nm}" "${gw}" "${mtu}"
+
+# Actually set up the connection.
+   printf "Assigning interface details...\n"
+   ifconfig "${wif}" "${ip}" netmask "${nm}"
+   printf "Routing through cellular gateway...\n"
+   route add default gw "${gw}"
+
+# Test connection.
+   printf "Testing interface.\n\n"
+   ping -c 4 sdf.org
+   printf "\n"
+   rm /tmp/qic.tmp
+fi
+exit

netsh

@@ -0,0 +1,59 @@
+#!/usr/bin/env sh
+#This is a poorly-written script and should be ignored.
+
+
+printf "\nWhat do you want to do?\n1. Configure\n2. Scan\n3. View\n>: "
+
+read choice
+
+case $choice in
+
+1)
+    printf "Not ready yet.\n"
+;;
+
+2)
+    printf "\nScan with which interface?\n"
+    ifconfig -l | tr ' ' '\n' | grep wl | nl | awk '{printf $1 ". " $2 "\n"}'
+    printf ">: "
+    read choice
+    dev=`ifconfig -l | tr ' ' '\n' | grep wl | sed $choice!d`
+    iw dev $dev scan | grep SSID | $PAGER
+;;
+
+3)
+
+    printf "\nView what?\n1. Interface information\n2. Routing table\n>: "
+    read choice
+        case $choice in
+        1)
+
+            x=1
+            i=$((`ifconfig -l | tr ' ' '\n' | wc -l`+1))
+            printf "\nWhich interface?\n"
+            while [ $x -lt $i ]
+               do ifconfig -l | tr ' ' '\n' | nl | sed $x!d | awk '{printf $1 ". " $2 "\n"}'
+               x=$(($x+1))
+            done
+            printf ">: "
+            read choice
+            printf "\n" ; ifconfig -l | tr ' ' '\n' |  sed $choice!d | awk '{printf  "ifconfig " $1 "\n"}' | sh -e --
+
+        ;;
+
+        2)
+            printf "\n" ; route ; printf "\n"
+        ;;
+
+        *)
+            printf "Illegal input. Aborting.\n"
+        ;;
+        esac
+;;
+
+*)
+    printf "Illegal input. Aborting.\n"
+;;
+
+esac
+exit

plumber

@@ -0,0 +1,41 @@
+#!/bin/sh -e
+
+rand_inst() # Choose a random invidious instance to distribute load.
+            # Good digital citizenship is important, you know.
+{
+   case $(($(dd bs=2 count=1 if=/dev/random of=/dev/stdout | od - | \
+          sed -ne 's/  */ /gp' | cut -d ' ' -f2) % 3)) in
+     0) printf "vid.puffyan.us" ;;
+     1) printf "ytprivate.com" ;;
+     2) printf "yewtu.be" ;;
+   esac
+}
+
+if [ "$(printf "%s" "${1}"|cut -b 1,2,3,4)" = "http" ]
+then
+   case "${1}" in
+      *youtu*) exec Links "$(printf "%s" "${1}"|sed -ne \
+                           "s/\(http.*:\/\/\).*\(\/.*\)/\1$(rand_inst)\2/p")" & ;;
+      *reddit*) exec Links "$(printf "%s" "${1}"|sed -ne \
+                           "s/\(http.*:\/\/\).*\(\/.*\/\)/\1libredd.it\2/p")" & ;;
+      https://4chan.org*) exec Links "$(printf "%s" "${1}"|sed -ne \
+                              "s/4chan/4channel/p")" ;;
+      *) exec Links "${1}" & ;;
+   esac
+
+else
+
+   mime=$(file --mime-type -b "${1}")
+
+   case ${mime} in
+      *html*) exec Links "${1}" &  ;;
+      text*)  exec xless "${1}" &  ;;
+      video*) exec fpv   "${1}" &  ;;
+      audio*) exec fpm   "${1}" &  ;;
+      image*) exec iview "${1}" &  ;;
+      *pdf)   exec gv    "${1}" &  ;;
+      *) printf "Plumber ran into an edge case with the following string/mime\n%s"\
+         "${1}"|xmessage -file - & ;;
+   esac
+fi
+exit