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Top Forums Shell Programming and Scripting Adding data from a file based on some condition Post 302887957 by Akshay Hegde on Wednesday 12th of February 2014 01:00:59 AM
Old 02-12-2014
Try :

Code:
[akshay@aix tmp]$ cat file
Feb 8 2014 15
Feb 10 2014 32
Feb 10 2014 32
Feb 12 2014 15
Feb 12 2014 15

Code:
[akshay@aix tmp]$ awk 'FNR==NR{A[$1 FS $2 FS $3]+=$4;next}{f=(($1 FS $2 FS $3) in A)}f{$4 = A[$1 FS $2 FS $3];delete A[$1 FS $2 FS $3]}f' file file
Feb 8 2014 15
Feb 10 2014 64
Feb 12 2014 30

---------- Post updated at 12:30 PM ---------- Previous update was at 12:27 PM ----------

If order doesn't matter try this

Code:
[akshay@aix tmp]$ awk '{A[$1 FS $2 FS $3]+=$4}END{for(i in A)print i,A[i]}' file
Feb 12 2014 30
Feb 10 2014 64
Feb 8 2014 15

 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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