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Full Discussion: Controlling user input
Top Forums Shell Programming and Scripting Controlling user input Post 303038291 by Corona688 on Thursday 29th of August 2019 04:55:47 PM
Old 08-29-2019
BASH allows you to use the basic TTY properties to establish timeouts and read minimums:

Code:
#!/bin/bash

# Timeout is 1/10 of a second, minimum read is 0 characters
stty -icanon min 0 time 1

sleep 3 & # Background command

# Eat any characters until 'sleep' quits
while [ -d /proc/"$!" ] ; do read G ; done

wait

printf "%s" "OK, now respond 1 or 2: "

while true
do
        case "$VAR" in
        1|2)    break           ;;
        *)      read VAR        ;;
        esac
done

echo
echo "You responded:  $VAR"

stty sane # Reset terminal to normal

Haven't got it working in KSH yet. Can't convince it to not mess with the TTY.
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cvm-sql(7)						 Miscellaneous Information Manual						cvm-sql(7)

NAME
cvm-sql - CVM SQL Framework QUERY SUBSTITUTION
$VAR and ${VAR} are replaced with the quoted value of the environment variable named VAR. Use the second form when VAR contains anything other than alpha-numeric or underscore (_) characters. Do not include quotes in the query. The variables account and domain contain the account and domain names given by the CVM client. $$ is replaced with a single dollar sign. QUERY RESULTS
The query must produce the following fields exactly in order. All required fields must not be null or empty. 1. Password, encrypted with crypt(3) (required) 2. Actual account name (required) 3. User ID (integer) (required) 4. Group ID (integer) (required) 5. Directory (required) 6. Real name (optional) 7. Login shell (optional) 8. Group name (optional) 9. Domain name (optional) 10. System account name (optional) 11. System account directory (optional) 12. Mailbox path (optional) DEFAULT QUERY
SELECT password, username, userid, groupid, directory, realname, shell, groupname, domain, sys_username, sys_directory FROM accounts WHERE username=$account AND domain=$domain SEE ALSO
cvm-mysql(8), cvm-pgsql(8), cvm-pwfile(8), cvm-qmail(8), cvm-unix(8), cvm-vmailmgr(8), cvm-benchclient(8), cvm-checkpassword(8), cvm-test- client(8) http://untroubled.org/cvm/cvm.html cvm-sql(7)
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