.bashrc

   1 #!/bin/bash
   2 # ~/.bashrc: executed by bash(1) for non-login shells.
   3 # A basically sane bash environment.
   4 # Resources:
   5 # - https://github.com/rtomayko/dotfiles/blob/rtomayko/.bashrc
   6
   7 # ---------------------------------------------------------------------------
   8 #  BASICS
   9 # ---------------------------------------------------------------------------
  10
  11 # short-circuit for non-interactive sessions
  12 [ -z "$PS1" ] && return
  13
  14 # the basics
  15 : ${HOME=~}
  16 : ${LOGNAME=$(id -un)}
  17 : ${UNAME=$(uname)}
  18 # strip OS type and version under Cygwin (e.g. CYGWIN_NT-5.1 => Cygwin)
  19 UNAME=${UNAME/CYGWIN_*/Cygwin}
  20
  21 # complete hostnames from this file
  22 HOSTFILE=~/.ssh/known_hosts
  23
  24 # readline config
  25 INPUTRC=~/.inputrc
  26
  27 # if current $TERM isn't valid, fall-back to TERM=xterm-color or TERM=xterm
  28 case $(tput colors 2>&1) in
  29     tput* )
  30         export TERM=xterm-color
  31         case $(tput colors 2>&1) in
  32             tput* )
  33                 export TERM=xterm
  34                 ;;
  35         esac
  36         ;;
  37 esac
  38
  39 # ---------------------------------------------------------------------------
  40 #  SHELL OPTIONS
  41 # ---------------------------------------------------------------------------
  42
  43 # notify of bg job completion immediately
  44 set -o notify
  45
  46 # shell opts. see bash(1) for details
  47 shopt -s cdspell >/dev/null 2>&1
  48 shopt -s checkjobs >/dev/null 2>&1
  49 shopt -s checkwinsize >/dev/null 2>&1
  50 shopt -s extglob >/dev/null 2>&1
  51 shopt -s histappend >/dev/null 2>&1
  52 shopt -s hostcomplete >/dev/null 2>&1
  53 shopt -s interactive_comments >/dev/null 2>&1
  54 shopt -u mailwarn >/dev/null 2>&1
  55 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  56
  57 # don't check for new mail
  58 unset MAILCHECK
  59
  60 # disable core dumps
  61 ulimit -S -c 0
  62
  63 # default umask
  64 umask 0022
  65
  66 # ---------------------------------------------------------------------------
  67 # PATH
  68 # ---------------------------------------------------------------------------
  69
  70 # make sure $MANPATH has some sane defaults
  71 MANPATH="/usr/share/man:/usr/local/share/man:$MANPATH"
  72
  73 # include the various sbin's along with /usr/local/bin
  74 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  75 PATH="/usr/local/bin:$PATH"
  76
  77 # use $HOME specific bin and sbin
  78 path_start="$path_start:$HOME/bin"
  79 test -d "$HOME/sbin" && path_start="$path_start:$HOME/sbin"
  80
  81 # macOS homebrew: include non-prefixed coreutils
  82 if [ -d "/usr/local/opt/coreutils/libexec" ]; then
  83     path_start="$path_start:/usr/local/opt/coreutils/libexec/gnubin"
  84     manpath_start="$manpath_start:/usr/local/opt/coreutils/libexec/gnuman"
  85 fi
  86
  87 # SmartOS: local pkgin binaries
  88 if [ -d "/opt/local" ]; then
  89     path_start="$path_start:/opt/local/sbin:/opt/local/bin"
  90     manpath_start="$manpath_start:/opt/local/man"
  91 fi
  92 # SmartOS: local custom scripts
  93 if [ -d "/opt/custom" ]; then
  94     path_start="$path_start:/opt/custom/sbin:/opt/custom/bin"
  95     manpath_start="$manpath_start:/opt/custom/man"
  96 fi
  97 # SmartOS: SDC
  98 if [ -d "/smartdc" ]; then
  99     path_start="$path_start:/smartdc/bin:/opt/smartdc/bin:/opt/smartdc/agents/bin"
 100     manpath_start="$manpath_start:/smartdc/man"
 101 fi
 102 # SmartOS: native binaries, for OS/LX zones
 103 if [ -d "/native" ]; then
 104     path_end="$path_end:/native/usr/sbin:/native/usr/bin:/native/sbin:/native/bin"
 105     manpath_end="$manpath_end:/native/usr/share/man"
 106 fi
 107
 108 # python pip --user
 109 for python in "python" "python2" "python3"; do
 110     if [ -n "$(type -P $python)" ]; then
 111         pybin="$($python -m site --user-base)/bin"
 112         test -d "$pybin" && path_end="$path_end:$pybin"
 113     fi
 114 done
 115 unset python pybin
 116
 117 PATH="$path_start:$PATH:$path_end"
 118 MANPATH="$manpath_start:$MANPATH:$manpath_end"
 119 unset path_start path_end manpath_start manpath_end
 120
 121 # ---------------------------------------------------------------------------
 122 # ENVIRONMENT CONFIGURATION
 123 # ---------------------------------------------------------------------------
 124
 125 # detect interactive shell
 126 case "$-" in
 127     *i*) INTERACTIVE=yes ;;
 128     *)   unset INTERACTIVE ;;
 129 esac
 130
 131 # detect login shell
 132 case "$0" in
 133    -*) LOGIN=yes ;;
 134    *)  unset LOGIN ;;
 135 esac
 136
 137 # enable en_US locale w/ utf-8 encodings if not already
 138 # configured
 139 : ${LANG:="en_US.UTF-8"}
 140 : ${LANGUAGE:="en"}
 141 : ${LC_CTYPE:="en_US.UTF-8"}
 142 : ${LC_ALL:="en_US.UTF-8"}
 143 export LANG LANGUAGE LC_CTYPE LC_ALL
 144
 145 # ignore backups, CVS directories, python bytecode, vim swap files
 146 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 147
 148 # history stuff
 149 HISTCONTROL=ignoreboth
 150 HISTFILESIZE=10000
 151 HISTSIZE=10000
 152
 153 # ---------------------------------------------------------------------------
 154 # PAGER / EDITOR
 155 # ---------------------------------------------------------------------------
 156
 157 # see what we have to work with ...
