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Full Discussion: loop problems...
Top Forums Shell Programming and Scripting loop problems... Post 302525660 by bassmasta1 on Friday 27th of May 2011 10:44:39 AM
Old 05-27-2011
loop problems...

Code:
 #!/bin/bashi
function userrecord() {
read -p "please enter a number: " a
clear
output=$(grep -w "$a" appraisalrecord)
b=$(echo $a | tr -dc [:digit:])
if [[ "$a" = "$b" ]]; then
echo -e "accepted\n"
else
echo -e "The input must be a numerical number\n"
        userrecord
fi
if [[ -z $a ]]; then
echo -e "the ID has already been taken\n"
        userrecord
fi
}
userrecord

hi everything is fine but when typing in a character like two the second time it wont loop it back it just stays at the start, do u know whats wrong ?
 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - Reads one line from standard input SYNOPSIS
line STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: line: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
None DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command within a shell command file to read from your terminal. The line command always writes at least a newline character. NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead. EXIT STATUS
Success. End-of-File. EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log This shell procedure displays the message: Enter comments for the log: It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon) prompt. See the echo command for information about the c escape sequence. SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p) Functions: read(2) Standards: standards(5) line(1)
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