Shell Programming and Scripting

Hi ,

I have a line by line output as follows,for example output of ls

sample1
sample2
sample

i need to check if this output contains the exact string sample.If i use grep , it will find out all strings that contain sample as a part of their word.I dont want to do a pattern matching here but check if one of the line is equal to "sample" (a string comparison).How can i achieve this in shell scripting?

Thanks,
Padmini

uh, so maybe

Code:

ls | grep -e "^sample$"

?

Try this,

Code:

 

cat filename | while read input

do 

 if [[ "$input" = "string to be searched" ]]

 then

     #do some action if string match

 else

    # do some action if string does not match

 fi

done

Code:

# grep --version
grep (GNU grep) 2.5.1-FreeBSD

#grep -w sample file

Hi,

what is "^sample$" ? am not able to understand this.

That's a regex, it tells:

Code:

^       #matches the null string at the beginning of a line
sample
$       #matches the null string at the end of a line

literally, search sample, nothing else.

Hi,

But am not getting the correct output if i use ls | grep "^sample$"