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Full Discussion: write a script for this pattern...
Top Forums Shell Programming and Scripting write a script for this pattern... Post 302318519 by Rahulpict on Thursday 21st of May 2009 07:23:17 PM
Old 05-21-2009
write a script for this pattern...
I have a file say test.txt, data in that file is in format such that
1st column represents number of executions of particular function
2nd column represents total amount of time
3rd column represents function name

I want to get the poor/slow performing function from this file.
So, ideally what need to do is...
(1) divide the 2nd column by 1st column
(make sure there is no divide by ZERO error)
(2) sort the output in such a way that the record with greater output of step(1) is at top
(3) depending on this sorting display the result file.
result should not contain the division but should contain the original value.

example...

inputfile...

Code:
$ cat test.txt
3       (0 sec, 804275 nanosec)  abcd
721     (253 sec, 632655866 nanosec)     efgh
1873    (21 sec, 887264375 nanosec)      hijk
2006    (0 sec, 922300 nanosec)  lmhn
3       (0 sec, 3332 nanosec)    sjhfdf
2       (0 sec, 2367 nanosec)    dkfi
580     (0 sec, 2138703 nanosec)         dfhjf
44486   (0 sec, 858447770 nanosec)       oet
21102   (739 sec, 891470054 nanosec)     lldff
140     (0 sec, 90282 nanosec)   sfowe
123     0 sec, 324590 nanosec)  xjjv
8939    (0 sec, 337230856 nanosec)       asadj
19      (0 sec, 1455434 nanosec)         sahjdi
210     (0 sec, 89131 nanosec)   posdio
3       (0 sec, 3750149 nanosec)         jhd
873     (260 sec, 715043557 nanosec)     lppeuv
16      (0 sec, 212024 nanosec)  hjass
13668   (2 sec, 506391927 nanosec)       nnuua

-------------<end of file>------------------------

here... after division we see these are greater...
253/721 = 0.35090152
260/873 = 0.29782359

so output should look like...
721 (253 sec, 632655866 nanosec) efgh
873 (260 sec, 715043557 nanosec) lppeuv
.
.
Last edited by Yogesh Sawant; 06-28-2009 at 05:03 AM.. Reason: added code tags
 

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LEARN ABOUT FREEBSD

archive_entry_atime_nsec

ARCHIVE_ENTRY_TIME(3)					   BSD Library Functions Manual 				     ARCHIVE_ENTRY_TIME(3)

NAME

     archive_entry_atime, archive_entry_atime_nsec, archive_entry_atime_is_set, archive_entry_set_atime, archive_entry_unset_atime,
     archive_entry_birthtime, archive_entry_birthtime_nsec, archive_entry_birthtime_is_set, archive_entry_set_birthtime,
     archive_entry_unset_birthtime, archive_entry_ctime, archive_entry_ctime_nsec, archive_entry_ctime_is_set, archive_entry_set_ctime,
     archive_entry_unset_ctime, archive_entry_mtime, archive_entry_mtime_nsec, archive_entry_mtime_is_set, archive_entry_set_mtime,
     archive_entry_unset_mtime, -- functions for manipulating times in archive entry descriptions

LIBRARY

     Streaming Archive Library (libarchive, -larchive)

SYNOPSIS

     #include <archive_entry.h>

     time_t
     archive_entry_atime(struct archive_entry *a);

     long
     archive_entry_atime_nsec(struct archive_entry *a);

     int
     archive_entry_atime_is_set(struct archive_entry *a);

     void
     archive_entry_set_atime(struct archive_entry *a, time_t sec, long nanosec);

     void
     archive_entry_unset_atime(struct archive_entry *a);

     time_t
     archive_entry_birthtime(struct archive_entry *a);

     long
     archive_entry_birthtime_nsec(struct archive_entry *a);

     int
     archive_entry_birthtime_is_set(struct archive_entry *a);

     void
     archive_entry_set_birthtime(struct archive_entry *a, time_t sec, long nanosec);

     void
     archive_entry_unset_birthtime(struct archive_entry *a);

     time_t
     archive_entry_ctime(struct archive_entry *a);

     long
     archive_entry_ctime_nsec(struct archive_entry *a);

     int
     archive_entry_ctime_is_set(struct archive_entry *a);

     void
     archive_entry_set_ctime(struct archive_entry *a, time_t sec, long nanosec);

     void
     archive_entry_unset_ctime(struct archive_entry *a);

     time_t
     archive_entry_mtime(struct archive_entry *a);

     long
     archive_entry_mtime_nsec(struct archive_entry *a);

     int
     archive_entry_mtime_is_set(struct archive_entry *a);

     void
     archive_entry_set_mtime(struct archive_entry *a, time_t sec, long nanosec);

     void
     archive_entry_unset_mtime(struct archive_entry *a);

DESCRIPTION

     These functions create and manipulate the time fields in an archive_entry.  Supported time fields are atime (access time), birthtime (cre-
     ation time), ctime (last time an inode property was changed) and mtime (modification time).

     libarchive(3) provides a high-resolution interface.  The timestamps are truncated automatically depending on the archive format (for archiv-
     ing) or the filesystem capabilities (for restoring).

     All timestamp fields are optional.  The XXX_unset() functions can be used to mark the corresponding field as missing.  The current state can
     be queried using XXX_is_set().  Unset time fields have a second and nanosecond field of 0.

SEE ALSO

     archive(3), archive_entry(3)

HISTORY

     The libarchive library first appeared in FreeBSD 5.3.

AUTHORS

     The libarchive library was written by Tim Kientzle <kientzle@acm.org>.

BSD
								 February 2, 2012							       BSD
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