exec/bkgpslog

   1 #!/bin/bash
   2
   3 # Date: 2020-03-30T02:13Z
   4 # Author: Steven Baltakatei Sandoval
   5
   6 #== Variable Initialization ==
   7
   8 #== Global constants ==
   9 PATH="/usr/local/bin/:$PATH"    # Add default OpenTimestamps path to PATH (necessary if cron used to call this script)
  10 PATH="/opt/bktei:$PATH"         # Add default baltakatei script install directory to PATH (necessary for other bk scripts)
  11 SCRIPT_HOSTNAME=$(hostname)     # Save hostname of system running this script.
  12 SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script.
  13 SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format.
  14 SCRIPT_DATE_SHORT="$(date +%Y%m%d)"          # Save current date in ISO-8601 format.
  15 #DIROUT1="/home/pi/Sync/Evanescent_Location"  # Define output directory.
  16
  17 #== Function Definitions ==
  18 echoerr() {
  19     echo "$@" 1>&2; # Define stderr echo function.
  20 } # Define stderr message function.
  21 showUsage() {
  22     echoerr "USAGE:"
  23     echoerr "    bkgpslog.sh [ options ]"
  24     echoerr
  25     echoerr "OPTIONS:"
  26     echoerr "    -h, --help"
  27     echoerr "            Display help information."
  28     echoerr
  29     echoerr "    --version"
  30     echoerr "            Display script version."
  31     echoerr
  32     echoerr "    -v, --verbose"
  33     echoerr "            Display debugging info."
  34     echoerr
  35     echoerr "    -o, --output [ directory ]"
  36     echoerr "            Specify output directory to save logs."
  37 } # Display information on how to use this script.
  38 showVersion() {
  39     echoerr "$SCRIPT_VERSION"
  40 } # Display script version.
  41 vbm() {
  42     if [ $OPTION_VERBOSE -eq "true" ]; then
  43         echoerr "$@"
  44     fi
  45 } # Verbose message display function.
  46 processArguments() {
  47     while [ ! $# -eq 0 ]; do   # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
  48         echoerr "DEBUG:Starting processArguments while loop."
  49         echoerr "DEBUG:Provided arguments are:""$@"
  50         case "$1" in
  51             --h | --help) showUsage; exit 1;; # Display usage.
  52             --version) showVersion; exit 1;; # Show version
  53             --v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
  54             --o | --output) if [ -d "$2" ]; then DIROUT1="$2"; fi ;; # Define output directory.
  55             *) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options.
  56         esac
  57         shift
  58     done
  59 } # Argument Processing
  60 checkExecutables() {
  61
  62 } # Check that certain executables exist.
  63
  64 main() {
  65     processArguments # Process arguments.
  66     checkExecutables "gpspipe" # Confirm that executables necessary to run are available.
  67 } # Main function.
  68
  69
  70
  71
  72
  73
  74 if [[ -d "$DIROUT1" ]] && command -v "gpspipe" 1>/dev/null 2>/dev/null ; then
  75     while true; do
  76         #echoerr "DEBUG:Starting while loop."
  77         # Update time constants
  78         TIME_CURRENT="$(date --iso-8601=seconds)" ;
  79         #echoerr "DEBUG:TIME_CURRENT is:""$TIME_CURRENT" ;
  80         TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"
  81         #echoerr "DEBUG:TIME_CURRENT_SHORT is""$TIME_CURRENT_SHORT"
  82         DATE_CURRENT="$(date -d "$TIME_CURRENT" --iso-8601=date)" ;
  83         #echoerr "DEBUG:DATE_CURRENT is:""$DATE_CURRENT" ;
  84         DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)" ;
  85         #echoerr "DEBUG:DATE_CURRENT is:""$DATE_CURRENT_SHORT" ;
  86         DATE_TOMORROW="$(date -d "$TIME_CURRENT next day" --iso-8601=date)" ;
  87         #echoerr "DEBUG:DATE_TOMORROW is:""$DATE_TOMORROW" ;
  88         TIME_NEXT_MIDNIGHT="$(date -d "$DATE_TOMORROW" --iso-8601=seconds)" ;
  89         #echoerr "DEBUG:TIME_NEXT_MIDNIGHT is:""$TIME_NEXT_MIDNIGHT" ;
  90         SECONDS_UNTIL_NEXT_MIDNIGHT="$((  $(date +%s -d "$TIME_NEXT_MIDNIGHT") - $(date +%s -d "$TIME_CURRENT")  ))" ;
  91         #echoerr "DEBUG:SECONDS_UNTIL_NEXT_MIDNIGHT is:""$SECONDS_UNTIL_NEXT_MIDNIGHT" ;
  92         if [ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -eq 0 ]; then echoerr "WARNING:Is it exactly midnight?" ; continue; fi ; # Exit loop early if equal to 0 because "timeout 0s" never ends.
  93         if [ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -lt 0 ]; then echoerr "ERROR:Time until midnight error." ; exit 1; fi ; # Exit script if equal to 0 because "timeout 0s" never ends.
  94
  95         # Update output file names.
  96         DIROUTN="$DIROUT1" ;
  97         FILEOUTN="$DATE_CURRENT_SHORT""..""$(hostname)""_location.nmea" ;
  98
  99         # Append location log until midnight.
 100         timeout "$SECONDS_UNTIL_NEXT_MIDNIGHT""s" gpspipe -r 1>> "$DIROUTN"/"$FILEOUTN" 2>>/dev/null ; # log raw nmea data
 101     done
 102
 103     #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ;
 104
 105 else
 106     echo "$SCRIPT_TIME_SHORT"">gpspipe or $DIROUT1 not found." >> ~/"$SCRIPT_DATE_SHORT"..error.log ;
 107 fi