knife-xargs(1) - The man page for the knife xargs subcommand.



  • KNIFE-XARGS(1)			  knife xargs			KNIFE-XARGS(1)
    
    
    
    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	occur‐
    	      rences 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 com‐
    	      mand, 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  com‐
    	      mands 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)
    

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