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Full Discussion: Grep first n lines from each file
Top Forums UNIX for Beginners Questions & Answers Grep first n lines from each file Post 303046262 by RudiC on Tuesday 28th of April 2020 04:27:21 PM
Old 04-28-2020
Unfortunately, awk doesn't have the --recursive option that grep provides. But we can resort to bash's "brace expansion" for sweeping across the directory tree and "extended globbing" ("extended pattern matching"). Try
Code:
$ awk -v"LINE=$n" 'FNR <= LINE'  {*,*/*,*/*/*}.@(org|texi)

and adapt the */*/* globs to taste. If you want the filename printed, extend to
Code:
$ awk -vLINE=$n 'FNR==1 {print FILENAME} FNR <= LINE'  {*,*/*,*/*/*}.@(org|texi)

, and you even check the n lines for your pattern:
Code:
$ awk -vLINE=$n 'FNR==1 {print FILENAME} /Abstract/ && FNR <= LINE'  {*,*/*,*/*/*}.@(org|texi)

This User Gave Thanks to RudiC For This Post:
vgersh99
 

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LEARN ABOUT DEBIAN

gfxattr

GFXATTR(1)																GFXATTR(1)

NAME

       gfxattr - Manipulate extended attributes in Gfarm file system

SYNOPSIS

       gfxattr [ -s | -g | -l | -r ] [ -x ] [ -c | -m ] [ -f xattrfile ] file [ xattrname ]

DESCRIPTION

       gfxattr	manipulates  extended  attributes and XML extended attributes of a specified file.  An extended attribute consists of an attribute
       name and an attribute value, which are arbitrary strings.  An XML extended attribute is an  extended  attribute	having	an  XML  attribute
       value.  Since XML extended attributes have a different name space from extended attributes, the same attribute name can be used.

       When  the -x option is specified, XML extended attributes are manipulated.  It is possible to search XML extended attributes by XPath query
       using gffindxmlattr command.

       All files and directories in Gfarm file system can keep extended attributes.  When removing a file or directory,  the  associated  extended
       attributes are also removed.

       Either -s, -g, -l, or -r option should be specified.

OPTIONS

       -s     sets  a  new value with an extended attribute xattrname for a specified file.  With the -f option, the value can be specified by the
	      file xattrfile instead of by the standard input.	When neither -c nor -m option is specified, the extended attribute is  overwritten
	      if it is already set.

       -g     reads a value with an extended attribute xattrname for a specified file.

       -l     display a list of extended attributes for a specified file.

       -r     removes a extended attribute xattrname for a specified file.

       -x     manipulates XML extended attributes.

       -c     sets a new extended attribute if it is not set.  This option is used with the -s option.

       -m     modifies the extended attribute if there it is.  This option is used with the -s option.

       -f xattrfile
	      With  the  -s  option,  reads  an  extended  attribute from the specified xattrfile instead of from the standard input.  With the -g
	      option, writes the extended attribute to the specified xattrfile instead of to the standard output.

       -?     displays usage.

SEE ALSO

       gffindxmlattr(1)

Gfarm								  18 August 2009							GFXATTR(1)
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