M e r i d i a n I I U s e r M a n u a l
161
"Smarter Timing Solutions"
Appendix
C
Helpful Linux Information
You do not need knowledge of Linux commands in order to operate Meridian II. All commands nec-
essary for proper operation are described in
Chapter 3 - Console Port Control and Status
. How-
ever, the Meridian II does support a subset of the standard Linux commands and utilities and it uses
the
bash
shell, which is the Linux standard, full-featured shell. Very brief descriptions of some of the
most useful Linux information is described in this appendix.
Linux Users
Meridian II is shipped from the factory with two users enabled. The first is the “root” user with
password “endrun_1”. The root user has access to everything on the system, including the ability to
perform system setup procedures.
The other user is “sysuser” with password “Praecis”. When logged in as sysuser you may check
status information and view log files but you will not be able to modify any system settings or view
secure files.
For security reasons, we recommend you change the default passwords using the Linux
passwd
com-
mand (see
Change Password
below).
Linux Commands
Detailed Information Is Available
A very brief description of the most helpful Linux commands and utilities is listed in this appendix.
On Linux systems, the system commands are located in the directories with “bin” in their name, e.g.
/usr/bin
or
/sbin
. You can list the contents of those directories using the
ls
command to see what is
installed on your Meridian II. Then you can find out about those commands using the
man
command,
which stands for “manual”. For example, to read details on the
ps
command type this:
man ps
A very detailed description, called a “man page”, of the
ps
command will be shown. To navigate
in the document, press `d’ to scroll down, `b’ to scroll up, and `q’ to quit and return to the command
prompt.
To search the database of man pages, use either
apropos
or
whatis
.
apropos
will do partial word
searches, while
whatis
will only find matching whole words. For example to find all man pages
dealing with ntp:
apropos ntp
Summary of Contents for Meridian II
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