Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Date & NUmber Validation Query
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

LEARN ABOUT XFREE86

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
All times are GMT -4. The time now is 10:00 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy