6.24. Procps-ng-3.3.9

The Procps-ng package contains programs for monitoring processes.

Approximate build time: 0.2 SBU
Required disk space: 13 MB

6.24.1. Installation of Procps-ng

Now prepare procps-ng for compilation:

./configure --prefix=/usr                           \
            --exec-prefix=                          \
            --libdir=/usr/lib                       \
            --docdir=/usr/share/doc/procps-ng-3.3.9 \
            --disable-static                        \

The meaning of the configure options:


This switch disables building the kill command that was installed in the util-linux package.

Compile the package:


The test suite needs some custom modifications for LFS. Remove the test that fails when scripting does not use a tty device. To run the test suite, run the following commands:

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

Install the package:

make install

Finally, move essential files to a location that can be found if /usr is not mounted.

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

6.24.2. Contents of Procps-ng

Installed programs: free, pgrep, pidof, pkill, pmap, ps, pwdx, slabtop, sysctl, tload, top, uptime, vmstat, w, and, watch
Installed library: libprocps.so

Short Descriptions


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


Looks up processes based on their name and other attributes


Looks up processes based on their name and other attributes


Signals processes based on their name and other attributes


Reports the memory map of the given process


Lists the current running processes


Reports the current working directory of a process


Displays detailed kernel slap cache information in real time


Modifies kernel parameters at run time


Prints a graph of the current system load average


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


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


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


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


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


Contains the functions used by most programs in this package