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Full Discussion: Shell Scripting awk Problem
Top Forums Shell Programming and Scripting Shell Scripting awk Problem Post 302780435 by Corona688 on Thursday 14th of March 2013 01:37:20 PM
Old 03-14-2013
What is the 'awk' for? That doesn't look like awk code. (awk is its own programming language.)

You do not need to check if grep's output is blank to see if it found anything. It returns a success or failure code like any other utility. You can plug it into if directly, and invert with ! if needed.

'break' only makes sense in a loop. If you want to exit, 'exit' is what you want, 'exit 1' to exit with error particularly.

Your code looks for /temp, but your warning demands /tmp. Assuming /tmp is what you really want.

You need a return, or ; , between your if statement and the then.

Warning messages should go to standard error.

Code:
if ! grep -q "/tmp" /etc/fstab
then
    echo "The RHEL security benchmarks require that there be a /tmp file partition." >&2
    echo "Since this system doesn't have one, you will need to rebuild the system," >&2
    echo "creating a /tmp partition." >&2
    exit 1
fi

 

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LEARN ABOUT MINIX

grep

GREP(1) 						      General Commands Manual							   GREP(1)

NAME

       grep - search a file for lines containing a given pattern

SYNOPSIS

       grep [-elnsv] pattern [file] ...

OPTIONS

       -e     -e pattern is the same as pattern

       -c     Print a count of lines matched

       -i     Ignore case

       -l     Print file names, no lines

       -n     Print line numbers

       -s     Status only, no printed output

       -v     Select lines that do not match

EXAMPLES

       grep mouse file	   # Find lines in file containing mouse

       grep [0-9] file	   # Print lines containing a digit

DESCRIPTION

       Grep  searches  one  or	more  files (by default, stdin) and selects out all the lines that match the pattern.  All the regular expressions
       accepted by ed and mined are allowed.  In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or  1
       occurrences,  and  |  can  be used between two regular expressions to mean either one of them.  Parentheses can be used for grouping.  If a
       match is found, exit status 0 is returned.  If no match is found, exit status 1 is returned.  If an error is detected,  exit  status  2	is
       returned.

SEE ALSO

       cgrep(1), fgrep(1), sed(1), awk(9).

																	   GREP(1)
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