show more /proc/entries using head(1)

OBS-URL: https://build.opensuse.org/package/show/Virtualization/libguestfs?expand=0&rev=60

libguestfs.mkinitrd.boot.sh

@@ -8,6 +8,7 @@
 #%programs: lvm
 #%programs: grep
 #%programs: ls
+#%programs: head
 #%programs: cat
 #%programs: ip
 #%programs: date
@@ -38,13 +39,12 @@ for f in /sys/block/vd*/queue/rotational; do if test -f $f ; then echo 1 > $f; f
 # These are useful when debugging.
 if grep -sq guestfs_verbose=1 /proc/cmdline; then
     ls -lR /dev
-    cat /proc/mounts
+    head -n 1234 /proc/mounts /proc/modules /proc/version /proc/cpuinfo
     lvm pvs
     lvm vgs
     lvm lvs
     ip a
     ip r
-    cat /proc/modules
     #hwclock -r
     date
     #ping -n -v -c 5 10.0.2.2