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Top Forums Shell Programming and Scripting how to delete two consecutive lines from the file Post 302513141 by aoussenko on Tuesday 12th of April 2011 12:29:00 PM
Old 04-12-2011
how to delete two consecutive lines from the file

Hi guys
I am deleting a unique line from the file and also need to remove the line above it which is NOT unique and servers as a record separator. Here is an example:
Code:
#
  101   803E     823F     8240
#
  102   755f     4F2A     4F2B
#
  290   747D     0926     0927
#
  999   8123     813E     8155
#
  206   807C     803F     8237

Deleting a unique line is not a problem, but I cannot figure out how to remove the line above it (starts with # ...)
May be someone already handle similar problem.
Thanks a lot for advice

Last edited by Franklin52; 04-12-2011 at 03:10 PM.. Reason: Please use code tags
 

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Tk_GetUid(3)						       Tk Library Procedures						      Tk_GetUid(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tk_GetUid, Tk_Uid - convert from string to unique identifier SYNOPSIS
#include <tk.h> Tk_Uid Tk_GetUid(string) ARGUMENTS
char *string (in) String for which the corresponding unique identifier is desired. _________________________________________________________________ DESCRIPTION
Tk_GetUid returns the unique identifier corresponding to string. Unique identifiers are similar to atoms in Lisp, and are used in Tk to speed up comparisons and searches. A unique identifier (type Tk_Uid) is a string pointer and may be used anywhere that a variable of type "char *" could be used. However, there is guaranteed to be exactly one unique identifier for any given string value. If Tk_GetUid is called twice, once with string a and once with string b, and if a and b have the same string value (strcmp(a, b) == 0), then Tk_GetUid will return exactly the same Tk_Uid value for each call (Tk_GetUid(a) == Tk_GetUid(b)). This means that variables of type Tk_Uid may be com- pared directly (x == y) without having to call strcmp. In addition, the return value from Tk_GetUid will have the same string value as its argument (strcmp(Tk_GetUid(a), a) == 0). KEYWORDS
atom, unique identifier Tk Tk_GetUid(3)
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