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Full Discussion: Script to change file contents line by line
Top Forums Shell Programming and Scripting Script to change file contents line by line Post 302282848 by angheloko on Monday 2nd of February 2009 03:39:00 AM
Old 02-02-2009
Hope this helps:

Code:
sed '
h
s/^.\{8\}\(.\).*/\1/
y/abcdefghijklmnopqrstuvwxyz/11111111111111111111111111/
G
s/\(.*\)\n\(.\{8\}\).\(.*$\)/\2\1\3/
h
s/^.\{13\}\(.\).*/\1/
y/abcdefghijklmnopqrstuvwxyz/44444444444444444444444444/
G
s/\(.*\)\n\(.\{13\}\).\(.*$\)/\2\1\3/' foo

Sample:
Code:
$ sed '
> h
> s/^.\{8\}\(.\).*/\1/
> y/abcdefghijklmnopqrstuvwxyz/11111111111111111111111111/
> G
> s/\(.*\)\n\(.\{8\}\).\(.*$\)/\2\1\3/
> h
> s/^.\{13\}\(.\).*/\1/
> y/abcdefghijklmnopqrstuvwxyz/44444444444444444444444444/
> G
> s/\(.*\)\n\(.\{13\}\).\(.*$\)/\2\1\3/' foo
line1 aa1a xx4x
line2 bb1b yy4y
line3 cc1c zz4z

Also, you can save this to a file:
Code:
h
s/^.\{8\}\(.\).*/\1/
y/abcdefghijklmnopqrstuvwxyz/11111111111111111111111111/
G
s/\(.*\)\n\(.\{8\}\).\(.*$\)/\2\1\3/
h
s/^.\{13\}\(.\).*/\1/
y/abcdefghijklmnopqrstuvwxyz/44444444444444444444444444/
G
s/\(.*\)\n\(.\{13\}\).\(.*$\)/\2\1\3/

And the run it by:

Code:
sed -f foo.sed foo

 

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LEARN ABOUT OSF1

iso-2022

iso2022(5)							File Formats Manual							iso2022(5)

NAME

       iso2022, iso-2022, ISO-2022 - A character encoding mechanism standardized by the International Standards Organization (ISO)

DESCRIPTION

       The ISO-2022 standard defines a mechanism for handling single-byte and multibyte characters. The standard specifies four classes of charac-
       ter sets: The 94-charset class, which contains character sets with 94 positions (single-byte characters).  Examples are the ASCII  and  JIS
       X0201 character sets.  The 96-charset class, which contains character sets with 96 positions (single-byte characters). Examples are the ISO
       Latin series of character sets.	The 94x94-charset class, which contains character sets with 94x94 positions (2-byte characters).  Examples
       are  the  GB  2312  and the CNS 11643 character sets.  The 96x96-charset class,	which contains character sets with 96x96 positions (2-byte
       characters).

       In the ISO-2022 standard, four registers, called G0, G1, G2 and G3, are used to reference a character set. Before a character  set  can	be
       used, the character set must be assigned, or designated, to one of these registers.  The designation of a character set is done by using an
       escape sequence in the following format:

       ESC [I] F

       In this format: Is an intermediate character that is used to designate a character set to one of the registers (G0, G1, G2, oR G3).   Is  a
       unique final character of a particular character set.

       The  designation of a character set, whose final character is F, to different registers is as follows: Designates a multibyte character set
       (94x94 or 96x96) to G0.	Designates a character set in the 94-charset class to G0.  Designates a character set in the 94-charset  class	to
       G1.   Designates  a  character  set in the 94-charset class to G2.  Designates a character set in the 94-charset class to G3.  Designates a
       character set in the 96-charset class to G1.  Designates a character set in the 96-charset class to G2.	Designates a character set in  the
       96-charset class to G3.

SEE ALSO

       Commands: locale(1)

       Others: ascii(5), i18n_intro(5), iso2022jp(5), l10n_intro(5)

																	iso2022(5)
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