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Full Discussion: How to change a number on a specific lines in a file with shell?
Top Forums Shell Programming and Scripting How to change a number on a specific lines in a file with shell? Post 302605985 by miriammiriam on Friday 9th of March 2012 09:26:35 AM
Old 03-09-2012
Data How to change a number on a specific lines in a file with shell?
Hello

My problem is that I want to change some specific numbers in a file. It is like,

Code:
 2009 10 3 2349 21.3 L  40.719  27.388 10.8  FRO  7 0.8 1.1LFRO 2.6CFRO 1.1LMAM1
 GAP=157        1.69       5.7     5.9  5.8  0.5405E+01  0.4455E+00  0.1653E+02E
 STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W  DIS CAZ7
 FRR1 SZ IP       2349 25.57                             153    0.7210 3.59  56
 FRR1 SE ES       2349 27.08                             153   -0.3510 3.59  56
 YNKM SZ IPG  0   2349 26.44   364.6e+01                 116    0.0510 11.9   4
 YNKM SZ ESG  1   2349 28.25     1.2e+02                 116   -1.85 7 11.9   4

 2009 10 4 1009  6.8 L  40.758  27.692 12.1  FRO 10 0.5 1.3LFRO 2.6CFRO 1.5LMAM1
 GAP=141        1.10       4.1     2.5  3.0  0.2367E+01  0.6141E+00 -0.3938E+01E
 STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W  DIS CAZ7
 FRR4 SZ IP       1009 11.85                             122    0.5610 11.7 100
 FRR4 SN ES       1009 13.99                             122   -0.5810 11.7 100
 MADM SZ IPG  0   1009 12.08   266.3e+01                 122    0.3110 11.8 192
 MADM SZ ESG  1   1009 14.83     8.4e+01                 122   -0.57 7 11.8 192
 FRR2 SZ IP       1009 12.65                             109    0.5810 18.0 295
 FRR2 SE ES       1009 15.26                             109   -0.6510 18.0 295
 FRR1 SZ IP       1009 14.15                              61    0.7710 22.9 264


 2009 10 5 0705 27.2 L  40.477  29.166  5.5  FRO  7 0.7 1.2LFRO 2.4CFRO 1.3LMAM1
 GAP=124        1.57       4.4     5.9  6.6  0.4955E+01  0.1054E+02 -0.1047E+02E
 STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W  DIS CAZ7
 ESKM SZ IP   0   0705 33.54     2.2e+01                  40   -0.0810 23.6 308
 ESKM SZ ES   1   0705 36.80     3.0e+01                  40   -1.48 7 23.6 308
 IGDM SZ IP   0   0705 33.88   201.4e+01                  40    0.1210 23.8 173

The number I want to edit is the number after FBO which is the 11th column in the header string.
(Ex: 2009 10 5 0705 27.2 L 40.477 29.166 5.5 FRO 7 0.7 1.2LFRO 2.4CFRO 1.3LMAM1)

All I need is to add 1.3 to that number. The line number between the blank lines vary.

I create two file one with "FRO number" and one with "FRO number+1.3" And tried to replace them with sed command.

Code:
sed 's/12.8  FRO/14.1  FRO/g' file1 > file2

but since the values repeated several time it went all the way wrong so that idea of mine became useless.

Any help would be appreciated...
Last edited by Corona688; 03-09-2012 at 11:46 AM.. Reason: Code tags for code please.
 

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LEARN ABOUT MOJAVE

isalpha

ISALPHA(3)						   BSD Library Functions Manual 						ISALPHA(3)

NAME

     isalpha -- alphabetic character test

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <ctype.h>

     int
     isalpha(int c);

DESCRIPTION

     The isalpha() function tests for any character for which isupper(3) or islower(3) is true.  The value of the argument must be representable
     as an unsigned char or the value of EOF.

     In the ASCII character set, this includes the following characters (preceded by their numeric values, in octal):

     101 ``A''	   102 ``B''	 103 ``C''     104 ``D''     105 ``E''
     106 ``F''	   107 ``G''	 110 ``H''     111 ``I''     112 ``J''
     113 ``K''	   114 ``L''	 115 ``M''     116 ``N''     117 ``O''
     120 ``P''	   121 ``Q''	 122 ``R''     123 ``S''     124 ``T''
     125 ``U''	   126 ``V''	 127 ``W''     130 ``X''     131 ``Y''
     132 ``Z''	   141 ``a''	 142 ``b''     143 ``c''     144 ``d''
     145 ``e''	   146 ``f''	 147 ``g''     150 ``h''     151 ``i''
     152 ``j''	   153 ``k''	 154 ``l''     155 ``m''     156 ``n''
     157 ``o''	   160 ``p''	 161 ``q''     162 ``r''     163 ``s''
     164 ``t''	   165 ``u''	 166 ``v''     167 ``w''     170 ``x''
     171 ``y''	   172 ``z''

RETURN VALUES

     The isalpha() function returns zero if the character tests false and returns non-zero if the character tests true.

COMPATIBILITY

     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The iswalpha() function should be used instead.

SEE ALSO

     ctype(3), isalnum_l(3), islower(3), isupper(3), iswalpha(3), ascii(7)

STANDARDS

     The isalpha() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD
								   July 17, 2005							       BSD
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