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Top Forums Shell Programming and Scripting Noob stuck - where do I put my loop Post 302426680 by *nixnoob on Wednesday 2nd of June 2010 02:44:15 PM
Old 06-02-2010
Noob stuck - where do I put my loop

I'm a noob working on a script to take 3 user inputs. One of them is simply a variable: "poolname". The other 2 are cases: "groupa/groupb" and "enable/disable". "groupa" and "groupb" reference 2 files - groupa.txt or groupb.txt. These files simply consist of a list of server IP addresses and port numbers.

Based on the inputs, the script executes a command but, it needs to repeat the command once for each line in "groupa.txt" or "groupb.txt".

I've got the basics of it working, but the problem I'm having is with the loop to execute the command for each line in the list. Should I be doing this with a function or array or something else? Am I going about this all wrong? Smilie For now, I have the loop at the "group" case, but the script is not working correctly with the loop there.
Code:
!/bin/sh -x
usage() {
  echo "Usage: $1 <poolname> <group_a|group_b> <enable|disable>"
}
action() {
b pool $1 member $2 session $3
}
if [ $# -ne 3 ]; then
  usage $0
  exit 1
fi
POOLNAME=$1
GROUP=$2
VERB=$3
case "$GROUP" in
  "group_a")
     GROUP=`for i in $(cat groupa.txt); do echo $i; done`
    ;;
  "group_b")
     GROUP=`for i in $(cat groupb.txt); do echo $i; done`
    ;;
  *)
    echo "Unknown action $GROUP"
esac
case "$VERB" in
  "enable")
    action $POOLNAME $GROUP $VERB
    ;;
  "disable")
    action $POOLNAME $GROUP $VERB
    ;;
  *)
    echo "Unknown action $VERB"
esac

 

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ftpgroups(4)						     Kernel Interfaces Manual						      ftpgroups(4)

NAME
ftpgroups - group password file for use with the SITE GROUP and SITE GPASS commands. SYNOPSIS
DESCRIPTION
The file is the group password file for use with the SITE GROUP and SITE GPASS commands. To enable the use of this file, the entry must be made in the configuration file This file contains an alphanumeric string, encrypted password, and the actual group name from the file. Each entry is separated by After a user logs in, the SITE GROUP and SITE GPASS commands may be used to specify an enhanced access group and associated password. If the group name and password are valid, the user becomes (via a member of the group specified in the group access file, The format of the group access file is: where access_group_name is an arbitrary (alphanumeric and/or punctuation) string. encrypted_password is the password encrypted via crypt(3), exactly like in real_group_name is the name of a valid group listed in NOTE: For this option to work for anonymous FTP users, the ftp server must keep permanently open and the group access file is loaded into memory. This means that: (1) the ftp server now has an additional file descriptor open, and (2) the necessary passwords and access privileges granted to users via SITE GROUP will be static for the duration of an FTP ses- sion. If you have an urgent need to change the access groups and/or passwords *NOW*, then kill all of the running FTP servers. FILES
AUTHOR
was developed by the Washington University, St. Louis, Missouri. SEE ALSO
ftpaccess(4). ftpgroups(4)
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