06-20-2003
Nawk user-defined function
HELP!!!! I am in an on-line shell programming class and have a question. Here is the data:
Mike Harrington
![Frown Smilie](https://www.unix.com/images/smilies/frown.gif)
510) 548-1278:250:100:175
Christian Dobbins
![Frown Smilie](https://www.unix.com/images/smilies/frown.gif)
408) 538-2358:155:90:201
Susan Dalsass
![Frown Smilie](https://www.unix.com/images/smilies/frown.gif)
206) 654-6279:250:60:50
(There are 12 contribuors total)
This database contains names, phone numbers and money contributions to a party campaigh for the past three months.
How do I write a user-defined function to return the average of all the contributions for a given month? The month will be passed in at the command line.
Thanks!!
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atf-sh
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)
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