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
510) 548-1278:250:100:175
Christian Dobbins
408) 538-2358:155:90:201
Susan Dalsass
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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CHSH(1) User Commands CHSH(1)
NAME
chsh - change login shell
SYNOPSIS
chsh [options] [LOGIN]
DESCRIPTION
The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
the login shell for her own account; the superuser may change the login shell for any account.
OPTIONS
The options which apply to the chsh command are:
-h, --help
Display help message and exit.
-s, --shell SHELL
The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.
If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.
NOTE
The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
back to its original value.
FILES
/etc/passwd
User account information.
/etc/shells
List of valid login shells.
/etc/login.defs
Shadow password suite configuration.
SEE ALSO
chfn(1), login.defs(5), passwd(5).
User Commands 06/24/2011 CHSH(1)