Shell Programming and Scripting

echo -n "Enter parameter 1: "; read parm1
echo -n "Enter parameter 2: "; read parm2

parm1Found=0
parm2Found=0

while read LINE
do
  if [ $LINE -eq $parm1 ]; then
    parm1Found=1
  fi
done < file1

if [ $parm1Found -eq 1 ]; then
  while read LINE
  do
    if [ $LINE -eq $parm2 ]; then
      parm2Found=1
    fi
  done < file2
  if [ $parm2Found -eq 1 ]; then
    call other script
  else
    echo "Parameter 1 found, but Parameter 2 not found."
    echo "Other script not executed."
  fi
else
  echo "Parameter 1 not found, so Parameter 2 not searched for."
  echo "Other script not executed."
fi

echo -n "Enter parameter 1: "; read parm1
echo -n "Enter parameter 2: "; read parm2

if grep -wq "$parm1" file1 && grep -wq "$parm2" file2 ; then
    call other script
fi

if awk -v p=$parm1 '$1==p {exit 0} END { exit 1 }' file1 &&
   awk -v p=$parm2 '$1==p {exit 0} END { exit 1 }' file2 ; then

#!/usr/bin/awk -f
$1 == p { exit 0 }
END {exit 1}

if present -v p=$parm1 file1 && present -v p=$parm2 file2 ; then

#!/bin/sh
if [ "$#" = 0 ]; then
    echo "Need a string to search for!" >&2
    exit 1
fi
pattern="$1"
shift
awk -v "p=$pattern" '$1 == p { exit 0 }
END { exit 1 }' "$@"

if present $parm1 file1 && present $parm2 file2 ; then

#!/bin/sh
if [ "$#" = 0 ]; then
    echo "Need a string to search for!" >&2
    exit 1
fi
pattern="$1"
shift
awk -v "p=$pattern" '{
        for (i=1; i<=NF; i++)
            if ($i == p) exit 0 }
END { exit 1 }' "$@"

#!/bin/sh
i=0
while getopts i arg ; do
    case $arg in
    i)  i=1 ;;
    ?)  echo "Bad option" >&2 ;;
    esac
done

shift `expr $OPTIND - 1`

if [ "$#" = 0 ]; then
    echo "Need a string to search for!" >&2
    exit 1
fi
pattern="$1"
shift
nawk -v "p=$pattern" -v ig=$i'{
        if(!ig) $0 = toupper($0)
        for (i=1; i<=NF; i++) if ($i == p) exit 0
    }
END { exit 1 }' "$@"