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# .bashrc should contain ONLY statements that apply to interactive bash shells
# Bashisms are obviously appropriate here
# Try not to rely on non-POSIX tools (like GNU grep), or that a given optional
# package (like SSH) is installed.
# An exception: when it's more helpful for a command to fail than for it to be
# undefined
# If possible, test for non-POSIX extensions before using in this file
# This file may be sourced multiple times; all settings should be idempotent
# We use this to find paths inside dhd
export DHD=${DHD:-"$HOME/.dhd"}
if test -z "$MRL_PROFILE_GUARD"; then
. $DHD/hbase/.profile
# A pipeline with a failing command at the beginning will set $? to a failure even if later piped commands succeed
set -o pipefail
# glob filenames in a case-insensitive manner
# NOT the same as tab-complete case insensitively - you must add
# set completion-ignore-case on
# in .inputrc for that.
shopt -s nocaseglob
# Fix some problems where lines wrap incorrectly
shopt -s checkwinsize
# When writing the history file, append this session's commands to the file
# (By default, it will overwrite the history file with commands from this session)
shopt -s histappend
if ls --version 2>/dev/null | grep -q GNU; then
# GNU ls command
alias ls="ls -F -H --color"
elif ls -h -G >/dev/null 2>&1; then
# BSD ls commands, such as FreeBSD or macOS
alias ls="ls -F -h -G"
# POSIX supported
alias ls="ls -F"
alias lsa='ls -a'
alias lsl='ls -a -l'
alias lsli='lsl -i' # lsl+inodes
alias l1='ls -1'
alias llm='lsl -r -t' # lsl+ sort by modified time (lastest at bottom)
# View manpages in on macOS
test -e "/Applications/" && alias previewman='man -t "$@" | open -g -f -a /Applications/'
# Launch QuickLook from the command line (^c will kill it and return to prompt)
cmdavail qlmanage && alias ql='qlmanage -p 2>/dev/null'
# Fucking environment variables on macOS
cmdavail launchctl && test "$LANG" && launchctl setenv LC_ALL "$LANG"
# Debian has weird ideas about things sometimes
cmdavail 'ack-grep' && alias ack='ack-grep'
df -h >/dev/null 2>&1 && alias df="df -h"
alias ..="cd .."
alias c=clear
alias h=history
alias wcl="wc -l"
alias omg="echo wtf"
alias .b='. $HOME/.profile; . $HOME/.bashrc'
cmdavail "xscreensaver-command" && alias xslock="xscreensaver-command -lock"
alias xttitle='printf "\e]2;""$@""\007"'
alias ddate="date +%Y%m%d"
alias m=more
alias l=less
cmdavail zless && alias zl=zless
export LESS="-icdMR"
alias wh="type -a" # type -a is a bashism
alias dush='du -sh' # du -h is a POSIX extension
# This is dumb but I can never fucking remember that tcsh's rehash is bash's hash -r
# I haven't used tcsh in over a decade jesus christ
alias rehash='hash -r'
# Test for a grep that supports --color=auto, which includes GNU, FreeBSD, and macOS greps
if echo x | grep -q --color=auto x 2>/dev/null; then
alias grep="grep --color=auto"
alias psa="ps -A"
psaf() {
# (the second call to grep prevents this function from being returned as a hit)
psa | grep -i "$1" | grep -v "grep -i $1"
# For my 'scr' command
export SCR_DEFAULT_SESSION="megaframe"
# Aliases to make it easy to connect over ssh or scp WITHOUT CHECKING HOST KEYS
alias sshtel="ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
alias scptel="scp -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
uploadid() {
ssh "$@" 'mkdir -p $HOME/.ssh && cat - >> $HOME/.ssh/authorized_keys' < "$HOME/.ssh/"
alias canhazip='curl'
# gets public ip via dns. can help for when behind pay hotspots.
# via / @brimston3
# some hotspots fuck with udp/53; you might try dig +tcp if that happens
alias dnsip='dig +short'
# Colorize man pages
# See:
man() {
env \
LESS_TERMCAP_md=$'\e[1;36m' \
LESS_TERMCAP_me=$'\e[0m' \
LESS_TERMCAP_se=$'\e[0m' \
LESS_TERMCAP_so=$'\e[1;40;92m' \
LESS_TERMCAP_ue=$'\e[0m' \
LESS_TERMCAP_us=$'\e[1;32m' \
man "$@"
cdd() {
if test $# -ne 2; then
Usage: cdd [-h] <PATTERN> <REPLACEMENT>
Replace a segment of the CWD matched by PATTERN with REPLACEMENT
-h | --help: Print help and exit
PATTERN: A pattern in the current CWD to replace
REPLACEMENT: The replacement for PATTERN
[~/projects/foobar/src/lib/whatever/]$ cdd foobar bazbar
This _must_ be a shell function/alias because it uses 'cd'
cd "$( pwd | sed -e s/"$1"/"$2"/ )"
# The number of lines to save to _memory_ in a history list
# The number of lines to save to _disk_ in a history list
# Formerly INFINITE, set to finite value to prevent secrets from persisting forever
export HISTFILESIZE="5000"
# If a command starts with a space, do not save it in history
export HISTCONTROL="ignorespace"
# Add a timestamp to history entry
export HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S "
# Completion settings
# on macOS, 'brew install bash-completion' is required
test -e $HOMEBREWDIR/etc/bash_completion && source $HOMEBREWDIR/etc/bash_completion
cmdavail doctl && source <(doctl completion bash)
cmdavail aws aws_completer && complete -C aws_completer aws
# Prompt
# NOTE: The bash prompt keeps track of its length, in characters, in order to
# propertly wrap text if the command line being entered gets too long.
# Unfortunately, it does so indiscriminately - even non-printable characters,
# which by definition do not take up space on the line, are counted by
# default.
# Working around this problem requires two components:
# 1. checkwinsize (set above)
# 2. wrapping sequences of non-printable characters in \[ and \]
# My `ansi` script is supposed to handle #2, but unfortunately that isn't
# working the way I expected, so I had to resort to adding the wrapper
# characters myself below.
# Additionally, I set these $ansi_* variables below so that the ansi script is
# only being called once, in order to speed up the prompt.
ansi_reset=$(ansi mode=reset)
ansi_bold=$(ansi mode=bold)
ansi_fg_white=$(ansi fg=white)
ansi_fg_green=$(ansi fg=green)
ansi_fg_gray=$(ansi mode=unbold fg=white)
ansi_fg_red=$(ansi fg=red)
ansi_fg_blue=$(ansi fg=blue)
ansi_fg_magenta=$(ansi fg=magenta)
bashprompt() {
# Gather the exit code first, in case something resets it
# Save the shell's history
history -a
# Reset any previous settings, in case last output did not
if test "$exitcoderaw" -eq 0 || test -z "$exitcoderaw"; then
# Covers a case where no command has been previously executed
# Allow setting PROMPT_HOSTNAME_OVERRIDE for situations where the hostname
# is not a useful way to identify the host
# For instance, the hostname may be automatically generated by Docker
jobcountraw=$(jobs | wc -l | sed 's/ *//g')
if test "$jobcountraw" -gt 0 2> /dev/null; then
# lcop = last character of prompt
# Use bash's $EUID variable to avoid having to shell out to 'id'
if test "$EUID" -eq 0; then
export PS1="${init}${date} ${exitcode} ${hostname} ${jobcount} ${workdir} ${lcop} "
export PROMPT_COMMAND=bashprompt
if test -d "$HOME/.bashrc.d"; then
for script in $(find "$HOME/.bashrc.d" -type f); do
. "$script"