1 files changed, 20 insertions, 0 deletions

diff --git a/bin/unix/stopwatch.sh b/bin/unix/stopwatch.sh
new file mode 100755
index 0000000..70f6b0c
--- /dev/null
+++ b/bin/unix/stopwatch.sh
@@ -0,0 +1,20 @@
+#! /bin/bash
+# Ref: https://superuser.com/questions/611538/611582#611582
+
+tput civis
+read -p '? ' input
+
+[[ "$input" =~ s && ! "$input" =~ sec  ]] && input="$(sed s/s/sec/  <<<"$input")"
+[[ "$input" =~ m && ! "$input" =~ min  ]] && input="$(sed s/m/min/  <<<"$input")"
+[[ "$input" =~ h && ! "$input" =~ hour ]] && input="$(sed s/h/hour/ <<<"$input")"
+
+time=0
+start=$(date +%s)
+given=$(date +%s -d "$input")
+stop=$(( $given - $start ))
+while [ $time -ne $stop ]; do
+    time="$(( $(date +%s) - $start ))"
+    printf '%s\r' "$(date -u -d "@$time" +%H:%M:%S)"
+    sleep 0.3
+done
+printf "\e[1;31m$(date -u -d "@$time" +%H:%M:%S)"