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Full Discussion: How to use shell command in awk ?
Top Forums Shell Programming and Scripting How to use shell command in awk ? Post 302292744 by Franklin52 on Sunday 1st of March 2009 03:11:16 PM
Old 03-01-2009
Quote:
Originally Posted by salman4u
thanks Franklin52,
the last one is the easiest for me haha! and can you please tell me how can i do the following in awk script file?

Code:
 for i in `ls`
 do
      echo $i
 done

Do you mean something like this?

Code:
awk 'BEGIN{
while ("ls" | getline var){
  #Do something with var...}
}
{...}'

Quote:
also why is this not working?
Code:
BEGIN{
system("date \"+%H-%M\"")|getline d
}
{

}
The system command returns the exit status of the command that was executed not the output of the command.

Regards
 

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LEARN ABOUT MOJAVE

lessecho

LESSECHO(1)						      General Commands Manual						       LESSECHO(1)

NAME

       lessecho - expand metacharacters

SYNOPSIS

       lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ...

DESCRIPTION

       lessecho  is  a program that simply echos its arguments on standard output.  But any metacharacter in the output is preceded by an "escape"
       character, which by default is a backslash.

OPTIONS

       A summary of options is included below.

       -ex    Specifies "x", rather than backslash, to be the escape char for metachars.  If x is "-", no escape char is used and  arguments  con-
	      taining metachars are surrounded by quotes instead.

       -ox    Specifies "x", rather than double-quote, to be the open quote character, which is used if the -e- option is specified.

       -cx    Specifies "x" to be the close quote character.

       -pn    Specifies "n" to be the open quote character, as an integer.

       -dn    Specifies "n" to be the close quote character, as an integer.

       -mx    Specifies "x" to be a metachar.  By default, no characters are considered metachars.

       -nn    Specifies "n" to be a metachar, as an integer.

       -fn    Specifies "n" to be the escape char for metachars, as an integer.

       -a     Specifies that all arguments are to be quoted.  The default is that only arguments containing metacharacters are quoted

SEE ALSO

       less(1)

AUTHOR

       This manual page was written by Thomas Schoepf <schoepf@debian.org>, for the Debian GNU/Linux system (but may be used by others).

       Send bug reports or comments to bug-less@gnu.org.

							     Version 487: 25 Oct 2016						       LESSECHO(1)
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