A basic shell setup file

bash_profile

# Set up custom bash command prompt.
# Default is "\h:\W \u\$ ".
RED="\[\e[0;31m\]"
GREEN="\[\e[0;32m\]"
BLUE="\[\e[0;34m\]"
PLAIN="\[\e[m\]"
PS1="${RED}\u@\h: \w\$ ${PLAIN}"


# Aliases.
alias l='ls -G'
alias la='l -a'
alias ll='l -l'
alias lla='l -la'

alias b='cd ..'
alias pec='echo $?' # print exit code
alias sumlines='pbpaste | python -c "import sys; print sum(float(line) for line in sys.stdin.read().splitlines() if line.strip())"'

alias g='git'
alias gd='git branch; git status; git --no-pager diff'
alias gds='git --no-pager diff --staged'
alias gitnp='git --no-pager'
alias gnp='git --no-pager'
alias gsu='git submodule update --init'
alias gitsha='git rev-parse --verify HEAD'
alias gpr='git pull --rebase'
alias gca='git commit --amend'
alias gs='git stash'
alias gss='git show --stat'
alias gb='git branch'
alias gbv='git branch -vv'

alias grep='grep --color'


# Override the ssh command with a function that copies a bashrc file to the remote machine before running bash.
myssh(){ /usr/bin/ssh -l ubuntu -t $* "curl --silent --show-error 'https://gist.github.com/simonrad/997b6577b326398b2a38/raw' --output /tmp/ssh_override_bashrc_file && /bin/bash --rcfile /tmp/ssh_override_bashrc_file -i"; }

# Pass aliases through sudo.
alias sudo='sudo '

# Increase bash history size.
export HISTFILESIZE=50000
export HISTSIZE=50000
# Make writing to .bash_history immediate.
shopt -s histappend  # Append to history, don't overwrite it.
export PROMPT_COMMAND="history -a; history -c; history -r; $PROMPT_COMMAND"  # Append, clear, and reload history.

export EDITOR='nano -w'
# export EDITOR='subl -nw'

# Add to my PATH.
export PATH="/usr/local/bin:/usr/local/sbin:$PATH"

# Enable magical cd abilities.
export CDPATH='.:~/workspace/'

# Git helpers.
alias get_current_git_branch_name='python -c "print \"$(git symbolic-ref HEAD 2>/dev/null)\".split(\"/\",2)[-1] or \"!no_branch!\""'
alias publish_git_branch='git push -u origin $(get_current_git_branch_name)'
alias delete_remote_git_branch='git push origin --delete'

# Enable git autocompletion.
if [ -f ~/.git-completion.bash ]; then
    source ~/.git-completion.bash
else
    echo "Git autocompletion script (~/.git-completion.bash) not found. Attempting to download it."
    curl "https://gist.githubusercontent.com/simonrad/d57469270f78327f2fcf/raw" -o ~/.git-completion.bash
    source ~/.git-completion.bash
fi

# Set up virtualenvwrapper.
export WORKON_HOME=$HOME/.virtualenvs
export PROJECT_HOME=$HOME/workspace
source /usr/local/bin/virtualenvwrapper.sh

# Aliases to start and stop the Postgresql server manually.
export PGDATA='/usr/local/var/postgres'
export PGHOST=localhost
alias pgstart='pg_ctl -D $PGDATA -l $PGDATA/server.log start'
alias pgstop='pg_ctl -D $PGDATA stop -s -m fast'
alias pgc='pg_ctl'


# Function to run a command in a new iTerm tab/window.
run_in_new_terminal() {
    TEMP_SCRIPT=`mktemp -t run_in_new_terminal`
    echo '#!/bin/bash'        >> $TEMP_SCRIPT
    echo "cd '$PWD'"          >> $TEMP_SCRIPT
    echo "echo 'Running: $@'" >> $TEMP_SCRIPT
    echo "echo"               >> $TEMP_SCRIPT
    echo "$@"                 >> $TEMP_SCRIPT
    echo "echo"               >> $TEMP_SCRIPT
    echo "echo 'Done'"        >> $TEMP_SCRIPT
    echo "read"               >> $TEMP_SCRIPT
    chmod +x $TEMP_SCRIPT
    open -a iTerm.app $TEMP_SCRIPT
}


# Encryption / decryption utilities.
# ----------------------------------

function set_password_for_encryption {
    echo "Please type your password:"
    export PASSWORD_FOR_ENCRYPTION=$(cat)
    echo "Your password is now \"$PASSWORD_FOR_ENCRYPTION\"."
}

function print_password_for_encryption {
    echo "Your password is \"$PASSWORD_FOR_ENCRYPTION\"."
}

function encrypt {
    if [ -z "$PASSWORD_FOR_ENCRYPTION" ]; then
        echo "Please set your password first, by running set_password_for_encryption"
    else
        # Reads plaintext from stdin.
        # Writes encrypted and base64-encoded cyphertext to stdout.
        openssl des -e -aes128 -k "$PASSWORD_FOR_ENCRYPTION" | base64
    fi
}

function decrypt {
    if [ -z "$PASSWORD_FOR_ENCRYPTION" ]; then
        echo "Please set your password first, by running set_password_for_encryption"
    else
        # Reads encrypted and base64-encoded cyphertext from stdin.
        # Writes plaintext to stdout.
        base64 -D | openssl des -d -aes128 -k "$PASSWORD_FOR_ENCRYPTION"
    fi
}

# ----------------------------------