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Full Discussion: redirect output into the middle of a file
Top Forums UNIX for Dummies Questions & Answers redirect output into the middle of a file Post 302381530 by jim mcnamara on Friday 18th of December 2009 03:10:14 PM
Old 12-18-2009
for really large files:
Code:
start=12443 
awk -v ins=$(< filetoinsert) -v start=$start '{if(FNR==start) {print; print ins}
                                                           else {print} }' inputfile > newfile

 

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LEARN ABOUT CENTOS

scsi_start

SCSI_START(8)							     SG3_UTILS							     SCSI_START(8)

NAME

       scsi_start - start one or more SCSI disks

SYNOPSIS

       scsi_start [--help] [--verbose] [--wait] DEVICE [DEVICE]*

DESCRIPTION

       This bash shell script calls the sg_start utility on each given DEVICE. The purpose is to spin up (start) each given DEVICE.

OPTIONS

       Arguments to long options are mandatory for short options as well.

       -h, --help
	      print out the usage message then exit.

       -v, --verbose
	      increase level or verbosity.

       -w, --wait
	      wait for the spin up (start) on each given DEVICE to complete.  The default action is to do each start in immediate mode.

NOTES

       If a large number of disks are spun up at the same time (i.e. without the --wait option) then the power supply may be overloaded.

EXIT STATUS

       The  exit  status of this script is 0 when it is successful. Otherwise the exit status is that of the last sg_start utility called. See the
       sg3_utils(8) man page.

AUTHORS

       Written by D. Gilbert

COPYRIGHT

       Copyright (C) 2009-2013 Douglas Gilbert
       This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A  PARTICULAR  PUR-
       POSE.

SEE ALSO

       sg_start (sg3_utils)

sg3_utils-1.36							     May 2013							     SCSI_START(8)
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