NAME

       knife-xargs - The man page for the knife xargs subcommand.

       The knife xargs subcommand is used to take patterns from standard input, download as JSON,
       run a command against the downloaded JSON, and then upload any changes.

       Syntax

       This subcommand has the following syntax:

          $ knife xargs [PATTERN...] (options)

       Options

       This subcommand has the following options:

       -0     Use to show a NULL character (\0) instead of white space as the separator. Default:
              false.

       --chef-repo-path PATH
              The  path  to  the  chef-repo.  This  setting will override the default path to the
              chef-repo. Default: same as specified by chef_repo_path in config.rb.

       --concurrency
              The number of allowed concurrent connections. Default: 10.

       --[no-]diff
              Use to show a diff when a file changes. Default: --diff.

       --dry-run
              Use to prevent changes from being uploaded to the Chef server. Default: false.

       --[no-]force
              Use to force the upload of files  even  if  they  haven't  been  changed.  Default:
              --no-force.

       -I REPLACE_STRING, --replace REPLACE_STRING
              Use to define a string that will be used to replace all occurrences of a file name.
              Default: nil.

       -J REPLACE_STRING, --replace-first REPLACE_STRING
              Use to define a string that will be used to replace the first occurrence of a  file
              name. Default: nil.

       --local
              Use  to build or execute a command line against a local file. Set to false to build
              or execute against a remote file. Default: false.

       -n MAX_ARGS, --max-args MAX_ARGS
              The maximum number of arguments per command line. Default: nil.

       -p [PATTERN...], --pattern [PATTERN...]
              One (or more) patterns for a command line. If this option is not specified, a  list
              of patterns may be expected on standard input. Default: nil.

       --repo-mode MODE
              The  layout  of  the  local  chef-repo.  Possible  values:  static,  everything, or
              hosted_everything. Use static for just roles,  environments,  cookbooks,  and  data
              bags.  By  default,  everything  and  hosted_everything  are  dynamically  selected
              depending on the server type. Default value: default.

       -s LENGTH, --max-chars LENGTH
              The maximum size (in characters) for a command line. Default: nil.

       -t     Use to run the print command on the command line. Default: nil.

       -c CONFIG_FILE, --config CONFIG_FILE
              The configuration file to use.

       --chef-zero-port PORT
              The port on which chef-zero will listen.

       -d, --disable-editing
              Use to prevent the $EDITOR from being opened and to accept data as-is.

       --defaults
              Use to have knife use the default value instead of asking a user to provide one.

       -e EDITOR, --editor EDITOR
              The $EDITOR that is used for all interactive commands.

       -E ENVIRONMENT, --environment ENVIRONMENT
              The name of the environment. When this option is added to a  command,  the  command
              will run only against the named environment.

       -F FORMAT, --format FORMAT
              The output format: summary (default), text, json, yaml, and pp.

       -h, --help
              Shows help for the command.

       -k KEY, --key KEY
              The  private key that knife will use to sign requests made by the API client to the
              Chef server.

       --[no-]color
              Use to view colored output.

       --print-after
              Use to show data after a destructive operation.

       --server-url URL
              The URL for the Chef server.

       -u USER, --user USER
              The user name used by knife to sign requests made by the API  client  to  the  Chef
              server. Authentication will fail if the user name does not match the private key.

       -v, --version
              The version of the chef-client.

       -V, --verbose
              Set for more verbose outputs. Use -VV for maximum verbosity.

       -y, --yes
              Use  to  respond  to  all  confirmation  prompts with "Yes". knife will not ask for
              confirmation.

       -z, --local-mode
              Use to run the chef-client in local  mode.  This  allows  all  commands  that  work
              against the Chef server to also work against the local chef-repo.

       Examples

       The  following  examples  show  various  ways of listing all nodes on the server, and then
       using Perl to replace grantmc with gmc:

          $ knife list 'nodes/*' | knife xargs "perl -i -pe 's/grantmc/gmc'"

       or without quotes and the backslash escaped:

          $ knife list /nodes/\* | knife xargs "perl -i -pe 's/grantmc/gmc'"

       or by using the --pattern option:

          $ knife xargs --pattern '/nodes.*' "perl -i -pe 's/grantmc/gmc'"

AUTHOR

       Chef

                                            Chef 12.0                              KNIFE-XARGS(1)