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Top Forums Shell Programming and Scripting Korn Shell help - Using parameter to create variable names Post 302770181 by mrevello on Thursday 14th of February 2013 04:18:36 PM
Old 02-14-2013
Hammer & Screwdriver Korn Shell help - Using parameter to create variable names

I'm using korn shell and I am wondering if it's possible to use a parameter passed into a function to build a variable name in a configuration file. I have the function in one source file, I'd like to have a global configuration file instead of hardcoding logins to each script.

So I have a function, it accepts a system ID and I want to use that ID to read a configuration file for the server, user name and login for several different FTP sites. When I pass in the system ID of boe I then want to read the configuration file for boeServer, boeUser and boePassword but keep getting not found.

This is my source file functions:
Code:
function ftpConfirm {
system=$1
# Configuration file to look up FTP information
. $HOME/ftpLogins
server="${system}Server"
user="${system}User"
password="${system}Password"
echo "**** System variable passed in: $system"
echo "**** Server we are connecting to: $server"
echo "**** User name: $user"
echo "**** Password: $password"
echo "* Just referencing the variable returns the results I want: $boeServer"

Here's my config file ftpLogins:
Code:
export boeServer=ftp1
export boeUser=teamUser
export boePassword=download
export ibmServer=ibm1
export ibmUser=teamUser
export ibmPassword=download

And a simple script to call the function that I'm using:
Code:
#!/bin/ksh -f
. $HOME/fucntions
ftpConfirm "boe"

This would allow us to essentially build one function that could FTP anywhere we need and if we FTP to that server more than once, we would have to make just one change.

Thanks in advance,
Mike
 

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FTPFS(4)						     Kernel Interfaces Manual							  FTPFS(4)

NAME
ftpfs - file transfer protocol (FTP) file system SYNOPSIS
ftpfs [ -/dq ] [ -m mountpoint ] [ -a password ] system DESCRIPTION
Ftpfs dials the TCP file transfer protocol (FTP) port, 21, on system and mounts itself (see bind(2)) on mountpoint (default /n/ftp) to pro- vide access to files on the remote machine. If required by the remote machine, ftpfs will prompt for a user name and password. The user names ftp and anonymous conventionally offer guest/read-only access to machines. Anonymous FTP may be called without user interaction by using the -a option and specifying the password. By default the file seen at the mount point is the user's remote home directory. The option -/ forces the mount point to correspond to the remote root. To avoid seeing startup messages from the server use option -q. To see all messages from the server use option -d. To terminate the connection, unmount (see bind(1)) the mount point. EXAMPLE
You want anonymous FTP access to the system export.lcs.mit.edu. The first import(4) command is only necessary if your machine does not have access to the desired system, but another, called gateway in this example, does. import gateway /net ftpfs -a yourname@yourmachine export.lcs.mit.edu SOURCE
/sys/src/cmd/ftpfs SEE ALSO
bind(2) BUGS
Symbolic links on remote Unix systems will always have mode 0777 and a length of 8. After connecting to a TOPS-20 system, the mount point will contain only one directory, usually /n/ftp/PS:<ANONYMOUS>. However, walking to any valid directory on that machine will succeed and cause that directory entry to appear under the mount point. Ftpfs caches files and directories. A directory will fall from the cache after 5 quiescent minutes or if the local user changes the direc- tory by writing or removing a file. Otherwise, remote changes to the directory that occur after the directory has been cached might not be immediately visible. There is no way to issue the appropriate commands to handle special synthetic FTP file types such as directories that automatically return a tar of their contents. FTPFS(4)
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