| 1 | #!/bin/bash |
| 2 | |
| 3 | # Desc: Template to check that apps, files, or dirs exist. |
| 4 | # Author: Steven Baltaktei Sandoval |
| 5 | # License: GPLv3+ |
| 6 | |
| 7 | #==BEGIN Define script parameters== |
| 8 | #===BEGIN Declare local script functions=== |
| 9 | timeUntilMidnight(){ |
| 10 | # Desc: Report seconds until midnight |
| 11 | # Output: stdout: seconds until midnight |
| 12 | TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. |
| 13 | TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)" # Produce separator-less current timestamp with resolution 1 second. |
| 14 | DATE_CURRENT="$(date -d "$TIME_CURRENT" --iso-8601=date)" ; # Produce `date`-parsable current timestamp with resolution of 1 day. |
| 15 | DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)" ; # Produce separator-less current timestamp with resolution 1 day. |
| 16 | DATE_TOMORROW="$(date -d "$TIME_CURRENT next day" --iso-8601=date)" ; # Produce timestamp of tomorrow's date (res. 1 day). |
| 17 | TIME_NEXT_MIDNIGHT="$(date -d "$DATE_TOMORROW" --iso-8601=seconds)" ; # Produce `date`-parsable timestamp of closest future midnight (res. 1 second). |
| 18 | SECONDS_UNTIL_NEXT_MIDNIGHT="$(( $(date +%s -d "$TIME_NEXT_MIDNIGHT") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second). |
| 19 | echo "$SECONDS_UNTIL_NEXT_MIDNIGHT" 2>/dev/null; |
| 20 | } # Report seconds until next midnight |
| 21 | #===END Declare local script functions=== |
| 22 | #==END Define script parameters== |
| 23 | |
| 24 | |
| 25 | #==BEGIN sample code== |
| 26 | echo "Time until next midnight (seconds):$(timeUntilMidnight)" |
| 27 | #==END sample code== |