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Full Discussion: awk pad 1 column with leading zero if char > 12
Top Forums Shell Programming and Scripting awk pad 1 column with leading zero if char > 12 Post 302968272 by SDohmen on Monday 7th of March 2016 08:11:43 AM
Old 03-07-2016
awk pad 1 column with leading zero if char > 12
Hello,

I got a question. I have several csv files with lots of data in it and for the first column i have EAN codes.

The problem that i am facing is that some of these codes have the leading 0 removed so they are 12 or less chars while a EAN code is (always?) 13 chars.

For this i used a sed script:
Code:
sed 's/\<[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]\>/0&/'

So far this works fine but i have no check on this to see how many lines have the extra 0 added. Is there a way to do this in awk and have a seperate file with the padded codes? Of course i need to save the rest of the data that is present in the files also.

Some sample code is below:
Code:
790069375798;94019;DIR-505/E;8;15.12;D-Link;CMT
4039784518926;94045;2.633-002.0;2;13.00;Kärcher;CMT
8806085027084;92798;CLT-W406/SEE;1;9.16;Samsung;CMT
5025232683680;94246;DMC-FZ200;10;251.26;Panasonic;CMT
885370404449;94571;3LR-00001;10;30.25;Microsoft;CMT

In above sample code are the first and last line missing the leading 0.
 

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cfsetospeed

cfspeed(3C)															       cfspeed(3C)

NAME

       cfgetospeed(), cfsetospeed(), cfgetispeed(), cfsetispeed() - tty baud rate functions

SYNOPSIS

DESCRIPTION

       These  functions set and get the input and output speed codes in the termios structure referenced by termios_p.	The termios structure con-
       tains these speed codes representing input and output baud rates as well as other terminal related parameters.  Setting the parameters on a
       terminal file does not become effective until is successfully called.

	      returns the output speed code from the
				  termios structure referenced by termios_p.

	      sets the output speed code in the
				  termios  structure  referenced by termios_p to speed.  The speed code for a baud rate of zero, is used to termi-
				  nate the connection.	If is specified, the modem control lines are no longer asserted,  which  normally  discon-
				  nects the line.

	      returns the input speed code from the
				  termios structure referenced by termios_p.

	      sets the input speed code in the
				  termios structure referenced by termios_p to speed.

RETURN VALUE

       returns the output speed code from the termios structure referenced by termios_p.

       returns the input speed code from the termios structure referenced by termios_p.

       and return zero upon successful completion.  Otherwise, they return -1 and set to indicate the error.

ERRORS

       and fail when the following condition is encountered:

	      [EINVAL]	     The value of speed is outside the range of possible speed codes as specified in

WARNINGS

       and can be used to set speed codes in the termios structure that are not supported by the terminal hardware.

SEE ALSO

       tcattribute(3C), thread_safety(5), termio(7).

STANDARDS CONFORMANCE

																       cfspeed(3C)
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