Using the Device File Systems, Directories, and Files

This chapter describes how to use your device file systems, directories, and files.

Information About Device File Systems, Directories, Files, and External Storage Devices

This section describes the file systems, directories, files, and support provided to the external storage devices on the Cisco NX-OS devices.

File Systems

The syntax for specifying a local file system is filesystem:[//modules/] . )


Note

The default filesystem parameter is bootflash:.

This table describes file systems that you can reference on your device.

Table 1. File System Components

File System Name

Module

Description

bootflash

sup-active

sup-local

Internal CompactFlash memory located on an active supervisor module. Used for storing image files, configuration files, and other miscellaneous files. The initial default directory is bootflash.

sup-standby

sup-remote

Internal CompactFlash memory located on a standby supervisor module. Used for storing image files, configuration files, and other miscellaneous files.

volatile

—

Volatile random-access memory (VRAM) located on a supervisor module. Used for temporary or pending changes.

log

—

Memory on an active supervisor module. Used for storing file statistics logs.

system

—

Memory on a supervisor module. Used for storing the running configuration file.

debug

—

Memory on a supervisor module. Used for storing the debug logs.

Directories

You can create directories on bootflash: and external flash memory (slot0:, usb1:, and usb2:). You can create, store, and access files from directories.

Files

You can create and access files from bootflash:, volatile:, slot0:, usb1:, and usb2: file systems. You can only access files from the system: file system. Use the debug: file system to store the debug log files specified using the debug logfile command.

You can download files, such as system image files, from remote servers using FTP, Secure Copy Protocol (SCP), Secure File Transfer Protocol (SFTP), and TFTP. You can also copy files from an external server to your device because your device can act as an SCP server.

Working with Directories

This section describes how to work with directories on a Cisco NX-OS device.

Identifying the Current Directory

You can display the directory name of your current directory.

SUMMARY STEPS

  1. pwd

DETAILED STEPS

Command or Action Purpose

pwd

Example:

switch# pwd

Displays the name of your current directory.

Changing the Current Directory

You can change the current directory for file system operations. The initial default directory is bootflash:.

SUMMARY STEPS

  1. (Optional) pwd
  2. cd {directory | filesystem:[//module/][directory]}

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) pwd

Example:

switch# pwd
 (Optional)

Displays the name of your current default directory.
Step 2

cd {directory | filesystem:[//module/][directory]}

Example:

switch# cd slot0:

Changes to a new current directory. The file system, module, and directory names are case sensitive.

Creating a Directory

You can create directories in the bootflash: and flash device file systems.

SUMMARY STEPS

  1. (Optional) pwd
  2. (Optional) cd {directory | filesystem:[//module/][directory]}
  3. mkdir [filesystem:[//module/]]directory

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) pwd

Example:

switch# pwd
 (Optional)

Displays the name of your current default directory.

Step 2

(Optional) cd {directory | filesystem:[//module/][directory]}

Example:

switch# cd slot0:
 (Optional)

Changes to a new current directory. The file system, module, and directory names are case sensitive.

Step 3

mkdir [filesystem:[//module/]]directory

Example:

switch# mkdir test

Creates a new directory. The filesystem argument is case sensitive. The directory argument is alphanumeric, case sensitive, and has a maximum of 64 characters.

Displaying Directory Contents

You can display the contents of a directory.

SUMMARY STEPS

  1. dir [directory | filesystem:[//module/][directory]]

DETAILED STEPS

Command or Action Purpose

dir [directory | filesystem:[//module/][directory]]

Example:

switch# dir bootflash:test

Displays the directory contents. The default is the current working directory. The file system and directory names are case sensitive.

Deleting a Directory

You can remove directories from the file systems on your device.

Before you begin

Ensure that the directory is empty before you try to delete it.

SUMMARY STEPS

  1. (Optional) pwd
  2. (Optional) dir [filesystem :[//module/][directory]]
  3. rmdir [filesystem :[//module/]]directory

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) pwd

Example:

switch# pwd
 (Optional)

Displays the name of your current default directory.
Step 2

(Optional) dir [filesystem :[//module/][directory]]

Example:

switch# dir bootflash:test
 (Optional)

Displays the contents of the current directory. The file system, module, and directory names are case sensitive.

