Unix find and head command help Post: 302627975

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Homework and Emergencies Homework & Coursework Questions Unix find and head command help Post 302627975 by methyl on Sunday 22nd of April 2012 04:23:55 PM

04-22-2012

Registered User

This an interesting puzzle because I for one cannot come up with a simple solution which works on all modern unix and Linux O/S (the O/S was not stated) ... and which uses "find .... -exec".

In the commercial world we would use a construct which lets us do a sequence of commands within a do-done loop:

Code:

find /home/yourname/UnixCourse/ -type f -name "*.txt" -print | while read filename
do
     echo "${filename}"
     head -1 "${filename}"
done

I realise that this does not match you requirement because there is no "-exec" on the "find".

Ignoring those versions of the "find" command which support more than one command with "-exec", one must look at what "-exec" could run.
Hmm it could run a simple Shell script which displayed the filename and then displayed the first line of the file in question.
Just an idea, other posters may have better ideas.

Last edited by methyl; 04-22-2012 at 05:30 PM.. Reason: typos

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KNIFE-EXEC(1)							    Chef Manual 						     KNIFE-EXEC(1)

NAME

       knife-exec - Run user scripts using the Chef API DSL

SYNOPSIS

       knife exec (options)

       -E, --exec CODE
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DESCRIPTION

       knife exec runs arbitrary ruby scripts in a context similar to that of the shef(1) DSL. See the shef documentation for a description of the
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EXAMPLES

       Make an API call against an arbitrary endpoint
	      knife exec -E 'api.get("nodes/fluke.localdomain/cookbooks")'
	      => list of cookbooks for the node fluke.localdomain

       Remove the role obsolete from all nodes
	      knife exec -E 'nodes.transform(:all){|n| n.run_list.delete("role[obsolete]")}'

       Generate the expanded run list for hosts in the webserver role
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       shef(1)

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Chef 10.12.0							     June 2012							     KNIFE-EXEC(1)