clarify ps(1) fallback of `podman top`

Podman top falls back to executing ps(1) inside the container in the
presence of ps-specific flags.  Clarify that a bit more to help users
resolve issues when, for instance, ps(1) isn't installed in the
container.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

2 files changed, 4 insertions, 6 deletions

diff --git a/cmd/podman/containers/top.go b/cmd/podman/containers/top.go
index 3eb6d2af2..f00b1dce1 100644
--- a/cmd/podman/containers/top.go
+++ b/cmd/podman/containers/top.go
@@ -18,12 +18,10 @@ import (
 )
 
 var (
-	topDescription = `Similar to system "top" command.
-
-  Specify format descriptors to alter the output.
-
-  Running "podman top -l pid pcpu seccomp" will print the process ID, the CPU percentage and the seccomp mode of each process of the latest container.`
+	topDescription = `Display the running processes of a container.
 
+  The top command extends the ps(1) compatible AIX descriptors with container-specific ones as shown below.  In the presence of ps(1) specific flags (e.g, -eo), Podman will execute ps(1) inside the container.
+`
 	topOptions = entities.TopOptions{}
 
 	topCommand = &cobra.Command{
diff --git a/docs/source/markdown/podman-top.1.md b/docs/source/markdown/podman-top.1.md
index f307f96da..cfb89567c 100644
--- a/docs/source/markdown/podman-top.1.md
+++ b/docs/source/markdown/podman-top.1.md
@@ -9,7 +9,7 @@ podman\-top - Display the running processes of a container
 **podman container top** [*options*] *container* [*format-descriptors*]
 
 ## DESCRIPTION
-Display the running processes of the container. The *format-descriptors* are ps (1) compatible AIX format descriptors but extended to print additional information, such as the seccomp mode or the effective capabilities of a given process. The descriptors can either be passed as separated arguments or as a single comma-separated argument. Note that you can also specify options and or flags of ps(1); in this case, Podman will fallback to executing ps with the specified arguments and flags in the container.
+Display the running processes of the container. The *format-descriptors* are ps (1) compatible AIX format descriptors but extended to print additional information, such as the seccomp mode or the effective capabilities of a given process. The descriptors can either be passed as separated arguments or as a single comma-separated argument. Note that you can also specify options and or flags of ps(1); in this case, Podman will fallback to executing ps with the specified arguments and flags in the container.  Please use the "h*" descriptors if you want to extract host-related information.  For instance, `podman top $name hpid huser` to display the PID and user of the processes in the host context.
 
 ## OPTIONS