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Full Discussion: read space filled file and replace text at specific position
Top Forums Shell Programming and Scripting read space filled file and replace text at specific position Post 302186461 by aigles on Thursday 17th of April 2008 09:55:55 AM
Old 04-17-2008
You can try something like that (not tested) :
Code:
awk -v new="$chrg" '
substr($0, 17, 3) == "RT3" {
   if (substr($0, 2651, 18) ~ /^[0-9]* *$/) 
      printf("%s%-18.18s%s\n", substr($0, 1, 2650), new, substr($0, 2669));
   next;
}
1
' inputfile

Jean-Pierre.
 

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LEARN ABOUT CENTOS

enum_station_info_flags

ENUM 
STATION_INFO_FL(9) 				     Actions and configuration					   ENUM STATION_INFO_FL(9)

NAME

       enum_station_info_flags - station information flags

SYNOPSIS

       enum station_info_flags {
	 STATION_INFO_INACTIVE_TIME,
	 STATION_INFO_RX_BYTES,
	 STATION_INFO_TX_BYTES,
	 STATION_INFO_LLID,
	 STATION_INFO_PLID,
	 STATION_INFO_PLINK_STATE,
	 STATION_INFO_SIGNAL,
	 STATION_INFO_TX_BITRATE,
	 STATION_INFO_RX_PACKETS,
	 STATION_INFO_TX_PACKETS,
	 STATION_INFO_TX_RETRIES,
	 STATION_INFO_TX_FAILED,
	 STATION_INFO_RX_DROP_MISC,
	 STATION_INFO_SIGNAL_AVG,
	 STATION_INFO_RX_BITRATE,
	 STATION_INFO_BSS_PARAM,
	 STATION_INFO_CONNECTED_TIME,
	 STATION_INFO_ASSOC_REQ_IES,
	 STATION_INFO_STA_FLAGS,
	 STATION_INFO_BEACON_LOSS_COUNT,
	 STATION_INFO_T_OFFSET,
	 STATION_INFO_LOCAL_PM,
	 STATION_INFO_PEER_PM,
	 STATION_INFO_NONPEER_PM,
	 STATION_INFO_RX_BYTES64,
	 STATION_INFO_TX_BYTES64
       };

CONSTANTS

       STATION_INFO_INACTIVE_TIME
	   inactive_time filled

       STATION_INFO_RX_BYTES
	   rx_bytes filled

       STATION_INFO_TX_BYTES
	   tx_bytes filled

       STATION_INFO_LLID
	   llid filled

       STATION_INFO_PLID
	   plid filled

       STATION_INFO_PLINK_STATE
	   plink_state filled

       STATION_INFO_SIGNAL
	   signal filled

       STATION_INFO_TX_BITRATE
	   txrate fields are filled (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)

       STATION_INFO_RX_PACKETS
	   rx_packets filled with 32-bit value

       STATION_INFO_TX_PACKETS
	   tx_packets filled with 32-bit value

       STATION_INFO_TX_RETRIES
	   tx_retries filled

       STATION_INFO_TX_FAILED
	   tx_failed filled

       STATION_INFO_RX_DROP_MISC
	   rx_dropped_misc filled

       STATION_INFO_SIGNAL_AVG
	   signal_avg filled

       STATION_INFO_RX_BITRATE
	   rxrate fields are filled

       STATION_INFO_BSS_PARAM
	   bss_param filled

       STATION_INFO_CONNECTED_TIME
	   connected_time filled

       STATION_INFO_ASSOC_REQ_IES
	   assoc_req_ies filled

       STATION_INFO_STA_FLAGS
	   sta_flags filled

       STATION_INFO_BEACON_LOSS_COUNT
	   beacon_loss_count filled

       STATION_INFO_T_OFFSET
	   t_offset filled

       STATION_INFO_LOCAL_PM
	   local_pm filled

       STATION_INFO_PEER_PM
	   peer_pm filled

       STATION_INFO_NONPEER_PM
	   nonpeer_pm filled

       STATION_INFO_RX_BYTES64
	   rx_bytes filled with 64-bit value

       STATION_INFO_TX_BYTES64
	   tx_bytes filled with 64-bit value

DESCRIPTION

       Used by the driver to indicate which info in struct station_info it has filled in during get_station or dump_station.

AUTHOR

       Johannes Berg <johannes@sipsolutions.net>
	   Author.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   ENUM STATION_INFO_FL(9)
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