Hi all,
I am an amateur k shell scripter and came across something I need clarification on.
while ; do
various commands
done
What is the "" condition testing for in the above while loop?
THx,
Bookoo (5 Replies)
I'm trying to create a loop that will prompt the user for 15 values, not forcing them to enter all 15. If the user enters through one or more of the prompts the null value needs to be converted to 0, otherwise set the parameter = to the value entered:
ex.
Please enter file no #1: 17920
... (4 Replies)
Hello,
I'm not sure if this is more appropriate for the 'unix for dummies' or the 'unix for experts' forum because I'm new to this forum and this is the second topic I've discussed, but if you could let me know which one was more appropriate for something like this, please do!
So in tr (an... (2 Replies)
Hi All
I have some directories on our server which are containing .csv files. i need to print value of cell "B2" from those csv files. Please advise.
I have tried head command as example: head -2 */Book_Collection_Report_1_-_Collection_Requests_trials.csv | sed -n "3p" | awk -F","... (4 Replies)
Hi All,
I am very new to Shell scripting. I read basic scripting manual. But i didn't understand the code. Please tell the meaning of the below code:
while getopts "F:f:R:r:C:c:" opt 2>/dev/null
do
case ${opt} in
F|f) FREQUENCY_MODE=$OPTARG;;
... (3 Replies)
Hi All,
Please find my problem below:
I have a file at two different nodes dev and test
1st find> find /u/dev/local/abc -name ab.dat
--Since this file can be in several sub directories
2nd find> find /u/test/local/abc -name ab.dat
I find my 1st find result and do compare with 2nd... (5 Replies)
I think both write at the end of the file ......
but is there a sharp difference between those 2 instruction .....
thank you
this is my 3rd question today forgive me :D (1 Reply)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
In this script you will take a directory as input from the user and change the end of line sequence from a Unix... (1 Reply)
Why wont my for statements work? Im trying to get this script to swich to a user an if you put in a start/stop/or restart paramater to do just that for each user. I commented out the actual start/stop actions to test it just by using echos and not do anything hasty in the environment but it... (0 Replies)
In the awk I am trying to subtract the difference $3-$2 of each matching $4 before the first _ (underscore) and print that value in $13.
I think the awk will do that, but added comments. What I am not sure off is how to add a line or lines that will add sum each matching $13 value and put it in... (2 Replies)
Discussion started by: cmccabe
2 Replies
LEARN ABOUT DEBIAN
apf
APF(1) General Commands Manual APF(1)NAME
apf - easy iptables based firewall system
SYNOPSIS
apf
DESCRIPTION
This manual page documents briefly the apf command. This manual page was written for the Debian distribution because the original program
does not have a manual page.
Advanced Policy Firewall (APF) is an iptables (netfilter) based firewall system designed around the essential needs of today's Internet
deployed servers and the unique needs of custom deployed Linux installations. The configuration of APF is designed to be very informative
and present the user with an easy to follow process, from top to bottom of the configuration file. The management of APF on a day-to-day
basis is conducted from the command line with the 'apf' command, which includes detailed usage information and all the features one would
expect from a current and forward thinking firewall solution.
OPTIONS
apf follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below.
-s|--start
load all firewall rules
-r|--restart
stop (flush) & reload firewall rules
-l|--list
list all firewall rules
-t|--status
output firewall status log
-e|--refresh
refresh & resolve dns names in trust rules
-a <HOST CMT|--allow <HOST COMMENT>
add host (IP/FQDN) to allow_hosts.rules and immediately load new rule into firewall
-d <HOST CMT|--deny <HOST COMMENT>
add host (IP/FQDN) to deny_hosts.rules and immediately load new rule into firewall
-u <HOST>|--remove <HOST>
remove host from [glob]*_hosts.rules and immediately remove rule from firewall
-o|--ovars
output all configuration options
COPYRIGHT
Copyright (C) 1999-2007, R-fx Networks <proj@r-fx.org>
Copyright (C) 2007, Ryan MacDonald <ryan@r-fx.org> This program may be freely redistributed under the terms of the GNU GPL
This manual page was written by Giuseppe Iuculano <giuseppe@iuculano.it>, for the Debian project (but may be used by others).
August 17, 2008 APF(1)