 158 HAVE_VIM=$(command -v vim)
 159
 160 # EDITOR
 161 test -n "$HAVE_VIM" &&
 162     EDITOR=vim ||
 163     EDITOR=vi
 164 export EDITOR
 165
 166 # PAGER
 167 if test -n "$(command -v less)" ; then
 168     PAGER="less"
 169     MANPAGER="less"
 170     LESS="-FiRX"
 171     export LESS
 172 else
 173     PAGER=more
 174     MANPAGER="$PAGER"
 175 fi
 176 export PAGER MANPAGER
 177
 178 # ---------------------------------------------------------------------------
 179 # PROMPT
 180 # ---------------------------------------------------------------------------
 181
 182 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 183
 184 if [ "$UID" = 0 ]; then
 185     # root
 186     PS_C1="\[\033[1;31m\]"  # red
 187     PS_C2="\[\033[0;37m\]"  # grey
 188     PS_P="#"
 189 else
 190     case "$UNAME" in
 191         Cygwin)
 192             PS_C1="\[\033[0;32m\]"  # green
 193             PS_C2="\[\033[0;37m\]"  # grey
 194             ;;
 195         Darwin)
 196             PS_C1="\[\033[1;97m\]"  # white
 197             PS_C2="\[\033[0;37m\]"  # grey
 198             ;;
 199         SunOS)
 200             PS_C1="\[\033[1;96m\]"  # cyan
 201             PS_C2="\[\033[0;36m\]"  # cyan
 202             ;;
 203         *)
 204             PS_C1="\[\033[1;93m\]"  # yellow
 205             PS_C2="\[\033[0;33m\]"  # brown
 206     esac
 207     PS_P="\$"
 208 fi
 209
 210 prompt_simple() {
 211     unset PROMPT_COMMAND
 212     PS1="[\u@\h:\w]\$ "
 213     PS2="> "
 214 }
 215
 216 prompt_compact() {
 217     unset PROMPT_COMMAND
 218     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 219     PS2="> "
 220 }
 221
 222 prompt_color() {
 223     # if git and the git bash_completion scripts are installed, use __git_ps1()
 224     # to show current branch info.
 225     # - never show branch info for $HOME (dotfiles) repo.