If the directory is not empty, you must delete all the files before you can delete the directory.
Step 3

rmdir [filesystem :[//module/]]directory

Example:

switch# rmdir test

Deletes a directory. The file system and directory name are case sensitive.

Accessing the Directories on a Standby Supervisor Module

You can access all the file systems on a standby supervisor module (remote) from a session on an active supervisor module. This feature is useful when copying files to the active supervisor module that requires similar files to exist, as in the standby supervisor module.

To access the file systems on the standby supervisor module from a session on the active supervisor module, specify the standby supervisor module in the path to the file using either the filesystem://sup-remote/ command, or the filesystem://sup-standby/ command.

Working with Files

This section describes how to work with files on a Cisco NX-OS device.

Moving Files

You can move a file from one directory to another directory.


Caution

If a file with the same name already exists in the destination directory, that file is overwritten by the moved file.

You can use the move command to rename a file by moving the file within the same directory.

SUMMARY STEPS

  1. (Optional) pwd
  2. (Optional) dir [filesystem:[//module/][directory]]
  3. move [filesystem:[//module/][directory /] | directory/]source-filename {{filesystem:[//module/][directory /] | directory/}[target-filename] | target-filename}

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) pwd

Example:

switch# pwd
 (Optional)

Displays the name of your current default directory.
Step 2

(Optional) dir [filesystem:[//module/][directory]]

Example:

switch# dir bootflash
 (Optional)

Displays the contents of the current directory. The file system and directory name are case sensitive.
Step 3

move [filesystem:[//module/][directory /] | directory/]source-filename {{filesystem:[//module/][directory /] | directory/}[target-filename] | target-filename}

Example:

switch# move test old_tests/test1

Moves a file.

The file system, module, and directory names are case sensitive.

The target-filename argument is alphanumeric, case sensitive, and has a maximum of 64 characters. If the target-filename argument is not specified, the filename defaults to the source-filename argument value.

Copying Files

You can make copies of files, either within the same directory or on another directory.


Note

Use the dir command to ensure that enough space is available in the target file system. If enough space is not available, use the delete command to remove unneeded files.

SUMMARY STEPS

  1. (Optional) pwd
  2. (Optional) dir [filesystem:[//module/][directory]]
  3. copy [filesystem:[//module/][directory/] | directory/]source-filename | {filesystem:[//module/][directory/]] | directory/}[target-filename]

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) pwd

Example:

switch# pwd
 (Optional)

Displays the name of your current default directory.

Step 2

(Optional) dir [filesystem:[//module/][directory]]

Example:

switch# dir bootflash
 (Optional)

Displays the contents of the current directory. The file system and directory name are case sensitive.

Step 3

copy [filesystem:[//module/][directory/] | directory/]source-filename | {filesystem:[//module/][directory/]] | directory/}[target-filename]

Example:

switch# copy test old_tests/test1

Copies a file. The file system, module, and directory names are case sensitive. The source-filename argument is alphanumeric, case sensitive, and has a maximum of 64 characters. If the target-filename argument is not specified, the filename defaults to the source-filename argument value.

The copy command supports ftp, scp, sftp, tftp and http protocols.

Deleting Files

You can delete a file from a directory.

SUMMARY STEPS

  1. (Optional) dir [filesystem:[//module/][directory]]
  2. delete {filesystem:[//module/][directory/] | directory/}filename

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) dir [filesystem:[//module/][directory]]

Example:

switch# dir bootflash
 (Optional)

Displays the contents of the current directory. The file system and directory name are case sensitive.

Step 2

delete {filesystem:[//module/][directory/] | directory/}filename

Example:

switch# delete test old_tests/test1

Deletes a file. The file system, module, and directory names are case sensitive. The source-filename argument is case sensitive.

Caution 

If you specify a directory, the delete command deletes the entire directory and all its contents.

Displaying File Contents

You can display the contents of a file.

SUMMARY STEPS

  1. show file [filesystem:[//module/]][directory/]filename

DETAILED STEPS

Command or Action Purpose

show file [filesystem:[//module/]][directory/]filename

Example:

switch# show file bootflash:test-results

Displays the file contents.

Displaying File Checksums

You can display checksums to check the file integrity.

