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Full Discussion: How to delete initial N bytes from the starting of the file using sed?
Top Forums Shell Programming and Scripting How to delete initial N bytes from the starting of the file using sed? Post 302146256 by Perderabo on Monday 19th of November 2007 07:26:29 PM
Old 11-19-2007
sed 's/^\(.\)\{11\}//g' forsed
will delete the first 11 characters from each line

sed '1s/^\(.\)\{11\}//g' forsed
will delete the first 11 characters from the first line but the first line must contain 11 or more characters

Ignoring line boundaries will be hard using sed. To ignore line boundaries and simply delete the first n characters you might want to consider switching to dd.
 

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LEARN ABOUT DEBIAN

strspn

STRSPN(3)						     Linux Programmer's Manual							 STRSPN(3)

NAME

       strspn, strcspn - search a string for a set of bytes

SYNOPSIS

       #include <string.h>

       size_t strspn(const char *s, const char *accept);

       size_t strcspn(const char *s, const char *reject);

DESCRIPTION

       The strspn() function calculates the length (in bytes) of the initial segment of s which consists entirely of bytes in accept.

       The strcspn() function calculates the length of the initial segment of s which consists entirely of bytes not in reject.

RETURN VALUE

       The strspn() function returns the number of bytes in the initial segment of s which consist only of bytes from accept.

       The strcspn() function returns the number of bytes in the initial segment of s which are not in the string reject.

CONFORMING TO

       SVr4, 4.3BSD, C89, C99.

SEE ALSO

       index(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3), strsep(3), strstr(3), strtok(3), wcscspn(3), wcsspn(3)

COLOPHON

       This  page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

								    2012-05-10								 STRSPN(3)
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