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Full Discussion: [awk] find pattern, change next two lines
Top Forums Shell Programming and Scripting [awk] find pattern, change next two lines Post 302897748 by Yoda on Tuesday 15th of April 2014 05:12:42 PM
Old 04-15-2014
Quote:
Originally Posted by origamisven
Thanks a lot, Yoda, can you explain the syntax to me? I don't want to die stupid.
Sure.
Code:
awk '
        # Look for pattern VEL in each record
        /VEL/ {
                # if found set variable c value to 3
                c = 3
        }
        # For each subsequent records decrement variable c value by 1 and check if it is >= 1
        # This condition is to replace next 2 records as you requested
        c-- >= 1 {
                # Substitute SOL with VEL
                sub ( "SOL", "VEL")
        }
        # 1 == true, default awk operation is print the record
        1
' file

This User Gave Thanks to Yoda For This Post:
origamisven
 

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libipmiconsole

libipmiconsole(3)						  System Commands						 libipmiconsole(3)

NAME

       libipmiconsole - IPMI SOL library

SYNOPSIS

       #include <ipmiconsole.h>

       int ipmiconsole_engine_init(unsigned int thread_count, unsigned int debug_flags);

       int ipmiconsole_engine_submit(ipmiconsole_ctx_t c, Ipmiconsole_callback callback, void *callback_arg);

       int ipmiconsole_engine_submit_block(ipmiconsole_ctx_t c);

       void ipmiconsole_engine_teardown(int cleanup_sol_sessions);

       ipmiconsole_ctx_t  ipmiconsole_ctx_create(char  *hostname,  struct ipmiconsole_ipmi_config *ipmi_config, struct ipmiconsole_protocol_config
       *protocol_config);

       int ipmiconsole_ctx_errnum(ipmiconsole_ctx_t c);

       char *ipmiconsole_ctx_strerror(int errnum);

       ipmiconsole_ctx_status_t ipmiconsole_ctx_status(ipmiconsole_ctx_t c);

       int ipmiconsole_ctx_fd(ipmiconsole_ctx_t c);

       int ipmiconsole_ctx_generate_break(ipmiconsole_ctx_t c);

       int ipmiconsole_ctx_destroy(ipmiconsole_ctx_t c);

DESCRIPTION

       Libipmiconsole implements a high level serial-over-lan (SOL) API for remote console access. It can be used to establish and manage multiple
       IPMI  2.0 SOL sessions. The goal of this library is to abstract away all of the underlying IPMI/SOL details away from the user into a rela-
       tively simple file descriptor interface.

FILES

       /usr/include/ipmiconsole.h

REPORTING BUGS

       Report bugs to <freeipmi-users@gnu.org> or <freeipmi-devel@gnu.org>.

COPYRIGHT

       Copyright (C) 2007-2012 Lawrence Livermore National Security, LLC.
       Copyright (C) 2006-2007 The Regents of the University of California.

       This library is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as  published	by
       the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

SEE ALSO

       ipmiconsole(8)

       http://www.gnu.org/software/freeipmi/

libipmiconsole 1.1.5						    2012-06-15							 libipmiconsole(3)
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