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)