General Information

Local
Variables
g1=this is global variable
l1=this is local variable
counter=2
[admin@MikroTik] >
for - this action takes one argument, the name of the loop variable. It has also four parameters,
from, to, step and do. First two parameters indicate the borders for the loop counter. The interval
includes these two values as well. The third one specifies the step of decrement (or increment).
And, finally, the do statement holds console commands to repeat.
[admin@MikroTik] > :for i from=1 to=100 step=37 do={:put ($i . " - " . 1000/$i)}
1 - 1000
38 - 26
75 - 13
[admin@MikroTik] >
foreach - this action takes one argument, the name of the loop variable. It has also two parameters,
in and do. The in argument is treated as a list with each value assigned to the loop variable, and do
statement executed for this value. If in value is not a list then do statement is executed only once. in
case in value is empty, do statement is not executed at all. This way it is optimized to work with
find command, which returns lists of internal numbers, and may return an empty list or just one
internal number. This example prints all ethernet interfaces, each followed by all addresses that are
assigned to it:
[admin@MikroTik] > :foreach i in=[/interface find type=ether ] do={
{... :put [/interface get $i name]
{... :foreach j in=[/ip address find interface=$i] do={
{{... :put [/ip address get $j address]
{{... }
{... }
ether1
ether2
10.0.0.65/24
[admin@MikroTik] >
if - this action takes one argument, a logical condition, id est an expression which must return a
boolean value. It has also two parameters, do and else. If the logical condition is evaluated to true
then the part after the do parameter is executed, otherwise the else part takes place. Note, that else
part is optional.
[admin@MikroTik] > :if (yes) do={:put yes} else={:put no}
true
[admin@MikroTik] > :if ([/ping 10.0.0.1 count=1] = 0) do {:put "gw unreachable"}
10.0.0.1 pong timeout
1 packets transmitted, 0 packets received, 100% packet loss
gw
unreachable
[admin@MikroTik] >
log - this action adds an entry to the system logs. It has two parameters, message which contains the
string needed to be added and facility which, in turn, specifies by which logging facility the
message should be logged. The facility parameter defaults to System-Info
[admin@MikroTik] > :log facility=Firewall-Log message="Very Good \
\... Thing happened. We have received our first packet!"
[admin@MikroTik] >
put - this action takes one argument, which it echoes to console.
resolve - this action takes one argument, a DNS name and resolves it to the IP address of the host.
You have to configure DNS settings on the router (/ip dns submenu) prior to using this action.
[admin@MikroTik] ip route> /ip dns set primary-dns=159.148.60.2
[admin@MikroTik] ip route> :put [:resolve www.example.com]
192.0.34.166
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