# shell exporter Shell scripts can now query Netdata: ```sh eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')" ``` after this command, all the Netdata metrics are exposed to shell. Check: ```sh # source the metrics eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')" # let's see if there are variables exposed by Netdata for system.cpu set | grep "^NETDATA_SYSTEM_CPU" NETDATA_SYSTEM_CPU_GUEST=0 NETDATA_SYSTEM_CPU_GUEST_NICE=0 NETDATA_SYSTEM_CPU_IDLE=95 NETDATA_SYSTEM_CPU_IOWAIT=0 NETDATA_SYSTEM_CPU_IRQ=0 NETDATA_SYSTEM_CPU_NICE=0 NETDATA_SYSTEM_CPU_SOFTIRQ=0 NETDATA_SYSTEM_CPU_STEAL=0 NETDATA_SYSTEM_CPU_SYSTEM=1 NETDATA_SYSTEM_CPU_USER=4 NETDATA_SYSTEM_CPU_VISIBLETOTAL=5 # let's see the total cpu utilization of the system echo ${NETDATA_SYSTEM_CPU_VISIBLETOTAL} 5 # what about alarms? set | grep "^NETDATA_ALARM_SYSTEM_SWAP_" NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_STATUS=CLEAR NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_VALUE=51 # let's get the current status of the alarm 'used swap' echo ${NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_STATUS} CLEAR # is it fast? time curl -s 'http://localhost:19999/api/v1/allmetrics' >/dev/null real 0m0,070s user 0m0,000s sys 0m0,007s # it is... # 0.07 seconds for curl to be loaded, connect to Netdata and fetch the response back... ``` The `_VISIBLETOTAL` variable sums up all the dimensions of each chart. The format of the variables is: ```sh NETDATA_${chart_id^^}_${dimension_id^^}="${value}" ``` The value is rounded to the closest integer, since shell script cannot process decimal numbers. [](<>)