connect lines

[wiki.git] / ubuntu.mdwn

diff --git a/ubuntu.mdwn b/ubuntu.mdwn
index c87996b99dd6e245b2086eb68f178cd01c36b397..ce90e2df85ad04cc8e6b60d52660247aa47e843d 100644 (file)
--- a/ubuntu.mdwn
+++ b/ubuntu.mdwn
@@ -10,10 +10,19 @@ https://help.ubuntu.com/community/AptGet/Howto
     dpkg --list
 
     # show info for a package
-    dpkg --status package_name
+    dpkg --status foobar
 
-    # show files owned by a package
-    dpkg --listfiles package_name
+    # show files owned by an installed package
+    dpkg --listfiles foobar
+
+    # show files owned by an uninstalled package
+    apt-file list foobar
+
+    # show which package owns a file
+    dpkg -S /usr/bin/foobar
+
+    # show which package will own a file
+    apt-file find /usr/bin/foobar
 
     # resynchronize the package index files from their sources
     apt-get update
@@ -129,3 +138,11 @@ https://www.digitalocean.com/community/tutorials/a-basic-mysql-tutorial
     sudo timedatectl set-timezone America/New_York
 
 https://www.digitalocean.com/community/tutorials/how-to-set-up-time-synchronization-on-ubuntu-18-04
+
+## Grub
+
+On a new installation of Ubuntu 18.04 on Digital Ocean I ran `sudo apt-get dist-upgrade` and saw this message:
+
+"A new version of /boot/grub/menu.lst is available, but the version installed currently has been locally modified. What would you like to do about menu.lst?
+
+I selected the first option called "install the package maintainer's version" even though the second option called "keep the local version currently installed" was highlighted. Showing differences didn't work. I rebooted the server and it came back up. There's a related post at https://www.digitalocean.com/community/questions/ubuntu-new-boot-grub-menu-lst-after-apt-get-upgrade