#!/bin/bash
i="Hello"  

  if [[ $i = "Hello" ]] ; then
     echo “Found hello”
  fi

lovebox:[/tmp] $ ./1.sh
Found hello

#!/bin/bash
i="Hello"
  if [ $i ] ; then
     echo "Found hello"
  fi

lovebox:[/tmp] $ ./1.sh
Found hello

#!/bin/bash
  if [ ! $i ] ; then
     echo "Hello is missing"
  fi

lovebox:[/tmp] $ ./1.sh
Hello is missing

if [[ $OPS -lt $TARGET ]] ; then 

RunID's

Generating runid's to generate unique file/directory names

RUNID=`date +"%y%m%d%H%M"`

RUNID=`date +"%y%m%d%H%M"`-$$

Loop structures

Zsh
% for i in {0..31}
do
echo lun resize /vol/vol1/lun$i 50456m
done


lun resize /vol/vol1/lun0 50456m
lun resize /vol/vol1/lun1 50456m
lun resize /vol/vol1/lun2 50456m
lun resize /vol/vol1/lun3 50456m
lun resize /vol/vol1/lun4 50456m
lun resize /vol/vol1/lun5 50456m
lun resize /vol/vol1/lun6 50456m
lun resize /vol/vol1/lun7 50456m
lun resize /vol/vol1/lun8 50456m
lun resize /vol/vol1/lun9 50456m
lun resize /vol/vol1/lun10 50456m
...