1 files changed, 30 insertions, 0 deletions
diff --git a/src/bin/elapsedtime.c b/src/bin/elapsedtime.c
new file mode 100644
index 0000000..42c2b5e
--- /dev/null
+++ b/src/bin/elapsedtime.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc,char *argv[]) {
+  char c;//comma?
+  long long ll;
+  short s=0;
+  if(argc < 2) {
+    printf("usage: elapsedtime [-s|--short] seconds\n");
+    return 1;
+  }
+  argv++;
+  if(!strcmp(*argv,"-s") || !strcmp(*argv,"--short")) {
+    s=1;
+    argv++;
+  }
+  char *f=strchr(*argv,'.');
+  ll=atoll(*argv);
+  if(s) {
+    printf("%lld:%lld%s\n",ll / 60 % 60,ll % 60,f?f:"");
+    return 0;
+  }
+  if(ll / 31557600      ) { if(c) printf(", ");c=1;printf("%lld year%s",  ll / 31557600,    ll / 31557600 == 1 ? "" : "s"); }
+  if(ll % 31557600 / 86400) { if(c) printf(", ");c=1;printf("%lld day%s",   ll % 31557600 / 86400, ll % 31557600 / 86400 == 1 ? "" : "s"); }
+  if(ll / 3600     %  24) { if(c) printf(", ");c=1;printf("%lld hour%s",  ll / 3600 % 24,   ll / 3600 % 24 == 1 ? "" : "s"); }
+  if(ll / 60       %  60) { if(c) printf(", ");c=1;printf("%lld minute%s",ll / 60 % 60,     ll / 60 % 60 == 1 ? "" : "s"); }
+  if(ll            %  60) { if(c) printf(", ");c=1;printf("%lld%s second%s",ll % 60,f?f:"",          ll % 60 == 1 && !f ? "" : "s"); }
+  putchar('\n');
+  return 0;
+}