SUMMARY STEPS

  1. show file [filesystem:[//module/]][directory/]filename {cksum | md5sum}

DETAILED STEPS

Command or Action Purpose

show file [filesystem:[//module/]][directory/]filename {cksum | md5sum}

Example:

switch# show file bootflash:trunks2.cfg cksum

Displays the checksum or MD5 checksum of the file.

Compressing and Uncompressing Files

You can compress and uncompress files on your Cisco NX-OS device using Lempel-Ziv 1977 (LZ77) coding.

SUMMARY STEPS

  1. (Optional) dir [filesystem:[//module/]directory]]
  2. gzip [filesystem:[//module/][directory/] | directory/]filename
  3. gunzip [filesystem:[//module/][directory/] | directory/]filename .gz

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) dir [filesystem:[//module/]directory]]

Example:

switch# dir bootflash:
 (Optional)

Displays the contents of the current directory. The file system and directory name are case sensitive.
Step 2

gzip [filesystem:[//module/][directory/] | directory/]filename

Example:

switch# gzip show_tech

Compresses a file. After the file is compressed, it has a .gz suffix.
Step 3

gunzip [filesystem:[//module/][directory/] | directory/]filename .gz

Example:

switch# gunzip show_tech.gz

Uncompresses a file. The file to uncompress must have the .gz suffix. After the file is uncompressed, it does not have the .gz suffix.

Displaying the Last Lines in a File

You can display the last lines of a file.

SUMMARY STEPS

  1. tail [filesystem:[//module/]][directory/]filename [lines]

DETAILED STEPS

Command or Action Purpose

tail [filesystem:[//module/]][directory/]filename [lines]

Example:

switch# tail ospf-gr.conf

Displays the last lines of a file. The default number of lines is 10. The range is from 0 to 80 lines.

Redirecting show Command Output to a File

You can redirect show command output to a file on bootflash:, slot0:, volatile:, or on a remote server. You can also specify the format for the command output.

SUMMARY STEPS

  1. (Optional) terminal redirection-mode {ascii | zipped}
  2. show-command > [filesystem:[//module/][directory] | [directory /]]filename

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) terminal redirection-mode {ascii | zipped}

Example:

switch# terminal redirection-mode zipped
 (Optional)

Sets the redirection mode for the show command output for the user session. The default mode is ascii .

Step 2

show-command > [filesystem:[//module/][directory] | [directory /]]filename

Example:

switch# show tech-support > bootflash:techinfo

Redirects the output from a show command to a file.

Finding Files

You can find the files in the current working directory and its subdirectories that have names that begin with a specific character string.

SUMMARY STEPS

  1. (Optional) pwd
  2. (Optional) cd {filesystem:[//module/][directory] | directory}
  3. find filename-prefix

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) pwd

Example:

switch# pwd
 (Optional)

Displays the name of your current default directory.
Step 2

(Optional) cd {filesystem:[//module/][directory] | directory}

Example:

switch# cd bootflash:test_scripts
 (Optional)

Changes the default directory.
Step 3

find filename-prefix

Example:

switch# find bgp_script

Finds all filenames in the default directory and in its subdirectories beginning with the filename prefix. The filename prefix is case sensitive.

Working with Archive Files

The Cisco NX-OS software supports archive files. Besides creating an archive file, you can append files to, extract files from, and list the files in an archive file.

Creating an Archive Files

You can create an archive file and add files to it. You can specify the following compression types:

  • bzip2

  • gzip

  • Uncompressed

The default is gzip.

SUMMARY STEPS

  1. tar create {bootflash: | volatile:}archive-filename [absolute] [bz2-compress] [gz-compress] [remove] [uncompressed] [verbose] filename-list

DETAILED STEPS

Command or Action Purpose

tar create {bootflash: | volatile:}archive-filename [absolute] [bz2-compress] [gz-compress] [remove] [uncompressed] [verbose] filename-list

Creates an archive file and adds files to it. The filename is alphanumeric, not case sensitive, and has a maximum length of 240 characters.

The absolute keyword specifies that the leading backslash characters (\) should not be removed from the names of the files added to the archive file. By default, the leading backslash characters are removed.

