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Full Discussion: count lines of file
Top Forums Shell Programming and Scripting count lines of file Post 302120473 by radoulov on Wednesday 6th of June 2007 03:05:06 PM
Old 06-06-2007
Based on c.u.s. post.

Code:
$ uname -a
SunOS xxxxx 5.9 Generic_118558-36 sun4u sparc SUNW,Sun-Fire-V490
$ echo $BASH_VERSION
2.05.0(1)-release
$ du -k FILE1
124652  FILE1
$ type wc
wc is hashed (/usr/bin/wc)
$ time wc -l FILE1
 1475071 FILE1

real    0m5.519s
user    0m1.300s
sys     0m0.490s
$ # grep -c ^ will give you wrong numbers (one to high) 
$ # depending on whether the last line is incomplete or not.
$ time grep -c ^ FILE1 
1475071

real    0m1.411s
user    0m1.050s
sys     0m0.360s
$ /usr/dt/bin/dtksh
$ print ${.sh.version}
Version M-12/28/93d
$ type wc
wc is a shell builtin version of /bin/wc
$ time wc -l FILE1
 1475071 FILE1

real    0m1.36s
user    0m0.95s
sys     0m0.40s
$ # but ...
$ du -k FILE2
3314730 FILE2
$ wc -l FILE2
/usr/dt/bin/dtksh: wc: FILE2: cannot open [Value too large for defined data type]


Last edited by radoulov; 06-06-2007 at 04:22 PM..
 

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COMM(1) 							   User Commands							   COMM(1)

NAME
comm - compare two sorted files line by line SYNOPSIS
comm [OPTION]... FILE1 FILE2 DESCRIPTION
Compare sorted files FILE1 and FILE2 line by line. When FILE1 or FILE2 (not both) is -, read standard input. With no options, produce three-column output. Column one contains lines unique to FILE1, column two contains lines unique to FILE2, and column three contains lines common to both files. -1 suppress column 1 (lines unique to FILE1) -2 suppress column 2 (lines unique to FILE2) -3 suppress column 3 (lines that appear in both files) --check-order check that the input is correctly sorted, even if all input lines are pairable --nocheck-order do not check that the input is correctly sorted --output-delimiter=STR separate columns with STR --total output a summary -z, --zero-terminated line delimiter is NUL, not newline --help display this help and exit --version output version information and exit Note, comparisons honor the rules specified by 'LC_COLLATE'. EXAMPLES
comm -12 file1 file2 Print only lines present in both file1 and file2. comm -3 file1 file2 Print lines in file1 not in file2, and vice versa. AUTHOR
Written by Richard M. Stallman and David MacKenzie. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report comm 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
join(1), uniq(1) Full documentation at: <http://www.gnu.org/software/coreutils/comm> or available locally via: info '(coreutils) comm invocation' GNU coreutils 8.28 January 2018 COMM(1)
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