use if to test for YES or Y, but case insensitive

[areis22]

Hey everyone,

So I'm writing a shell script to use LSHW to pull only specific information about a system for me, but I need to get the IF statement to compare to four "words" and be case-insensitive for all.

Ex.

#!/bin/bash
echo 'Enter the three digit store code'
echo
read store
echo
echo
echo 'Is '$store' correct?'
echo
read stans
echo
if [ $stans = "yes" OR "y" (insensitive) ]
   then
       //Code
   elif [$stans = "no" OR "n" (insensitive)]
      //Code
   else
      //Code
fi

Anyone have any input? Using bash as the shell for the script

[Cabhan]

One easy way to do it might be:

if echo "$stans" | grep -qiE "^y(es)?$"; then
    # Yes
elif echo "$stans" | greq -qiE "^no?$"; then
    # No
else
    # Other
fi

Here, we're using grep to match patterns against the value of $stans. "-q" means "quiet", and will use the return value to determine whether or not the match was successful. Note that we do not use [ ... ] when we use grep -q; we simply put the grep into the if statement directly.

"-i" means case-insensitive match, which handles the many possibilities of cases.

"-E" means to use extended regular expressions, which enables the "?" character in the expression. This makes it easy to match either "yes" or "y".

Does this make sense?

[areis22]

Thank you for the help Cabhan!! I've got another one for ya.

What I'm doing now is using a combination of
[code]
cat -n /tmp/disk | grep "*-" | awk '{print $1}' | sed 's/://g' > /tmp/num
1
8
20
[/code

]cat -n /tmp/disk to print file with line numbers, grep to select the lines with the "headers" of *-(any), awk to print just the line number with the colon and sed to remove the colon and output the pure line numbers to a file formatted as such

Essentially, I'm trying to take this:

     1  *-disk
     2       description: SCSI Disk
     3       physical id: 0.0.0
     4       bus info: scsi@0:0.0.0
     5       logical name: /dev/sda
     6       size: 3827MiB (4012MB)
     7       capabilities: partitioned partitioned:dos
     8  *-disk
     9       description: ATA Disk
    10       product: ST3160815A
    11       vendor: Seagate
    12       physical id: 0
    13       bus info: ide@0.0
    14       logical name: /dev/hda
    15       version: 3.AAD
    16       serial: 9RAA4N9W
    17       size: 149GiB (160GB)
    18       capabilities: ata dma lba iordy smart security pm partitioned parti
tioned:dos
    19       configuration: mode=udma5 signature=0004b15b smart=on
    20  *-cdrom
    21       description: DVD reader
    22       product: DVD-ROM DDU1621
    23       physical id: 0
    24       bus info: ide@1.0
    25       logical name: /dev/hdc
    26       version: VER S3.1
    27       capabilities: packet atapi cdrom removable nonmagnetic dma lba iord
y audio dvd
    28       configuration: mode=udma2 status=open

and split it up into multiple files based on the headers on line 1, 8, and 20. Problem is, there could be more or less than 3 headers with *- depending on the system.

For example:

the first *-disk > /tmp/disk0
the second *-disk > /tmp/disk1
*-cdrom > /tmp/cdrom

Any ideas?