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Re: Priniting coloumns of a file using tcl

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From: lew.pitc...@digitalfreehold.ca (Lew Pitcher)
Newsgroups: comp.unix.shell
Subject: Re: Priniting coloumns of a file using tcl
Date: Sat, 21 Aug 2021 18:17:58 -0000 (UTC)
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by: Lew Pitcher - Sat, 21 Aug 2021 18:17 UTC

On Sat, 21 Aug 2021 10:47:42 -0700, gpa...@gmail.com wrote:

> Dear Experts,
>
> I am able to print the required columns in an output file with awk command using following command in a .SH file
> awk '{ print $1,$2,$5,$6 }' input_file1 > output_file2
>
> I want achieve the same thing using tcl command
> But when i used following command in a .TCL, file it throws the following error
> exec awk '{ print $1,$2,$5,$6 }' input_file1 > output_file2
> can't read "1": no such variable
>
> Could you please give me a correct syntax for the above issue?

Not really. tcl is (now) a moderately obscure scripting language, and
while I have the book ("Tcl and the Tk toolkit" by John K. Ousterhout)
I don't /know/ the language.

Please realize that the argument handling and quoting requirements of
TCL are /not/ the same as posix shell, and you will have to do some work
to translate from shell to TCL. If you are working in TCL, you probably
need to read the book; "Tcl and the Tk toolkit" is the canonical book on
TCL, written by the author of the TCL language.

HTH
--
Lew Pitcher
"In Skills, We Trust"

Re: Priniting coloumns of a file using tcl

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From: chr...@mshome.net (Chris Elvidge)
Newsgroups: comp.unix.shell
Subject: Re: Priniting coloumns of a file using tcl
Date: Sat, 21 Aug 2021 19:49:18 +0100
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by: Chris Elvidge - Sat, 21 Aug 2021 18:49 UTC

On 21/08/2021 07:17 pm, Lew Pitcher wrote:
> On Sat, 21 Aug 2021 10:47:42 -0700, gpa...@gmail.com wrote:
>
>> Dear Experts,
>>
>> I am able to print the required columns in an output file with awk command using following command in a .SH file
>> awk '{ print $1,$2,$5,$6 }' input_file1 > output_file2
>>
>> I want achieve the same thing using tcl command
>> But when i used following command in a .TCL, file it throws the following error
>> exec awk '{ print $1,$2,$5,$6 }' input_file1 > output_file2
>> can't read "1": no such variable
>>
>> Could you please give me a correct syntax for the above issue?
>
> Not really. tcl is (now) a moderately obscure scripting language, and
> while I have the book ("Tcl and the Tk toolkit" by John K. Ousterhout)
> I don't /know/ the language.
>
> Please realize that the argument handling and quoting requirements of
> TCL are /not/ the same as posix shell, and you will have to do some work
> to translate from shell to TCL. If you are working in TCL, you probably
> need to read the book; "Tcl and the Tk toolkit" is the canonical book on
> TCL, written by the author of the TCL language.
>
> HTH
>

First result from a search:
https://stackoverflow.com/questions/16990116/using-awk-in-tcl-script

--
Chris Elvidge
England

Avoid strange women and temporary variables.

devel / comp.unix.shell / Re: Priniting coloumns of a file using tcl

Subject	Author
Re: Priniting coloumns of a file using tcl	Lew Pitcher
Re: Priniting coloumns of a file using tcl	Chris Elvidge