Check if the input is number or text? Post: 302370370

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HI all, I would like to know how the user can be restricted for entering only the number and not characters in sheel scripts.. Suppose code is like this echo 'Enter the number' read Value Now user may enter 'a' as value... But i want to disallow him for entering characters other than...

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check the input

how to check whether a given input is a number or a string?

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Bash : how do i check the user input and make sure is only chracter or only number ?

Bash : how do i check the user input and make sure is only character or only number ?

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I have a file which extracts data from an HTML file For Eg HTML file contains: New York;ABC;145;Yes;YES;No New York;BCD;113;Yes;YES;No New York;NAS;63;Yes;YES;No ------------------------ London-48;CBT;16;Yes;YES;No London-48;CME;17;Yes;YES;No London-48;EUR;52;Yes;YES;No...

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Hello there, find below for my code first: $pdp_asaba=`cat /tmp/temp_total | grep asaba | sed 's/*//g'` if ]] then pdp_asaba=0 fi $pdp_abuja=`cat /tmp/temp_total | grep abuja | sed 's/*//g'` if ]] then pdp_abuja=0 fi $pdp_ojota=`cat /tmp/temp_total | grep ojota | sed 's/*//g'` if ...

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Hi dears i use bash shell i have INPUT.txt like this number of columns different in one some row have 12 , some 11 columns see last column INPUT.txt CodeGender Age Grade Dialect Session Sentence Start End Length Phonemic Phonetic 63 M 27 BS/BA TEHRANI 3 4 298320 310050...

LEARN ABOUT SUSE

echo

ECHO(1) 							   User Commands							   ECHO(1)

NAME

       echo - display a line of text

SYNOPSIS

       echo [SHORT-OPTION]... [STRING]...
       echo LONG-OPTION

DESCRIPTION

       Echo the STRING(s) to standard output.

       -n     do not output the trailing newline

       -e     enable interpretation of backslash escapes

       -E     disable interpretation of backslash escapes (default)

       --help display this help and exit

       --version
	      output version information and exit

       If -e is in effect, the following sequences are recognized:

       NNN  the character whose ASCII code is NNN (octal)

       \     backslash

       a     alert (BEL)

            backspace

       c     produce no further output

       f     form feed

       
     new line

       
     carriage return

       	     horizontal tab

       v     vertical tab

       NOTE: your shell may have its own version of echo, which usually supersedes the version described here.	Please refer to your shell's docu-
       mentation for details about the options it supports.

AUTHOR

       Written by Brian Fox and Chet Ramey.

REPORTING BUGS

       Report echo bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2009 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The full documentation for echo is maintained as a Texinfo manual.  If the info and echo programs are properly installed at your site,  the
       command

	      info coreutils 'echo invocation'

       should give you access to the complete manual.

GNU coreutils 7.1						     July 2010								   ECHO(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

What can i do to check that the input is all alphabet.. ?

Discussion started by: XXXXXXXXXX

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Check on Input

Discussion started by: dhananjaysk

3. UNIX for Dummies Questions & Answers

check the input

Discussion started by: Shilpi

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Bash : how do i check the user input and make sure is only chracter or only number ?

Discussion started by: CheeSen