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Full Discussion: Escape ' in awk
Top Forums Shell Programming and Scripting Escape ' in awk Post 302568015 by agama on Tuesday 25th of October 2011 11:43:06 PM
Old 10-26-2011
Typically the command awk --version will generate the version of awk that you are using. If you are running on Solaris, it's wise to use nawk instead as the default awk in that environment is quite old and has lots of limitations.

The command uname -a will generate information about the OS you are running and the version.

Running echo $SHELL at the command prompt should give you the name of the shell you are using. To get the version you might might trying running the shell name with --version on the command line; modern versions of Korn shell and bash support this.

As for your problem...
What is generating the error message is in your printf() statement. You do not need the dollar sign in front of the variable name fstr. Past that, the bit of quoting that was suggested should work.

I'm not a fan of opening and closing quotes in the middle of an awk programme as that leads to maintenance problems. If it is just one string that you need to have single quotes appear in you could try this:

Code:
awk -v fstr="COMPRESS('Y','N')" '
{
    substr($1,len-3,4)~/_IND/
    len=length($1)
    if(substr($1,len-3,4)~/_IND/)
       printf("%-32s%-14s%-5s%-14s\n",$1,$2,$3, fstr, $4,$5,$6,$7)
 }
 ' tt.txt > out.log

Supplying the variable on the awk command, outside of the programme, allows you to use the single quotes within the double quotes, and it's easier to read (IMHO).
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LEARN ABOUT LINUX

shtool-path

SHTOOL-PATH.TMP(1)					      GNU Portable Shell Tool						SHTOOL-PATH.TMP(1)

NAME

       shtool-path - GNU shtool command dealing with shell path variables

SYNOPSIS

       shtool path [-s|--suppress] [-r|--reverse] [-d|--dirname] [-b|--basename] [-m|--magic] [-p|--path path] str [str ...]

DESCRIPTION

       This command deals with shell $PATH variables. It can find a program through one or more filenames given by one or more str arguments.  It
       prints the absolute filesystem path to the program displayed on "stdout" plus an exit code of 0 if it was really found.

OPTIONS

       The following command line options are available.

       -s, --suppress
	   Supress output. Useful to only test whether a program exists with the help of the return code.

       -r, --reverse
	   Transform a forward path to a subdirectory into a reverse path.

       -d, --dirname
	   Output the directory name of str.

       -b, --basename
	   Output the base name of str.

       -m, --magic
	   Enable advanced magic search for ""perl"" and ""cpp"".

       -p, --path path
	   Search in path. Default is to search in $PATH.

EXAMPLE

	#   shell script
	awk=`shtool path -p "${PATH}:." gawk nawk awk`
	perl=`shtool path -m perl`
	cpp=`shtool path -m cpp`
	revpath=`shtool path -r path/to/subdir`

HISTORY

       The GNU shtool path command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Apache. It was later taken
       over into GNU shtool.

SEE ALSO

       shtool(1), which(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-PATH.TMP(1)
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