Update cheatsheets

osx/ping

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+---
+syntax: markdown
+tags: [tldr, osx]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ping
+
+> Send ICMP ECHO_REQUEST packets to network hosts.
+> More information: <https://keith.github.io/xcode-man-pages/ping.8.html>.
+
+- Ping the specified host:
+
+`ping "{{hostname}}"`
+
+- Ping a host a specific number of times:
+
+`ping -c {{count}} "{{host}}"`
+
+- Ping `host`, specifying the interval in `seconds` between requests (default is 1 second):
+
+`ping -i {{seconds}} "{{host}}"`
+
+- Ping `host` without trying to lookup symbolic names for addresses:
+
+`ping -n "{{host}}"`
+
+- Ping `host` and ring the bell when a packet is received (if your terminal supports it):
+
+`ping -a "{{host}}"`
+
+- Ping `host` and prints the time a packet was received (this option is an Apple addition):
+
+`ping --apple-time "{{host}}"`