procps-3.1.13 --> procps-3.1.14

top: displays on more genuine serial terminals
handle 32-bit dev_t of Linux 2.6
ps: finally, m and -m satisfy the original design
ps: distinct per-thread and whole-process pending signals

procps-3.1.12 --> procps-3.1.13

ps: can display NPTL threads w/ kernel patch
no seLinux for now (new kernel interface)

procps-3.1.11 --> procps-3.1.12

ps: explicit width ("ps -o pid,wchan:42,args")
ps: $PS_FORMAT works properly                    #201575
top: new Linux 2.6.0-test4 CPU stats shown
top: multiple -p options work again
top: fixed 4 GB wrap-around
ps: has a set of tests to ensure correctness
man page: /var/run/utmp, not /etc/utmp           #206583
required flags moved out of CFLAGS               #205429
RPM generation handles /lib64
WCHAN skips leading '.'
vmstat: numerous new features

procps-3.1.10 --> procps-3.1.11

compile with gcc 2.95 again (C99 issue)

procps-3.1.9 --> procps-3.1.10

handle GPLONLY_ symbols                       #143549 #188374
kill: better man page
skill: better man page
ps: PID-like columns change width as needed
top: COMMAND instead of Command
vmstat: -m displays slabinfo
vmstat: -d displays disk stats

procps-3.1.8 --> procps-3.1.9

memory sizes fixed for 64-bit w/ gcc 3.x      #194376 #191933
ps: detect broken OS install w/o /proc mounted        #172735
top: fix suspend/resume behavior
top: ditch warning until a GOOD interface is found    #188271
kill: more info in the man page                       #182414
ps: document the -o, o, -O, and O options             #169301
vmstat: choose units you like: 1000, 1024, 1000000...

procps-3.1.7 --> procps-3.1.8

top: fix keyboard handling (help screen, etc.)

procps-3.1.6 --> procps-3.1.7

Makefile: made SKIP feature easier to use
watch: --help now explains -t, --no-title    #182246
ps: warning directs users to the FAQ
top: batch mode can refresh by fractional seconds
top: faster start-up
top: do not refresh like crazy
ps: better crash message

procps-3.1.5 --> procps-3.1.6

handle the 2.5.61 kernel
top: memory leak fixed
ps: new --ppid option selects by PPID
watch: new --no-title option              #179862
handle SPARC Linux badness
rare crash fixed
compile with gcc 2.91.xx again
more informative "ps --info"
README update
ps: compare more with "ps -C verylongname"     #178127

procps-3.1.4 --> procps-3.1.5

ancient (2.x.xx era) data corruption fixed
serious hidden-process problem (3.1.3+) fixed
w: escape sequence vulnerability fixed

procps-3.1.3 --> procps-3.1.4

top: was trashing every "3" in a command name
top: when killing a process, the PID was cut at a "3"
top: more reliable %CPU
update copyright dates (GPL & LGPL require this)
RPM generation works now

procps-3.1.2 --> procps-3.1.3

uses /proc/*/wchan files when available
top: user selection
sysctl: add -e for Red Hat 8.0 boot scripts
sysctl: the obvious --help, -V, and --version
sysctl: some command line error checking
w: stdout, not stderr -- thanks to Sander van Malssen

procps-3.1.1 --> procps-3.1.2

better RPM generation
use C99 features
some seLinux fixes
now count Inact_laundry as needed  #172163
ps: fewer globals
ps: hardware-enforced buffer protection
ps: 1 kB smaller
top: B command added (for bold on/off)
top: handle old (and future) config files
top: man page tweak
top: old sort keys     #167249
top: out-of-bounds RT as "RT"
top: several times faster
top: t command fixed
vmstat: -f
vmstat: -s
w: much faster
watch: don't drop empty lines   #171005
watch: re-indented

procps-3.1.0 --> procps-3.1.1

vmstat faster on 2.5.xx kernels
vmstat header fixed
vmstat -a re-fixed

procps-3.0.5 --> procps-3.1.0

vmstat displays IO-wait time instead of bogus "w"
can build w/o shared library (set SHARED=0)
when IO-wait hidden, count as idle, not as sys
pmap command added (like Sun has)
do not crash GNU make 3.79
top slightly faster

procps-3.0.4 --> procps-3.0.5

top tolerates super-wide displays
better (?) RPM generation
XConsole and top.desktop removed
old build system removed
code cleanup
pgrep and pkill get "-o" (oldest matching process)
had vmstat "bi" and "bo" output interchanged on 2.5.xx
fix man page tbl directives
top man page cleaned up

procps-3.0.3 --> procps-3.0.4

make top go faster
Linux 2.2.xx ELF note warning removed
only show IO-wait on recent kernels
fix top's SMP stats
fix top for "dumb" and "vt510" terminals
in top, limit the priority values to -99 ... 99

procps-3.0.2 --> procps-3.0.3

more "make install" fixes
lib CFLAGS working again
top.1 codes fixed
bad (int*) cast in top removed
top runs faster
libproc memory corruption fixed
rant moved out of top.1 man page
ability to SKIP installing things
fixed ps --sort crash

procps-3.0.1 --> procps-3.0.2

top defaults to the old layout
top defaults to sorting by %CPU
fix top for non-SMP 2.2.xx and 2.0.xx
new "make install" fixed
vmstat -a fixed
vmstat compiles with latest gcc-3.x
vmstat does 64-bit time

procps-3.0.0 --> procps-3.0.1

sysctl handles net/ipv4/conf/eth1.0123/tag (VLAN interface)
sysctl handles net.ipv4.conf.eth1/0123.tag (VLAN interface)
"ps" is now about 2x faster than in procps-2.x.x
"ps -F" now documented
w works in KOI8-R locale
vmstat documentation update
"skill -n blah blah blah" lets you test options
simple "make && make install" now

procps-2.x.x --> procps-3.0.0

designed to support Linux 2.0 through 2.5.41 and beyond
new top, with optional: color, windowing, SMP stats
runs faster
more "it crashes" bugs fixed
top shows IO-wait time
vmstat can show active/inactive memory stats
real-time info supported in ps
correct "ps -o size" and "ps --sort size"
new maintainers
reduced memory usage for ps
allow large PIDs to be specified
SELINUX support is just a recompile away
the "F" column shrank, so "ps -l" has more command name room
64-bit time reduces the overflow problem
support S/390, IA-64 emulator, and user-mode Linux
oldps is gone
configure script -- use "make -f Makefile.noam" as a backup
"w" program better at determining what a user is doing
more stable
code at http://procps.sf.net/ now (SourceForge)

Earlier changes, for those not using Debian already:

more stable
runs faster
-F format option
better error reporting in ps for unknown format specifiers
BSD's sysctl options -b and -X
top displays well on large-memory systems
old BSD-style select-by-PID ("ps l$$")
15-character user names
ps 'f' ASCII art forest fixed
add SIGSYS on i386
top reports real RSS value
large-memory systems work
minimal ps program for embedded systems (minimal.c)
BSD personality process selection fixed
support locale (French) with ',' and '.' mixed up
pgrep program
includes the "kill" and "nice" programs
don't chop non-tty ps output at 80 columns