B-3
Catalyst 3550 Multilayer Switch Software Configuration Guide
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Appendix B Working with the IOS File System, Configuration Files, and Software Images
Working with the Flash File System
Setting the Default File System
You can specify the file system or directory that the system uses as the default file system by using the
cd filesystem: privileged EXEC command. You can set the default file system to omit the filesystem:
argument from related commands. For example, for all privileged EXEC commands that have the
optional filesystem: argument, the system uses the file system specified by the cd command.
By default, the default file system is flash:.
You can display the current default file system as specified by the cd command by using the pwd
privileged EXEC command.
Displaying Information about Files on a File System
You can view a list of the contents of a file system before manipulating its contents. For example, before
copying a new configuration file to Flash memory, you might want to verify that the file system does not
already contain a configuration file with the same name. Similarly, before copying a Flash configuration
file to another location, you might want to verify its filename for use in another command.
To display information about files on a file system, use one of the privileged EXEC commands in
Table B-2
:
Changing Directories and Displaying the Working Directory
Beginning in privileged EXEC mode, follow these steps to change directories and display the working
directory.
Table B-2
Commands for Displaying Information About Files
Command
Description
dir [/all] [filesystem:][filename]
Display a list of files on a file system.
show file systems
Display more information about each of the files on a file system.
show file information file-url
Display information about a specific file.
show file descriptors
Display a list of open file descriptors. File descriptors are the internal representations
of open files. You can use this command to see if another user has a file open.
Command
Purpose
Step 1
dir filesystem:
Display the directories on the specified file system.
For filesystem:, use flash: for the system board Flash device.
Step 2
cd new_configs
Change to the directory of interest.
The command example shows how to change to the directory named
new_configs.
Step 3
pwd
Display the working directory.
