05-07-2010
Store date-of-birth as "1#7#0#2#" in file
Hello,
My input files are having header/body/footer. The first three digits finds whether the data is header/body/footer. For example,
010AAAAA 20100507 234KB BBBBBBBBBB_20100506.DAT
020CCCCC DDDDDDDDD 373983983 19750426 456.90 3983939EE
020FFFFF GGGGGGGGG 38938993H 19801102 783.33 DKJFDKJ983
020JJJJJJ KKKKKKKKKK 8666383L 398.90 DKJFKDLD993
030END OF FILE TOTAL 39839.22
From the above file, there is a date of birth in body (=020). Want to substitute the dateofbirth with # on every 2nd character. Like for ex, 19750426 is the date of birth but want to substiute as "1#7#0#2#". Want to do this same in all records in the file. If there is no value in date-of-birth then leave it as it is (refer 3rd record of 020). Can you please tell me how to do this in shell script?
The content of the file is,
From 1 to 3 = RECORD_TYPE
From 4 to 40 = NAME
From 41 to 80 = DESIGNATION
and so on.
-Nag
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NL(1) BSD General Commands Manual NL(1)
NAME
nl -- line numbering filter
SYNOPSIS
nl [-p] [-b type] [-d delim] [-f type] [-h type] [-i incr] [-l num] [-n format] [-s sep] [-v startnum] [-w width] [file]
DESCRIPTION
The nl utility reads lines from the named file or the standard input if the file argument is ommitted, applies a configurable line numbering
filter operation and writes the result to the standard output.
The nl utility treats the text it reads in terms of logical pages. Unless specified otherwise, line numbering is reset at the start of each
logical page. A logical page consists of a header, a body and a footer section; empty sections are valid. Different line numbering options
are independently available for header, body and footer sections.
The starts of logical page sections are signalled by input lines containing nothing but one of the following sequences of delimiter charac-
ters:
Line Start of
::: header
:: body
: footer
If the input does not contain any logical page section signalling directives, the text being read is assumed to consist of a single logical
page body.
The following options are available:
-b type Specify the logical page body lines to be numbered. Recognized type arguments are:
a Number all lines.
t Number only non-empty lines.
n No line numbering.
pexpr Number only those lines that contain the basic regular expression specified by expr.
The default type for logical page body lines is t.
-d delim Specify the delimiter characters used to indicate the start of a logical page section in the input file. At most two characters
may be specified; if only one character is specified, the first character is replaced and the second character remains
unchanged. The default delim characters are ``:''.
-f type Specify the same as -b type except for logical page footer lines. The default type for logical page footer lines is n.
-h type Specify the same as -b type except for logical page header lines. The default type for logical page header lines is n.
-i incr Specify the increment value used to number logical page lines. The default incr value is 1.
-l num If numbering of all lines is specified for the current logical section using the corresponding -b a, -f a or -h a option, spec-
ify the number of adjacent blank lines to be considered as one. For example, -l 2 results in only the second adjacent blank
line being numbered. The default num value is 1.
-n format Specify the line numbering output format. Recognized format arguments are:
ln Left justified.
rn Right justified, leading zeros suppressed.
rz Right justified, leading zeros kept.
The default format is rn.
-p Specify that line numbering should not be restarted at logical page delimiters.
-s sep Specify the characters used in separating the line number and the corresponding text line. The default sep setting is a single
tab character.
-v startnum Specify the initial value used to number logical page lines; see also the description of the -p option. The default startnum
value is 1.
-w width Specify the number of characters to be occupied by the line number; in case the width is insufficient to hold the line number,
it will be truncated to its width least significant digits. The default width is 6.
ENVIRONMENT
The LANG, LC_ALL, LC_CTYPE and LC_COLLATE environment variables affect the execution of nl as described in environ(7).
EXIT STATUS
The nl utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
jot(1), pr(1)
STANDARDS
The nl utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
The nl utility first appeared in AT&T System V Release 2 UNIX.
BUGS
Input lines are limited to LINE_MAX (2048) bytes in length.
BSD
January 26, 2005 BSD