The bz2-compress , gz-compress , and uncompressed keywords determine the compression utility used when files are added, or later appended, to the archive and the decompression utility to use when extracting the files. If you do not specify an extension for the archive file, the defaults are as follows:

  • For bz2-compress , the extension is .tar.bz2.

  • For gz-compress , the extension is .tar.gz.

  • For uncompressed , the extension is .tar.

The remove keyword specifies that the Cisco NX-OS software should delete the files from the file system after adding them to the archive. By default, the files are not deleted.

The verbose keyword specifies that the Cisco NX-OS software should list the files as they are added to the archive. By default, the files are listed as they are added.

Example

This example shows how to create a gzip compressed archive file:

switch# tar create bootflash:config-archive gz-compress bootflash:config-file

Appending Files to an Archive File

You can append files to an existing archive file on your Cisco NX-OS device.

Before you begin

You have created an archive file on your Cisco NX-OS device.

SUMMARY STEPS

  1. tar append {bootflash: | volatile:}archive-filename [absolute] [remove] [verbose] filename-list

DETAILED STEPS

Command or Action Purpose

tar append {bootflash: | volatile:}archive-filename [absolute] [remove] [verbose] filename-list

Adds files to an existing archive file. The archive filename is not case sensitive.

The absolute keyword specifies that the leading backslash characters (\) should not be removed from the names of the files added to the archive file. By default, the leading backslash characters are removed.

The remove keyword specifies that the Cisco NX-OS software should delete the files from the filesystem after adding them to the archive. By default, the files are not deleted.

The verbose keyword specifies that the Cisco NX-OS software should list the files as they are added to the archive. By default, the files are listed as they are added.

Example

This example shows how to append a file to an existing archive file:

switch# tar append bootflash:config-archive.tar.gz bootflash:new-config

Extracting Files from an Archive File

You can extract files to an existing archive file on your Cisco NX-OS device.

Before you begin

You have created an archive file on your Cisco NX-OS device.

SUMMARY STEPS

  1. tar extract {bootflash: | volatile:}archive-filename [keep-old] [screen] [to {bootflash: | volatile:}[/directory-name]] [verbose]

DETAILED STEPS

Command or Action Purpose

tar extract {bootflash: | volatile:}archive-filename [keep-old] [screen] [to {bootflash: | volatile:}[/directory-name]] [verbose]

Extracts files from an existing archive file. The archive filename is not case sensitive.

The keep-old keyword indicates that the Cisco NX-OS software should not overwrite files with the same name as the files being extracted.

The screen keyword specifies that the Cisco NX-OS software should display the contents of the extracted files to the terminal screen.

The to keyword specifies the target file system. You can include a directory name. The directory name is alphanumeric, case sensitive, and has a maximum length of 240 characters.

The verbose keyword specifies that the Cisco NX-OS software should display the names of the files as they are extracted.

Example

This example shows how to extract files from an existing archive file:

switch# tar extract bootflash:config-archive.tar.gz

Displaying the Filenames in an Archive File


Note

The archive filename is not case sensitive.

To display the file names in an archive file, run the following command:

tar list {bootflash: | volatile:}archive-filename

Example: 


switch# tar list bootflash:config-archive.tar.gz
config-file
new-config

Examples of Using a File System

This section includes examples of using a file system on a Cisco NX-OS device.

Accessing Directories on a Standby Supervisor Module

This example shows how to list the files on a standby supervisor module: 


switch# dir bootflash://sup-remote
   12198912     Aug 27 16:29:18 2003  m9500-sf1ek9-kickstart-mzg.1.3.0.39a.bin
    1864931     Apr 29 12:41:59 2003  dplug2
      12288     Apr 18 20:23:11 2003  lost+found/
   12097024     Nov 21 16:34:18 2003  m9500-sf1ek9-kickstart-mz.1.3.1.1.bin
   41574014     Nov 21 16:34:47 2003  m9500-sf1ek9-mz.1.3.1.1.bin 

Usage for bootflash://sup-remote
   67747169 bytes used
  116812447 bytes free
  184559616 bytes total

