doc/man: add notes about shell escaping

[lttng-tools.git] / doc / man / lttng-enable-event.1.txt

diff --git a/doc/man/lttng-enable-event.1.txt b/doc/man/lttng-enable-event.1.txt
index 4d88bdb1b6d37480287c796d1ba92c97942f7db6..f33507cec4685bd85f1151ae97597305ecf72827 100644 (file)
--- a/doc/man/lttng-enable-event.1.txt
+++ b/doc/man/lttng-enable-event.1.txt
@@ -180,6 +180,10 @@ when creating a new event rule. If the filter expression evaluates
 to true when executed against the dynamic values of an event's fields
 when tracing, the filtering condition passes.
 
 to true when executed against the dynamic values of an event's fields
 when tracing, the filtering condition passes.
 

+NOTE: Make sure to **single-quote** the filter expression when running
+the command from a shell, as filter expressions typically include
+characters having a special meaning for most shells.
+

 The filter expression syntax is very similar to C language conditional
 expressions (expressions that can be evaluated by an `if` statement).
 
 The filter expression syntax is very similar to C language conditional
 expressions (expressions that can be evaluated by an `if` statement).