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Full Discussion: Help Me. The script should not exit until the user gives an input.
Top Forums Shell Programming and Scripting Help Me. The script should not exit until the user gives an input. Post 303001763 by jim mcnamara on Thursday 10th of August 2017 09:48:06 PM
Old 08-10-2017
Good first question, thanks.

scp requires two parameters:
Code:
scp sourcefile  remotecomputer:/path/to/destfile

Your problem is the if then read else fi blocks..

pseudocode this will not work for every shell, so be sure to check syntax for functions, for example:

Code:
function get()
{
    prompt="$1"
    value=""
    while [ ${#value} -eq 0 ]
    do
        echo -n $"$prompt  "
        read value
        if [ -z "$value" ] ; then
            echo "bad input" >2
            exit
        fi
        # optional check logic goes here, like is it a valid date or username
    done 
    # we get here because input is okay
    echo "$value"    
}

#usage example:
mydate=$( get "Enter a date")
myuser=$( get "Enter a list of users")
moredata=$(get "please enter more data or whatever")

create a function you call to check dates or whatever as you please. Then get rid of the long if ... then ..else.. fi code
This User Gave Thanks to jim mcnamara For This Post:
Helskadi
 

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LEARN ABOUT DEBIAN

shtool-echo

SHTOOL-ECHO.TMP(1)					      GNU Portable Shell Tool						SHTOOL-ECHO.TMP(1)

NAME

       shtool-echo - GNU shtool echo(1) extensional command

SYNOPSIS

       shtool echo [-n|--newline] [-e|--expand] string

DESCRIPTION

       shtool echo is an echo(1) style command which prints string to stdout and optionally provides special expansion constructs (terminal bold
       mode, environment details, date, etc) and newline control. The trick of this command is that it provides a portable -n option and hides the
       gory details needed to find out the environment details under option -e.

OPTIONS

       The following command line options are available.

       -n, --newline
	   By default, output is written to stdout followed by a "newline" (ASCII character 0x0a). If option -n is used, this newline character is
	   omitted.

       -e, --expand
	   If option -e is used, string can contain special "%x" constructs which are expanded before the output is written. Currently the
	   following constructs are recognized:

	   %B  switch terminal mode to bold display mode.

	   %b  switch terminal mode back to normal display mode.

	   %u  the current user name.

	   %U  the current user id (numerical).

	   %g  the current group name.

	   %G  the current group id (numerical).

	   %h  the current hostname (without any domain extension).

	   %d  the current domain name.

	   %D  the current day of the month.

	   %M  the current month (numerical).

	   %m  the current month name.

	   %Y  the current year.

EXAMPLE

	#   shell script
	shtool echo -n -e "Enter your name [%B%u%b]: "; read name
	shtool echo -e "Your Email address might be %u@%h%d"
	shtool echo -e "The current date is %D-%m-%Y"

HISTORY

       The GNU shtool echo command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Website META Language (WML)
       under the name buildinfo. It was later taken over into GNU shtool.

SEE ALSO

       shtool(1), echo(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-ECHO.TMP(1)
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