This example shows how to delete a file on a standby supervisor module: 


switch# delete bootflash://sup-remote/aOldConfig.txt

Moving Files

This example shows how to move a file on an external flash device: 


switch# move slot0:samplefile slot0:mystorage/samplefile

This example shows how to move a file in the default file system: 


switch# move samplefile mystorage/samplefile

Copying Files

This example shows how to copy a file called samplefile from the root directory of the slot0: file system to the mystorage directory: 

switch# copy slot0:samplefile slot0:mystorage/samplefile

This example shows how to copy a file from the current directory: 

switch# copy samplefile mystorage/samplefile

This example shows how to copy a file from an active supervisor module bootflash to a standby supervisor module bootflash: 

switch# copy bootflash:system_image bootflash://sup-2/system_image

Note

You can also use the copy command to upload and download files from the slot0: or bootflash: file system to or from an FTP, TFTP, SFTP, or SCP server.

Deleting a Directory

You can remove directories from the file systems on your device.

Before you begin

Ensure that the directory is empty before you try to delete it.

SUMMARY STEPS

  1. (Optional) pwd
  2. (Optional) dir [filesystem :[//module/][directory]]
  3. rmdir [filesystem :[//module/]]directory

DETAILED STEPS

  Command or Action Purpose
Step 1

(Optional) pwd

Example:

switch# pwd
 (Optional)

Displays the name of your current default directory.
Step 2

(Optional) dir [filesystem :[//module/][directory]]

Example:

switch# dir bootflash:test
 (Optional)

Displays the contents of the current directory. The file system, module, and directory names are case sensitive.

If the directory is not empty, you must delete all the files before you can delete the directory.
Step 3

rmdir [filesystem :[//module/]]directory

Example:

switch# rmdir test

Deletes a directory. The file system and directory name are case sensitive.

Displaying File Contents

This example shows how to display the contents of a file on an external flash device: 


switch# show file slot0:test
configure terminal 
interface ethernet 1/1 
no shutdown 
end 
show interface ethernet 1/1

This example shows how to display the contents of a file that resides in the current directory: 


switch# show file myfile

Displaying File Checksums

This example shows how to display the checksum of a file:


switch# show file bootflash:trunks2.cfg cksum 
583547619

This example shows how to display the MD5 checksum of a file:

switch# show file bootflash:trunks2.cfg md5sum 
3b94707198aabefcf46459de10c9281c

Compressing and Uncompressing Files

This example shows how to compress a file: 


switch# dir
    1525859     Jul 04 00:51:03 2003 Samplefile 
...
switch# gzip volatile:Samplefile
switch# dir
     266069     Jul 04 00:51:03 2003 Samplefile.gz 
...

This example shows how to uncompress a compressed file: 


switch# dir
     266069     Jul 04 00:51:03 2003 Samplefile.gz 
... 
switch# gunzip samplefile
switch# dir
    1525859     Jul 04 00:51:03 2003 Samplefile 
...

Redirecting show Command Output

This example shows how to direct the output to a file on the bootflash: file system: 


switch# show interface > bootflash:switch1-intf.cfg

This example shows how to direct the output to a file on external flash memory: 


switch# show interface > slot0:switch-intf.cfg

This example shows how to direct the output to a file on a TFTP server: 


switch# show interface > tftp://10.10.1.1/home/configs/switch-intf.cfg
Preparing to copy...done

This example shows how to direct the output of the show tech-support command to a file: 


switch# show tech-support > Samplefile
Building Configuration ... 
switch# dir
    1525859     Jul 04 00:51:03 2003 Samplefile 
Usage for volatile://
    1527808 bytes used
   19443712 bytes free
   20971520 bytes total

Finding Files

This example shows how to find a file in the current default directory:


switch# find smm_shm.cfg
/usr/bin/find: ./lost+found: Permission denied 
./smm_shm.cfg 
./newer-fs/isan/etc/routing-sw/smm_shm.cfg 
./newer-fs/isan/etc/smm_shm.cfg

Default Settings for File System Parameters

This table lists the default settings for the file system parameters.

Table 2. Default File System Settings

Parameter

Default

Default filesystem

bootflash:

Additional References for File Systems

This section includes additional information related to the file systems.

Related Documents for File Systems

Related Topic

Document Title

Licensing

Cisco NX-OS Licensing Guide

Command reference

Cisco Nexus 3000 Series NX-OS Command Reference