Response times with curl
Let's create uptime
file with follow content
#!/usr/bin/env bash
format=$(cat <<EOF
---------------------------------------------
Uptime of $@ is
---------------------------------------------
time_namelookup: %{time_namelookup}s
time_connect: %{time_connect}s
time_appconnect: %{time_appconnect}s
time_pretransfer: %{time_pretransfer}s
time_redirect: %{time_redirect}s
time_starttransfer: %{time_starttransfer}s
---------------------------------------------
time_total: %{time_total}s
EOF
)
curl -w "$format" -o /dev/null -s "$@"
Then you can run:
$ uptime https://www.google.com
And you get following results:
---------------------------------------------
Uptime of https://www.google.com is
---------------------------------------------
time_namelookup: 0.021137s
time_connect: 0.033610s
time_appconnect: 0.064180s
time_pretransfer: 0.064246s
time_redirect: 0.000000s
time_starttransfer: 0.134371s
---------------------------------------------
time_total: 0.136121s
Format can be also loded from file
curl -w "@format.txt" -o /dev/null -s https://www.google.com
Source: StackOverflow