Cross-Compiled Linux From Scratch - Version GIT-20170803-x86_64-Pure64

Chapter 10. Installing Basic System Software

10.27. Procps-ng-3.3.12

The Procps-ng package contains programs for monitoring processes.

10.27.1. Installation of Procps-ng

Prepare procps-ng for compilation: 

./configure \
    --prefix=/usr \
    --exec-prefix= \
    --libdir=/usr/lib \
    --docdir=/usr/share/doc/procps-ng-3.3.12 \
    --disable-kill

The meaning of the configure options:

--disable-kill

This switch disables building the kill program - a better version was installed by the Util-linux package.

Compile the package: 

make
[Note]

Note

When using the boot method, two tests will fail if the hostname is not set. If you have booted the temporary system, and want to run the test suite, run the following command: 

hostname clfs

If running the testsuite, first disable a test which fails when scripting does not use a tty device: 

sed -i -r 's|(pmap_initname)\\\$|\1|' testsuite/pmap.test/pmap.exp
make check

Install the package: 

make install

Move essential files to a location that can be found if /usr is not mounted: 

mv -v /usr/lib/libprocps.so.* /lib
ln -sfv ../../lib/$(readlink /usr/lib/libprocps.so) /usr/lib/libprocps.so

10.27.2. Contents of Procps-ng

Installed programs: free, pgrep, pidof, pkill, pmap, ps, pwdx, slabtop, sysctl, tload, top, uptime, vmstat, w, watch
Installed library: libprocps.{a,so}
Installed directories: /usr/include/proc, /usr/share/doc/procps-ng-3.3.12

Short Descriptions

free

Reports the amount of free and used memory (both physical and swap memory) in the system

pgrep

Looks up processes based on their name and other attributes

pidof

Reports the PIDs of the given programs

pkill

Signals processes based on their name and other attributes

pmap

Reports the memory map of the given process

ps

Lists the current running processes

pwdx

Reports the current working directory of a process

slabtop

Displays detailed kernel slab cache information in real time

sysctl

Modifies kernel parameters at run time

tload

Prints a graph of the current system load average

top

Displays a list of the most CPU intensive processes; it provides an ongoing look at processor activity in real time

uptime

Reports how long the system has been running, how many users are logged on, and the system load averages

vmstat

Reports virtual memory statistics, giving information about processes, memory, paging, block Input/Output (IO), traps, and CPU activity

w

Shows which users are currently logged on, where, and since when

watch

Runs a given command repeatedly, displaying the first screen-full of its output; this allows a user to watch the output change over time

libprocps

Contains the functions used by most programs in this package