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Full Discussion: [SHELL: /bin/sh] For loop using variable variable names
Top Forums Shell Programming and Scripting [SHELL: /bin/sh] For loop using variable variable names Post 302651911 by gary_w on Wednesday 6th of June 2012 10:42:03 AM
Old 06-06-2012
This works. Note Rule_Severity is null to test:
Code:
$ cat x
#!/bin/sh

Group_ID='V-4269-1'
Group_Title='Unnecessary Accounts, Games.'
Rule_ID='SV-4269-lr4_rule'
Rule_Severity=""
Rule_Version='GEN000290-1'
Rule_Title='The system must not have the unnecessary "games" account.'
Rule_Fix_Text='Remove the "games" account from the /etc/password file before connecting a system to the network.'


CheckValues() {
    for field in \
        Group_ID \
        Group_Title \
        Rule_ID \
        Rule_Severity \
        Rule_Version \
        Rule_Title \
        Rule_Fix_Text; do
        eval var="\$${field}"
        if [ -z "$var" ]; then
            echo "Error, field [${field}] undefined."
        else
            echo "$var"
        fi
    done
}

CheckValues

exit 0
$ x
V-4269-1
Unnecessary Accounts, Games.
SV-4269-lr4_rule
Error, field [Rule_Severity] undefined.
GEN000290-1
The system must not have the unnecessary "games" account.
Remove the "games" account from the /etc/password file before connecting a system to the network.
$

This User Gave Thanks to gary_w For This Post:
Vryali
 

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LEARN ABOUT SUSE

pwconv

pwconv(8)						      System Manager's Manual							 pwconv(8)

NAME

       pwconv - convert to shadow account

SYNOPSIS

       pwconv [-P path]

DESCRIPTION

       pwconv  installs  and updates /etc/shadow with information from /etc/passwd. It relies on the special password 'x' in the password field of
       the account. This value indicates that the password for the user is already in /etc/shadow and should not be modified.

       If /etc/shadow does not exist, pwconv creates this file, moves the user password to it and creates default aging informations with the help
       of  the	values	of PASS_MIN_DAYS, PASS_MAX_DAYS and PASS_WARN_AGE from /etc/login.defs. The password field in /etc/passwd is replaced with
       the special character 'x'.

       If the /etc/shadow does exist, entries that are in the /etc/passwd file and not in the /etc/shadow file are added to the /etc/shadow  file.
       Accounts,  which  only  exist  in /etc/passwd, are added to /etc/shadow. Entries that are in /etc/shadow and not in /etc/passwd are removed
       from /etc/shadow. All passwords from /etc/passwd are moved to /etc/shadow and replaced with the special character 'x'.

       pwconv can be used for initial conversion and for updates later.

OPTIONS

       -P, --path path
	      The passwd and shadow files are located below the specified directory  path.  pwconv  will  use  this  files,  not  /etc/passwd  and
	      /etc/shadow.

FILES

       passwd - user account information
       shadow - shadow user account information

SEE ALSO

       passwd(1), login.defs(5), passwd(5), shadow(5), pwck(8), pwunconv(8)

AUTHOR

       Thorsten Kukuk <kukuk@suse.de>

pwdutils							   January 2004 							 pwconv(8)
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