Solaris Application Programming, 1/e - Chapter 4 - Parent Directory

72 Chapter 4 Informational Tools
The -kl option tells df to report disk space in kilobytes (rather than as the number
of 512-byte blocks), and to only report data for local drives. The columns are
reasonably self-explanatory and include the name of the disk, the size, the amount
used, the amount remaining, and the percentage amount used. The final column
shows the mount point. In this example, both the /data and the /export/home
file systems are running low on available space. On Solaris 9 and later there is a -h
option to produce the output in a more human-readable format.
4.3.14 Reporting Disk Space Used by Files (du)
The du utility reports the disk space used by a given directory and its subdirectories.
Once again, there is a -k option to report usage in kilobytes. On Solaris 9 and
later, there is also a -h option to report in a human-readable format. Example output
from the du command is shown in Example 4.29.
% du -k
8 ./.X11-unix
8 ./.X11-pipe
3704 .
% du -h
8K ./.X11-unix
8K ./.X11-pipe
3.6M .
The du command in Example 4.29 reported that two directories consume 8KB
each, and there is about 3.6MB of other data in the current directory.
4.4 Process- and Processor-Specific Tools
4.4.1 Introduction
Example 4.29 Example of Output from the du Command
This section covers tools that report the status of a particular process, or the
events encountered by a particular processor.
4.4.2 Timing Process Execution (time, timex, and ptime)
The commands time, timex, and ptime all report the amount of time that a process
uses. They all have the same syntax, as shown in Example 4.30. All three
tools produce output showing the time a process spends in user code and system
code, as well as reporting the elapsed time, or wall time, for the process. The wall