Sponsored Content
Top Forums Shell Programming and Scripting Date & NUmber Validation Query Post 59271 by zazzybob on Wednesday 15th of December 2004 05:26:52 AM
Old 12-15-2004
I'd use grep
Code:
$ echo "12/31/2004" | grep '^[0-1][0-9]/[0-3][0-9]/[0-9]\{4\}$' >/dev/null 2>&1
$ echo $?
0
$ echo "some text" | grep '^[0-1][0-9]/[0-3][0-9]/[0-9]\{4\}$' >/dev/null 2>&1
$ echo $?
1

You can then check $? and act accordingly.

You can extend this example to simple numerical verification...
Code:
$ echo "193912391293" | grep '^[0-9]*$'

You get the idea....

Cheers
ZB

Last edited by zazzybob; 12-15-2004 at 10:48 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Problem with Date validation

Hi All, I've to validate a date input for the format YYYYMMDD. The input should be of 8 digits with only numeric values. I tried the following echo $1 | grep '^\{8}$/p' if then echo "Valid" else echo "invalid" I get the error, grep: RE error 16: Bad number. Any help... (3 Replies)
Discussion started by: sumesh.abraham
3 Replies

2. Shell Programming and Scripting

Date Validation again

I want a sample Date validation script using if loops. The script should first compare "year".If the year is lesser than the current year,It should go for "month" checking. I have the script that splits the date into year,month and date.I want only the checking part. My if loop checking is not... (4 Replies)
Discussion started by: dave_nithis
4 Replies

3. Shell Programming and Scripting

Date Validation:

Hi I have below file with 3 rd column as date ....i want to make 3 column to mm/dd/yyyy . in the below file 2 row date is like 1/23/1994 so i want to append '0' to month i,e. 01/23/1994 and in the 3 row date is like 6/4/1994 ---so i want this to 06/04/1994 Source:... (1 Reply)
Discussion started by: satyam_sat
1 Replies

4. Shell Programming and Scripting

Date Validation

the user have to input the date format in mmddmmhhyyyy (month,date,minutes,hour,year) i want a shell script to check whether the user has properly input in the above said manner. kindly advice (2 Replies)
Discussion started by: vkca
2 Replies

5. Shell Programming and Scripting

Date Validation in unix

I have a script which is take date as parameter sh abc.sh <2010-02-01> #!/sh/bin my_date=$1 #Here i want to two diffrent dates ## 3 Days before ##date14query=$mydate - 4 (it will be 2010-01-28) ##date24query=$mydate +4 (it will be 2010-01-05) #Please Help (3 Replies)
Discussion started by: pritish.sas
3 Replies

6. Shell Programming and Scripting

Date validation

Hi, I have a script which runs on specific sunday. If that script runs on the sunday i want to execute another script on following wednesday. I have a log for that server. My wednesday scripts needs to check the sunday run log timestamp and if it matches it should run. Please help. Thanks,... (1 Reply)
Discussion started by: Krrishv
1 Replies

7. Shell Programming and Scripting

Date validation

File contains below data,how to validate the date using awk command or any command. date formate is fixed as "YYYYMMDD" test1|20120405 test2|20121405 output should be: test1|20120405 Thanks (2 Replies)
Discussion started by: bmk
2 Replies

8. Programming

Date validation in mysql

Hi All, We need to create the custom function to pass the parameter is date.if it is valid return 1 else 0 return should be 1 select is_date('2012-09-17'); return should be 0 select is_date('2012-79-17'); Thanks (2 Replies)
Discussion started by: bmk
2 Replies

9. UNIX for Dummies Questions & Answers

Date Validation not working

Hi Experts, I have a date validation script in that i will validate the date for a given format and search in the logs for that date. The script logic is very simple like below. Validate_Date() { is_valid=1 while do date_format=$(date "+$1") echo -e "Please enter the $2 date like... (6 Replies)
Discussion started by: senthil.ak
6 Replies

10. What is on Your Mind?

Date validation

Hi folks, I new to shell script . I want to know how to validate a String as valid date example: 20150712 ---> valid date 20160524-->valid 201605T12-->invalid date 12341234--->invalid date we need to valid string( yyyymmdd) to date in SunOS 5.10 please give some idea to validate... (9 Replies)
Discussion started by: srinadhreddy27
9 Replies
echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.10 3 Aug 1994 echo(1B)
All times are GMT -4. The time now is 07:32 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy