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Full Discussion: How to check user entered correct file format or not?
Top Forums Shell Programming and Scripting How to check user entered correct file format or not? Post 302995163 by Scrutinizer on Sunday 2nd of April 2017 11:48:28 AM
Old 04-02-2017
Hi Nalu,

What is your OS and version and what shell will you be using?

--
If you have bash/ksh93/zsh, you can try something like this:

Code:
#!/bin/bash
format=$1
path=/db/files

matching() {
  [ -e "$1" ]
}

format=${format//A/[[:alpha:]]}
format=${format//[YMDHS]/[[:digit:]]}

if matching "$path"/$format; then
  echo "file format matching"
else
  echo "file format NOT matching"
fi

Last edited by Scrutinizer; 04-02-2017 at 05:07 PM..
 

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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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