diff --git a/pages/linux/zenity.md b/pages/linux/zenity.md
index a2ef6ae97..96d1419c7 100644
--- a/pages/linux/zenity.md
+++ b/pages/linux/zenity.md
@@ -2,6 +2,7 @@
 
 > Display dialogs from the command-line/shell scripts.
 > Return user-inserted values or 1 if error.
+> More information: <https://manned.org/zenity>.
 
 - Display the default question dialog:
 
diff --git a/pages/linux/zgrep.md b/pages/linux/zgrep.md
index 72b5dee8e..143964054 100644
--- a/pages/linux/zgrep.md
+++ b/pages/linux/zgrep.md
@@ -1,6 +1,7 @@
 # zgrep
 
 > Grep text patterns from files within compressed file (equivalent to grep -Z).
+> More information: <https://manned.org/zgrep>.
 
 - Grep a pattern in a compressed file (case-sensitive):
 
diff --git a/pages/linux/zramctl.md b/pages/linux/zramctl.md
index 7de59546f..c63f41eec 100644
--- a/pages/linux/zramctl.md
+++ b/pages/linux/zramctl.md
@@ -2,6 +2,7 @@
 
 > Setup and control zram devices.
 > Use `mkfs` or `mkswap` to format zram devices to partitions.
+> More information: <https://manned.org/zramctl>.
 
 - Check if zram is enabled: