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Full Discussion: (g)awk how to preseve white spaces (FS characters) or read a right subpart of $0?
Top Forums Shell Programming and Scripting (g)awk how to preseve white spaces (FS characters) or read a right subpart of $0? Post 302338617 by shri_nath on Tuesday 28th of July 2009 11:44:09 AM
Old 07-28-2009
Hi radoulov,

Quote:
Originally Posted by radoulov
You know that the filename will be after the 7th field,
so you could do something like this:

Code:
gawk --posix 'NR > 2 && !/\/$/ {
  sub(/([^ \t]+[ \t]+){7}/,"")
  print
  }' infile

This is the best answer. I had also come to the same pattern, but albeit separately for each of the first seven fields. Your answer is even better. I am going to change it a little bit as follows:

Code:
     gsub(/^([^ \t]+[ \t]+){6}[^ \t]+ /, "", fileName);

for the obvious reason that fileName itself could start with a white space!
Could you suggest me a pattern that would also get rid of the very last (one or zero) characters from these: />*|@= ?

I tried
Code:
    gsub(/^([^ \t]+[ \t]+){6}[^ \t]+ (.+)[\/\>\*\|\@\=]{0,1}$/, "\\1", fileName);

but that did not work and so I am having the above left most seven fields removed first and then followed by another to gsub to remove the (zero or one) of those last charcters.
Thanks.

-sn
 

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LEARN ABOUT OSX

source

source(n)						       Tcl Built-In Commands							 source(n)

__________________________________________________________________________________________________________________________________________________

NAME

       source - Evaluate a file or resource as a Tcl script

SYNOPSIS

       source fileName

       source -encoding encodingName fileName													   |
_________________________________________________________________

DESCRIPTION

       This  command takes the contents of the specified file or resource and passes it to the Tcl interpreter as a text script.  The return value
       from source is the return value of the last command executed in the script.  If an error occurs in evaluating the contents  of  the  script
       then  the source command will return that error.  If a return command is invoked from within the script then the remainder of the file will
       be skipped and the source command will return normally with the result from the return command.

       The end-of-file character for files is "32" (^Z) for all platforms.  The source command will  read  files  up  to  this  character.   This
       restriction  does  not  exist for the read or gets commands, allowing for files containing code and data segments (scripted documents).	If
       you require a "^Z" in code for string comparison, you can use "32" or "u001a", which will be safely substituted by the  Tcl  interpreter
       into "^Z".

       The  -encoding  option  is  used  to specify the encoding of the data stored in fileName.  When the -encoding option is omitted, the system |
       encoding is assumed.

EXAMPLE

       Run the script in the file foo.tcl and then the script in the file bar.tcl:
	      source foo.tcl
	      source bar.tcl
       Alternatively:
	      foreach scriptFile {foo.tcl bar.tcl} {
		 source $scriptFile
	      }

SEE ALSO

       file(n), cd(n), encoding(n), info(n)

KEYWORDS

       file, script

Tcl																	 source(n)
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