Provided by: clustershell_1.8.4-2_all bug


       clubak - format output from clush/pdsh-like output and more


       clubak [ OPTIONS ]


       clubak formats text from standard input containing lines of the form "node:output".  It is
       fully backward compatible with dshbak(1) but provides additional features.  For  instance,
       clubak always displays its results sorted by node/nodeset.

       You  do  not  need to use clubak when using clush(1) as all output formatting features are
       already included in. It is provided for other usages, like post-processing results of  the
       form "node:output".

       Like  clush(1),  clubak  uses  the ClusterShell.MsgTree module of the ClusterShell library
       (see pydoc ClusterShell.MsgTree).


       clubak should be started with connected standard input.


              show clubak version number and exit

       -b, -c gather nodes with same output (-c is provided for dshbak(1) compatibility)

       -d, --debug
              output more messages for debugging purpose

       -L     disable header block and order output by nodes

       -r, --regroup
              fold nodeset using node groups

       -s GROUPSOURCE, --groupsource=GROUPSOURCE
              optional groups.conf(5) group source to use

              use alternate config file for groups.conf(5)

       -G, --groupbase
              do not display group source prefix (always @groupname)

       -S SEPARATOR, --separator=SEPARATOR
              node / line content separator string (default: :)

       -F, --fast
              faster but memory hungry mode (preload all messages per node)

       -T, --tree
              message tree trace mode; switch to  enable  ClusterShell.MsgTree  trace  mode,  all
              keys/nodes  being  kept for each message element of the tree, thus allowing special
              output gathering

              clush can use NO_COLOR, CLICOLOR and CLICOLOR_FORCE environment variables.  --color
              command  line  option  always takes precedence over environment variables. NO_COLOR
              takes precedence over CLICOLOR_FORCE which takes precedence over CLICOLOR.  --color
              tells  whether  to  use  ANSI colors to surround node or nodeset prefix/header with
              escape sequences to display them in color on  the  terminal.  WHENCOLOR  is  never,
              always  or auto (which use color if standard output refers to a terminal). Color is
              set to [34m (blue foreground text) and cannot be modified.

       --diff show diff between gathered outputs


       An exit status of zero indicates success of the clubak command.


       1. clubak can be used to gather some recorded clush(1) results:

       Record clush(1) results in a file:
              # clush -w node[1-7] uname -r >/tmp/clush_output
              # clush -w node[32-159] uname -r >>/tmp/clush_output

       Display file gathered results (in line-mode):
              # clubak -bL </tmp/clush_output

       2. Another example, iterate  over  node*  text  files  in  current  directory  and  gather
          characters count for all of them:
             # find -name "node*" -exec wc -c {} ; | awk '{ gsub("./","",$2); print $2": "$1 }' | clubak -bL
             node[1,3]: 7
             node2: 9


       cluset(1), clush(1), nodeset(1), groups.conf(5).


       Use the following URL to submit a bug report or feedback:


       Stephane Thiell <>


       GNU Lesser General Public License version 2.1 or later (LGPLv2.1+)