Mail example. Closes #15.

readme.md

@@ -44,46 +44,71 @@ But feel free to [add a new one](#development)!
             Optional. Print binary version.
 
 
-## Example
+## Install
+
+- With [Go](https://golang.org/):
+```
+go get qvl.io/promplot
+```
+
+- With [Homebrew](http://brew.sh/):
+```
+brew install qvl/tap/promplot
+```
+
+- Download from https://github.com/qvl/promplot/releases
+
+
+## Examples
 
 It's simple to create a shell script for multiple plots:
 
+### Slack
+
 ```sh
-common="-url $promurl -channel stats -slack $slacktoken"
+common="-url $promurl -channel stats -slack $slacktoken -range 24h"
 
 promplot $common \
   -title "Free memory in MB" \
-  -query "node_memory_MemFree /1024 /1024" \
-  -range "24h"
+  -query "node_memory_MemFree /1024 /1024"
 
 promplot $common \
   -title "Free disk space in GB" \
-  -query "node_filesystem_free /1024 /1024 /1024" \
+  -query "node_filesystem_free /1024 /1024 /1024"
   -range "24h"
 
 promplot $common \
   -title "Open file descriptors" \
-  -query "process_open_fds" \
-  -range "24h"
+  -query "process_open_fds"
 ```
 
 And with a scheduler like [sleepto](https://qvl.io/sleepto) you can easily automate this script to run every day or once a week.
 
 
-## Install
+### Mailing results
 
-- With [Go](https://golang.org/):
-```
-go get qvl.io/promplot
-```
+There is no mail transport built into promplot but you can use the Linux `mail` utility instead:
 
-- With [Homebrew](http://brew.sh/):
-```
-brew install qvl/tap/promplot
-```
+```sh
+tmp="$(mktemp -d)"
+common="-url $promurl -range 24h"
 
-- Download from https://github.com/qvl/promplot/releases
+promplot $common \
+  -title "Free memory in MB" \
+  -query "node_memory_MemFree /1024 /1024" \
+  -file ${tmp}/memory.png
 
+promplot $common \
+  -title "Open file descriptors" \
+  -query "process_open_fds" \
+  -file ${tmp}/fds.png
+
+echo "Your daily report is here." | mail \
+  -s "Daily server stats" \
+  -a ${tmp}/memory.png \
+  -a ${tmp}/fds.png \
+  [email protected]
+```
 
 
 ## Development