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Full Discussion: Append Multiple files with file name in the beginning of line
Top Forums Shell Programming and Scripting Append Multiple files with file name in the beginning of line Post 302880332 by Don Cragun on Thursday 19th of December 2013 01:13:34 AM
Old 12-19-2013
Quote:
Originally Posted by ctsgnb
... ... ...
Code:
grep . {a,b}.txt >c.txt

... ... ...
Note that if an input file contains any empty lines (i.e., just a <newline> character), they will not appear in the output produced by the above command.

However, the command:
Code:
grep '^' *.txt > output

should do what was requested. (Note that if the input files are matched by the pattern *.txt, the output file must not also match that pattern unless it is located in a different directory so the input file pattern won't match the output file's pathname.
This User Gave Thanks to Don Cragun For This Post:
ctsgnb
 

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LEARN ABOUT BSD

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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