write a fancy bashrc

.bashrc

@@ -1,3 +1,5 @@
+. /etc/bash.bashrc
+
 alias l="ls -lah"
 alias la="ls -ah"
 alias ls="ls -h"
@@ -9,4 +11,35 @@ alias psgrep="ps axu | grep"
 alias isotime='date +"%Y-%m-%dT%H:%M:%S%z"'
 alias isodate='date +%Y-%m-%dT%H:%M:%S%z'
 alias gls=/bin/ls
-export HISTFILE=/dev/null
+alias isotime='date +"%Y-%m-%dT%H:%M:%S%z"'
+alias isodate='date +%Y-%m-%dT%H:%M:%S%z'
+alias datefmt='date $DATEFMT'
+alias gotemp="cd $(mktemp -d)"
+alias fd=fdfind
+alias bak=backup
+
+export PS1='\[\e[1;31m\]\u@\h \[\e[1;36m\]\w\[\e[1;37m\] \$ \[\e[0m\]'
+export DEBEMAIL="software@cscherr.de"
+export DEBFULLNAME="Christoph J. Scherr"
+export DEBIDENTITY="$DEBFULLNAME <$DEBEMAIL>"
+export TIMEFMT=$'\nreal\t%E\nuser\t%U\nsys\t%S\ncpu\t%P'
+export DATEFMT='+%a %Y-%m-%d %X'
+export EDITOR=$(which vim)
+export VISUAL=$(which vim)
+
+function random() {
+    if [ $# -ne 1 ] || ! [[ $1 =~ ^[0-9]+$ ]] || [ $1 -lt 1 ]; then
+        echo "Error: Please provide one positive integer argument" >&2
+        return 1
+    fi
+    echo $(( (RANDOM % $1) + 1 ))
+}
+function largefiles () { exec 2>/dev/null; du -ah "$@" | grep -P "^\d+(G|T|P|E)\s" }
+function midfiles () { exec 2>/dev/null; du -ah "$@" | grep -P "^\d+(M|G|T|P|E)\s" }
+function smallfiles () { exec 2>/dev/null; du -ah "$@" | grep -P "^\d+(B|K)\s" }
+function newpass() {
+    LC_ALL=C tr -dc '[:alnum:]' < /dev/urandom | head -c${1:-40}
+}
+
+# set vi mode
+set -o vi