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Full Discussion: Check if time format is valid
Top Forums Shell Programming and Scripting Check if time format is valid Post 302958146 by RavinderSingh13 on Tuesday 20th of October 2015 03:27:25 AM
Old 10-20-2015
Hello erin00,

Could you please try following and let me know if this helps.
Code:
cat script.ksh
echo $1 | awk -F ':' '{match($0,/[0-2][0-4]:[0-5][0-9]:[0-5][0-9]/);A=substr($0,RSTART,RLENGTH);if(A  && $1 !~ /24/){ print "good"}  else {print "bad" }}'

After running script above following will be the output.
Code:
./script.ksh 12:34:21
good
./scrpit.ksh 26:67:92
bad
./script.ksh 24:17:12
bad

You could use string Invalid in place of bad which I have used above. Also on a Solaris/SunOS system, change awkto /usr/xpg4/bin/awk , /usr/xpg6/bin/awk , or nawk.

Thanks,
R. Singh
Last edited by RavinderSingh13; 10-20-2015 at 04:36 AM..
 

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LEARN ABOUT OPENSOLARIS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh,
       /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh,
       /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.

       Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).

FILES

       /etc/shells    list of shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.11							    20 Nov 2007 							 shells(4)
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