Dell Brocade DCX, Configuration Manual

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BigIron RX Series Configuration Guide 39
53-1001810-01
Flash memory and PCMCIA flash card file management commands
3
CAUTION
Do not add or remove a flash card while a file operation involving the flash card’s slot is in
progress. Doing so can result in corruption of the flash card. If this occurs, you may need to
reformat the flash card to make it usable again. Reformatting the card erases all data stored on
the card.
Management focus
The management focus determines the default file system (flash memory or the flash card inserted
in slot 1 or 2) to which a file management operation applies. When you power on or reload a BigIron
RX Series system, by default, the management focus is on flash memory.
You can change the current management focus from flash memory to a slot and subdirectory using
the cd or chdir command. (For more information about these commands, refer to
“Switching the
management focus” on page 43.)
To determine the slot and subdirectory that have the current management focus, enter the pwd
command. (For more information about this command, refer to
“Determining the current
management focus” on page 42.)
Most file management commands provide the option of specifying the file system to which the
command applies. If you want the command to apply to the file system that has the current
management focus, you do not need to specify the file system. If you want the operation to apply to
the file system that does not have the current management focus, you must specify one of the
following keywords:
•
flash – indicates flash memory
•
slot1 – indicates the flash card inserted in slot 1
•
slot2 – indicates the flash card inserted in slot 2
For example, if you want to display a directory of files in flash memory and flash memory has the
current management focus, you do not need to specify the flash keyword. However, if you want to
display a directory of files for slot 1 and flash memory has the current focus, you must specify the
slot1 keyword.
Flash memory file system
The flash memory file system is flat, which means that it does not support subdirectories. As a
result, you cannot create or delete subdirectories in this file system using the md or mkdir and rd or
rmdir commands, respectively. Also, when specifying the syntax for the various file management
commands, you will not need to specify a pathname to a subdirectory because it is not possible for
a subdirectory to exist.
File naming conventions
A file name in the flash memory file system can be a maximum of 31 characters. File name are
case sensitive. The flash memory file system does not accept spaces as part of a file name.
The following characters are valid in file names:
•
All upper and lowercase letters