Sponsored Content
Top Forums Shell Programming and Scripting Check if the input is number or text? Post 302370394 by fpmurphy on Wednesday 11th of November 2009 08:45:56 AM
Old 11-11-2009
Not sure what you were trying to achieve with both the check_it function and the case statement. You can do it all using a case statement as shown in the following example
Code:
#!/usr/bin/bash

shopt -s extglob

INPUT="123456"

case $INPUT in
   ( +([[:digit:]]) )   echo "INPUT is all numbers" ;;
   *)                   echo "INPUT is not all numbers" ;;
esac

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

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

What can i do to check that the input is all alphabet.. ? (4 Replies)
Discussion started by: XXXXXXXXXX
4 Replies

2. Shell Programming and Scripting

Check on Input

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... (3 Replies)
Discussion started by: dhananjaysk
3 Replies

3. UNIX for Dummies Questions & Answers

check the input

how to check whether a given input is a number or a string? (1 Reply)
Discussion started by: Shilpi
1 Replies

4. Shell Programming and Scripting

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 ? (7 Replies)
Discussion started by: CheeSen
7 Replies

5. Shell Programming and Scripting

shell script to take input from a text file and perform check on each servers and copy files

HI all, I want to script where all the server names will be in a text file like server1 server2 server3 . and the script should take servernames from a text file and perform copy of files if the files are not present on those servers.after which it should take next servername till the end of... (0 Replies)
Discussion started by: joseph.dmello
0 Replies

6. UNIX for Dummies Questions & Answers

Check Column corresponding to input

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... (7 Replies)
Discussion started by: newkid.7955
7 Replies

7. Shell Programming and Scripting

Check whether input is numeric

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 ... (3 Replies)
Discussion started by: infinitydon
3 Replies

8. UNIX for Dummies Questions & Answers

Search String, Out matched text and input text for no match.

I need to search a string for some specific text which is no big deal using grep. My problem is when the search fails to find the text. I need to add text like "na" when my search does not match. I have tried this command but it does not work when I put the command in a loop in a bash script: ... (12 Replies)
Discussion started by: jojojmac5
12 Replies

9. Shell Programming and Scripting

awk to skip lines find text and add text based on number

I am trying to use awk skip each line with a ## or # and check each line after for STB= and if that value in greater than or = to 0.8, then at the end of line the text "STRAND BIAS" is written in else "GOOD". So in the file of 4 entries attached. awk tried: awk NR > "##"' "#" -F"STB="... (6 Replies)
Discussion started by: cmccabe
6 Replies

10. Shell Programming and Scripting

Search last column of INPUT.txt in TABLEs text and add correspond columns to INPUT.txt

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... (2 Replies)
Discussion started by: alii
2 Replies
fmt(1)								   User Commands							    fmt(1)

NAME
fmt - simple text formatters SYNOPSIS
fmt [-cs] [-w width | -width] [inputfile...] DESCRIPTION
fmt is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in the -w width option. The default width is 72. fmt concatenates the inputfiles listed as arguments. If none are given, fmt formats text from the standard input. Blank lines are preserved in the output, as is the spacing between words. fmt does not fill nor split lines beginning with a `.' (dot), for compatibility with nroff(1). Nor does it fill or split a set of contiguous non-blank lines which is determined to be a mail header, the first line of which must begin with "From". Indentation is preserved in the output, and input lines with differing indentation are not joined (unless -c is used). fmt can also be used as an in-line text filter for vi(1). The vi command: !}fmt reformats the text between the cursor location and the end of the paragraph. OPTIONS
-c Crown margin mode. Preserve the indentation of the first two lines within a paragraph, and align the left margin of each subsequent line with that of the second line. This is useful for tagged paragraphs. -s Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such formatted text, from being unduly combined. -w width | -width Fill output lines to up to width columns. OPERANDS
inputfile Input file. ENVIRONMENT VARIABLES
See environ(5) for a description of the LC_CTYPE environment variable that affects the execution of fmt. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
nroff(1), vi(1), attributes(5), environ(5) NOTES
The -width option is acceptable for BSD compatibility, but it may go away in future releases. SunOS 5.10 9 May 1997 fmt(1)
All times are GMT -4. The time now is 09:34 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy