diff --git a/pages/common/sed.md b/pages/common/sed.md
index f62e10d58e..009e91e7da 100644
--- a/pages/common/sed.md
+++ b/pages/common/sed.md
@@ -2,18 +2,18 @@
 
 > Run replacements based on regular expressions.
 
-- Replace all occurrences of a string in a file, and print the result:
+- replace the first occurrence of a string in a file, and print the result
 
-`sed 's/{{find}}/{{replace}}/g' {{filename}}`
+`sed 's/{{find}}/{{replace}}/' {{filename}}`
 
-- Replace all occurrences of a string in a file, and overwrite the file contents:
+- replace all occurrences of a string in a file, overwriting the file (i.e. in-place)
 
 `sed -i 's/{{find}}/{{replace}}/g' {{filename}}`
 
 - Replace all occurrences of an extended regular expression in a file:
 
-`sed -E 's/{{regex}}/{{replace}}/g' {{filename}}`
+`sed -r 's/{{regex}}/{{replace}}/g' {{filename}}`
 
-- Replace all occurrences of multiple strings in a file:
+- apply multiple find-replace expressions to a file
 
-`sed -e 's/{{find}}/{{replace}}/g' -e 's/{{find}}/{{replace}}/g' {{filename}}`
+`sed -e 's/{{find}}/{{replace}}/' -e 's/{{find}}/{{replace}}/' {{filename}}`