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Special Forums UNIX Desktop Questions & Answers problem while storing the output of awk to variable Post 302267398 by matrixmadhan on Friday 12th of December 2008 09:25:07 AM
Old 12-12-2008
Code:
SIZE=`ls -lrt | awk 'END{ print $5 }'`
echo $SIZE

ls -lrt => display files with file that is last modified at the end
awk 'END{ print $5 }' => list only the file size of the last displayed file

SIZE => will contain the size of the file that is modified latest
 

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TRUNCATE(1)							   User Commands						       TRUNCATE(1)

NAME
truncate - shrink or extend the size of a file to the specified size SYNOPSIS
truncate OPTION... FILE... DESCRIPTION
Shrink or extend the size of each FILE to the specified size A FILE argument that does not exist is created. If a FILE is larger than the specified size, the extra data is lost. If a FILE is shorter, it is extended and the extended part (hole) reads as zero bytes. Mandatory arguments to long options are mandatory for short options too. -c, --no-create do not create any files -o, --io-blocks treat SIZE as number of IO blocks instead of bytes -r, --reference=RFILE base size on RFILE -s, --size=SIZE set or adjust the file size by SIZE bytes --help display this help and exit --version output version information and exit The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow- ers of 1000). SIZE may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round down to multiple of, '%' round up to multiple of. AUTHOR
Written by Padraig Brady. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report truncate translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
dd(1), truncate(2), ftruncate(2) Full documentation at: <http://www.gnu.org/software/coreutils/truncate> or available locally via: info '(coreutils) truncate invocation' GNU coreutils 8.28 January 2018 TRUNCATE(1)
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