diff --git a/notes/cli/git.scrbl b/notes/cli/git.scrbl
index 33d4ee6..ae88cf6 100644
--- a/notes/cli/git.scrbl
+++ b/notes/cli/git.scrbl
@@ -115,12 +115,9 @@
 
   # --name-status option is a parameter for `git diff` and `git log`.
   # list modified files along with the type of modification:
-  # A: The file was added.
-  # M: The file was modified.
-  # D: The file was deleted.
-  # R: The file was renamed.
-  # C: The file was copied.
-  # U: The file is unmerged. You'll see this after a merge conflict.
+  # A: / M: / D: / R: / C: / U:
+  # The file was/is Added / Modified / Deleted / Renamed / Copied / Unmerged
+  # (After a merge conflict.)
 
   # list all files changed / touched in a particular commit
   # see
diff --git a/notes/cli/linux.scrbl b/notes/cli/linux.scrbl
index 6b10e15..50e1e40 100644
--- a/notes/cli/linux.scrbl
+++ b/notes/cli/linux.scrbl
@@ -758,7 +758,7 @@
   curl --request POST -H 'Content-Type: application/json' -d '{"x":"1", "y":"2"}' URL
   curl --request POST --form variable=value URL
 
-  # :iproute2 :net - like ifconfig. State of network interfaces
+  # :iproute2 :network - like ifconfig. State of network interfaces
   ip address
   # show / manipulate routing, devices, policy routing and tunnels
   ip address show eth0
@@ -769,20 +769,20 @@
   # Address Resolution Protocol table
   ip neighbour
 
-  # :net what is my IP address
+  # :network - what is my IP address? See also https://resolve.rs/
   curl ifconfig.me
-  # See also
-  https://resolve.rs/
-
-  # recursively compare dirA with dirB; show only filenames: -q (quiet)
-  diff -rq dirA dirB | sort
 
   # sort via 2nd key (?column?)
   sort -k2 file.csv
 
-  # :diff outputs the files in two columns, side by side, separated by spaces
+  # diff / compare directories, show only filenames
+  # -q, --brief        report only when files differ
+  # -r, --recursive
+  diff --brief --recursive dirA dirB --exclude '*.log' | sort
+  #
+  # outputs the files in two columns, side by side, separated by spaces
   sdiff file1 file0
-
+  #
   # output line-numbers
   diff --unchanged-line-format="" --old-line-format="" \
        --new-line-format=":%dn: %L" oldfile newfile
diff --git a/notes/cli/packaging.scrbl b/notes/cli/packaging.scrbl
index 7dffd73..2aa3ff6 100644
--- a/notes/cli/packaging.scrbl
+++ b/notes/cli/packaging.scrbl
@@ -1,6 +1,5 @@
 #lang notes
 
-
 @block{@block-name{flatpak}
   # offers a sandbox to run applications in isolation
 
@@ -19,6 +18,8 @@
   # grant access permissions to a file / directory
   sudo flatpak override org.telegram.desktop --filesystem=~/Downloads
   sudo flatpak override org.telegram.desktop --nofilesystem=/some/path/here
+
+  # installation directory: /var/lib/flatpak/app
 }
 
 @block{@block-name{snap}