From: Scott Worley <scottworley@scottworley.com>
Date: Sat, 22 Aug 2026 16:01:48 +0000 (-0700)
Subject: daily-gaps.sh script
X-Git-Url: http://git.scottworley.com/keystroke-timestamps/commitdiff_plain/3a0e7102aa2af9635c86950babc72438593b65fc?ds=sidebyside;hp=2ecebf75f7fd4624e55958b9892d370b36fab220

daily-gaps.sh script
---

diff --git a/Changelog b/Changelog
index c6c8f65..ca9fbbd 100644
--- a/Changelog
+++ b/Changelog
@@ -1,5 +1,6 @@
 ## [Unreleased]
 - More portable shebangs
+- Demo daily-gaps.sh script
 
 
 ## [1.1.0] - 2026-08-21
diff --git a/daily-gaps.sh b/daily-gaps.sh
new file mode 100755
index 0000000..090fe6f
--- /dev/null
+++ b/daily-gaps.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+set -e
+
+# Report gaps that contain the target time
+
+target=${1:-3:30}
+threshold=${2:-3600}
+LOGFILE="${3:-$HOME/keystroke-timestamps.log}"
+
+awk -vtarget="$(date -d "$target" '+%H %M %S')" -vthreshold="$threshold" -vtime_fmt="%F %T" '
+  function first_target_after(t) {
+    # TODO: Be smarter for targets near DST changes.  :(
+    target_on_t_day = mktime(strftime("%Y %m %d ", t) target)
+    target_on_prev_day = mktime(strftime("%Y %m %d ", target_on_t_day - 86400) target)
+    target_on_next_day = mktime(strftime("%Y %m %d ", target_on_t_day + 86400) target)
+    if (target_on_prev_day > t) { return target_on_prev_day }
+    if (target_on_t_day    > t) { return target_on_t_day    }
+    return target_on_next_day
+  }
+  $1 <= 67767976233561595 {
+    if (prev && $1 - prev > threshold && $1 > first_target_after(prev)) {
+      print(strftime(time_fmt, prev), "to", strftime(time_fmt, $1), "was", $1 - prev)
+    }
+    prev = $1
+  }' "$LOGFILE"
diff --git a/gaps.sh b/gaps.sh
index 7f8de73..e2144e1 100755
--- a/gaps.sh
+++ b/gaps.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 threshold=${1:-3600}
 LOGFILE="${2:-$HOME/keystroke-timestamps.log}"