feat(user/bkots):Optimize with GNU Parallel for executing commands

[BK-2020-03.git] / unitproc / bktemp-timeUntilNextHour

diff --git a/unitproc/bktemp-timeUntilNextHour b/unitproc/bktemp-timeUntilNextHour
index 9cb6360e47c76ca677cb320d964ed6e959ca31a5..6b56424bfeff32861aaee01852497bb06c1d91fd 100644 (file)
--- a/unitproc/bktemp-timeUntilNextHour
+++ b/unitproc/bktemp-timeUntilNextHour
@@ -1,6 +1,5 @@
 #!/bin/bash
 # Desc: Template to report seconds until beginning of next hour
-# Author: Steven Baltaktei Sandoval; License: GPLv3+
 
 #==BEGIN Define script parameters==
 #===BEGIN Declare local script functions===
@@ -9,35 +8,37 @@ die() { yell "$*"; exit 111; }
 try() { "$@" || die "cannot $*"; }
 timeUntilNextHour(){
     # Desc: Report seconds until next hour
+    # Version 1.0.1
     # Output: stdout: integer seconds until next hour
     # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
     # Usage: timeUntilNextHour
     # Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi
-    local returnState TIME_CURRENT TIME_NEXT_HOUR SECONDS_UNTIL_NEXT_HOUR
-    TIME_CURRENT="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second.
-    TIME_NEXT_HOUR="$(date -d "$TIME_CURRENT next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second.
-    SECONDS_UNTIL_NEXT_HOUR="$(( $(date +%s -d "$TIME_NEXT_HOUR") - $(date +%s -d "$TIME_CURRENT") ))"; # Calculate seconds until closest future midnight (res. 1 second).
-    if [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then
+    
+    local returnState timeCurrent timeNextHour secondsUntilNextHour
+    timeCurrent="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second.
+    timeNextHour="$(date -d "$timeCurrent next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second.
+    secondsUntilNextHour="$(( $(date +%s -d "$timeNextHour") - $(date +%s -d "$timeCurrent") ))"; # Calculate seconds until next hour (res. 1 second).
+    if [[ "$secondsUntilNextHour" -gt 0 ]]; then
        returnState="true";
-    elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then
-       returnState="WARNING_ZERO";
+    elif [[ "$secondsUntilNextHour" -eq 0 ]]; then
+       returnState="warning_zero";
        yell "WARNING:Reported time until next hour exactly zero.";
-    elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then
-       returnState="WARNING_NEGATIVE";
+    elif [[ "$secondsUntilNextHour" -lt 0 ]]; then
+       returnState="warning_negative";
        yell "WARNING:Reported time until next hour is negative.";
-    fi
+    fi;
 
-    try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report
+    try echo "$secondsUntilNextHour"; # Report
     
-    #===Determine function return code===
+    # Determine function return code
     if [[ "$returnState" = "true" ]]; then
        return 0;
-    elif [[ "$returnState" = "WARNING_ZERO" ]]; then
+    elif [[ "$returnState" = "warning_zero" ]]; then
        return 1;
-    elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then
+    elif [[ "$returnState" = "warning_negative" ]]; then
        return 2;
-    fi
-} # Report seconds until next midnight
+    fi;
+} # Report seconds until next hour
 #===END Declare local script functions===
 #==END Define script parameters==
 
@@ -47,3 +48,6 @@ try echo "Time until next hour (seconds):$(timeUntilNextHour)" # simple report
 
 if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement for myTTL:$myTTL"; exit 1; fi # Use of exit code to exit early if time <= 0.
 #==END sample code==
+
+# Author: Steven Baltaktei Sandoval
+# License: GPLv3+