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Full Discussion: Length of a fixed width file
Top Forums UNIX for Dummies Questions & Answers Length of a fixed width file Post 302823139 by rveri on Wednesday 19th of June 2013 01:48:34 AM
Old 06-19-2013
Amrutha24,

Code:
wc -L 

-L, --max-line-length
              print the length of the longest line

and the awk code you are using are not the same. This code will print the length of the first line only.
Code:
awk '{print length;exit}'





To print the max length of any line of the file you can use this with awk :

Code:
awk '{if(max=="") {max=length($0)};if(length($0)>max){max=length($0)}}END{print max}'  file

 

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WC(1)								   User Commands							     WC(1)

NAME
wc - print newline, word, and byte counts for each file SYNOPSIS
wc [OPTION]... [FILE]... wc [OPTION]... --files0-from=F DESCRIPTION
Print newline, word, and byte counts for each FILE, and a total line if more than one FILE is specified. With no FILE, or when FILE is -, read standard input. A word is a non-zero-length sequence of characters delimited by white space. -c, --bytes print the byte counts -m, --chars print the character counts -l, --lines print the newline counts --files0-from=F read input from the files specified by NUL-terminated names in file F; If F is - then read names from standard input -L, --max-line-length print the length of the longest line -w, --words print the word counts --help display this help and exit --version output version information and exit AUTHOR
Written by Paul Rubin and David MacKenzie. REPORTING BUGS
Report wc bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> Report wc translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2010 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
The full documentation for wc is maintained as a Texinfo manual. If the info and wc programs are properly installed at your site, the com- mand info coreutils 'wc invocation' should give you access to the complete manual. GNU coreutils 8.5 February 2011 WC(1)
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