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Top Forums Shell Programming and Scripting Copying characters on each line in a file Post 302989256 by rbatte1 on Tuesday 10th of January 2017 10:34:59 AM
Old 01-10-2017
Welcome dmm,

I have a few to questions pose in response first:-
  • Is this homework/assignment? There are specific forums for these. I know you've been asked before, but you didn't really answer.
  • What have you tried so far?
  • What output/errors do you get?
  • What OS and version are you using?
  • What are your preferred tools? (C, shell, perl, awk, etc.)
  • What logical process have you considered? (to help steer us to follow what you are trying to achieve)
  • Is speed important, or is this a one-off? Shell commands might be simpler to knock together, but slower for long-term use.
Most importantly, What have you tried so far?

There are probably many ways to achieve most tasks, so giving us an idea of your style and thoughts will help us guide you to an answer most suitable to you so you can adjust it to suit your needs in future.


We're all here to learn and getting the relevant information will help us all.


Kind regards,
Robin
 

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copystr(9r)															       copystr(9r)

NAME
copystr - General: Copies a null-terminated character string with a specified limit SYNOPSIS
int copystr( char *s1, char *s2, u_int maxlength, u_int *ncopiedaddr ); ARGUMENTS
Specifies a pointer to a string (an array of characters terminated by a null character). Specifies a pointer to a buffer of at least maxlength characters. Specifies the maximum number of characters to copy. Specifies the address of an integer to receive the number of copied characters. DESCRIPTION
The copystr routine copies string s1 to the buffer pointed to by s2. The routine stops after copying a null character or after copying maxlength characters, whichever comes first. The s2 buffer is not padded with null characters to maxlength. The copystr routine returns the number of characters copied in the location pointed to by ncopiedaddr. Note that the character size is 1 byte. RETURN VALUES
Upon successful completion, copystr returns the value 0 (zero). Otherwise, it can return the following error: The string length, s1, exceeds the maximum number of characters, maxlength. SEE ALSO
Routines: bcopy(9r), blkclr(9r), ovbcopy(9r), strcpy(9r), strncpy(9r) copystr(9r)
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