===== .barshrc =====

<code |f .barshrc>

function os {
      export OPER_SYS_1="`uname -s`"
      export OPER_SYS_2="`cat /etc/issue | head -n 1`"
      export KERN_INFO="`uname -r`"
      echo -ne "\033[31mOS:\033[0m " &amp;&amp; echo "$OPER_SYS_1, $OPER_SYS_2"
      echo -e "\033[32mKernel:\033[0m $KERN_INFO"
      }

function hw () {
   export MOBO_MAN="`sudo dmidecode --type baseboard | grep 'Manufacturer' | cut -d' ' -f2-`"
   export MOBO_MOD="`sudo dmidecode --type baseboard | grep 'Product' | cut -d' ' -f3-`"
   export CPU="`cat /proc/cpuinfo | grep 'model name' | cut -d' ' -f3-`"
   export RAM_TOTAL_KB="`cat /proc/meminfo | grep MemTotal | awk '{print $2}'`"
   export HDD_INFO="`sudo fdisk -l | grep Disk | grep -v identifier`"
   echo -e "\033[1;34mHardware\033[0m:"
   echo " * Motherboard:"
   echo " * Manufacturer: $MOBO_MAN"
   echo " * Model: $MOBO_MOD"
   echo " * CPU(s):"
   echo "$CPU"
   echo " * Total RAM: $(($RAM_TOTAL_KB / 1024)) MB"
   echo " * HDD info: "
   echo "$HDD_INFO"
   echo
</code>

    alias system="os &amp;&amp; hw"

**Colored prompt**
<code bash|>
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;31m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
</code>

==== Adds date/time to history ====
  #vi $HOME/.bashrc
  export HISTTIMEFORMAT=”%h/%d - %H:%M:%S “

==== If you just want to find out what's new in a directory ====

   lsnew() { ls -lt ${1+"$@"} | head -20; }

===== Scripts =====
==== Diff Two Directories ====

<code bash|f diff2.sh>
#!/bin/bash

cr='*'
if [ -z $3 ]; then cr=$3; fi

for f in `find $1/$3 -type f | sed "s|$1/||"`
do
  printf "===!%-76s" "$f!" | tr ' !' '= '; echo
  diff $1/$f $2/$f | sed -e "s/^</$1: /" -e "s/^>/$2: /"
done
</code>

===== Bash misc stuff =====
==== $RANDOM not random at all ====

instead of $RANDOM use ..
  SEED=$(head -c4 /dev/urandom | od -t u4 | awk '{ print $2 }')
  ((N=SEED%N))
or

  SEED=$(head -1 /dev/urandom | od -N 1 | awk '{ print $2 }') 
  ((N=SEED%N))