 226     # - optionally hide branch info for git repo's with `bash.hidePrompt`
 227     #   config flag set. use the following to exclude a given repo:
 228     #     `git config --local --bool --add bash.hidePrompt true`
 229     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 230         home_canonical="$(test -n "$(type -P realpath)" && realpath $HOME || echo $HOME)"
 231         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 232                   test "$(git rev-parse --show-toplevel)" != "$home_canonical" &&
 233                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 234                   __git_ps1 "{\[\033[0;40;36m\]%s\[\033[0;90m\]}")'
 235         export GIT_PS1_SHOWDIRTYSTATE=1
 236     fi
 237     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 238     PS2="> "
 239 }
 240
 241 # ---------------------------------------------------------------------------
 242 # ALIASES
 243 # ---------------------------------------------------------------------------
 244
 245 # 'ls' helpers
 246 alias ll="ls -l"
 247 alias l.="ls -d .*"
 248 alias ll.="ls -ld .*"
 249 alias lla="ls -la"
 250
 251 # use 'git diff --no-index' as a prettier 'diff' alternative (if available)
 252 test -n "$(type -P git)" && alias diff="git diff --no-index"
 253
 254 # alias 'vi' to 'vim' if Vim is installed
 255 test -n "$(type -P vim)" && alias vi='vim'
 256
 257 # alias csh-style "rebash" to bash equivalent
 258 alias rehash="hash -r"
 259
 260 # svn-wrapper
 261 alias svn=svn-wrapper
 262
 263 if [ "$UNAME" = SunOS ]; then
 264     # Solaris: use GNU versions of coreutils
 265     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 266     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 267     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 268 fi
 269
 270 # ---------------------------------------------------------------------------
 271 # BASH COMPLETION
 272 # ---------------------------------------------------------------------------
 273
 274 test -z "$BASH_COMPLETION" && {
 275     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 276     test -n "$PS1" && test $bmajor -gt 1 && {
 277         # search for a bash_completion file to source
 278         for f in /usr/local/etc/bash_completion \
 279                  /usr/pkg/etc/bash_completion \
 280                  /opt/local/etc/bash_completion \
 281                  /etc/bash_completion \
 282                  /etc/bash/bash_completion
 283         do
 284             test -f $f && {
 285                 . $f
 286                 break
 287             }
 288         done
 289     }
 290     unset bash bmajor bminor
 291 }
 292
 293 # restore some key environment variables which may have been unset
 294 # by bash_completion script
 295 : ${HOME=~}
 296 : ${LOGNAME=$(id -un)}
 297 : ${UNAME=$(uname)}
 298
 299 # override and disable tilde expansion
 300 _expand() {
 301     return 0
 302 }
 303
 304 # ---------------------------------------------------------------------------
 305 # LS AND DIRCOLORS
 306 # ---------------------------------------------------------------------------
 307
 308 # we always pass these to ls(1)
 309 LS_COMMON="-p"
 310
 311 # if the dircolors utility is available, set that up for ls
 312 dircolors="$(type -P gdircolors dircolors | head -1)"
 313 test -n "$dircolors" && {
 314     COLORS=/etc/DIR_COLORS
 315     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 316     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 317     test ! -e "$COLORS"               && COLORS=
 318     eval `$dircolors --sh $COLORS`
 319 }
 320 unset dircolors
 321
 322 # enable color ls output if available
 323 test -n "$COLORS" &&
 324     LS_COMMON="--color=auto $LS_COMMON"
 325
 326 # setup the main ls alias if we've established common args
 327 test -n "$LS_COMMON" &&
 328     alias ls="command ls $LS_COMMON"
 329
 330 # setup color grep output if available
 331 if [ -n "$COLORS" ]; then
 332     case "$UNAME" in
 333         "SunOS")
 334             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 335             test -x /opt/local/bin/grep && alias grep="/opt/local/bin/grep --color=always"
 336             ;;
 337         *)
 338             alias grep="command grep --color=always"
 339             ;;
 340     esac
 341     # older versions of grep only support a singular highlight color
 342     export GREP_COLOR='1;32'
 343     # newer versions of grep have more flexible color configuration
 344     export GREP_COLORS='fn=36:ln=33:ms=1;32'
 345 fi
 346
 347 # ---------------------------------------------------------------------------
 348 # MISC FUNCTIONS
 349 # ---------------------------------------------------------------------------
 350
 351 # set 'screen' window title
 352 settitle_screen() {
 353     printf "\033k%s\033\\" "$@"
 354 }
 355 # set 'xterm' window title
 356 settitle_window() {
 357     printf "\033]0;%s\007" "$@"
 358 }
 359
 360 # push SSH public key to another box
 361 push_ssh_cert() {
 362     local _host
 363     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 364     for _host in "$@";
 365     do
 366         echo $_host
 367         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 368     done
 369 }
 370
 371 # ---------------------------------------------------------------------------
 372 # PATH MANIPULATION FUNCTIONS
 373 # ---------------------------------------------------------------------------
 374
 375 # Usage: pls [<var>]
 376 # List path entries of PATH or environment variable <var>.
 377 pls () { eval echo \$${1:-PATH} | tr ':' '\n'; }
 378
 379 # Usage: ppop [-n <num>] [<var>]
 380 # Pop <num> entries off the end of PATH or environment variable <var>.
 381 ppop () {
 382     local n=1
 383     [ "$1" = "-n" ] && { n=$2; shift 2; }
 384     local i=0 var=${1:-PATH}
 385     local list=$(eval echo \$$var)
 386     while [ $i -lt $n ]; do
 387         list=${list%:*}
 388         i=$(( i + 1 ))
 389     done
 390     eval "$var='$list'"
 391 }
 392
 393 # Usage: ppush <path> [<var>]
 394 # Push an entry onto the end of PATH or enviroment variable <var>.
 395 ppush () {
 396     local var=${2:-PATH}
 397     local list=$(eval echo \$$var)
 398     local i=0 dir=""
 399     IFS=':' read -a dirs <<< "$1"
 400     for ((i=0; i<${#dirs[@]}; i++)); do
 401         dir=$(eval echo "${dirs[$i]}")
 402         [ ! -d "$dir" ] && continue
 403         [ -n "$list" ] && list="$list:$dir" || list="$dir"
 404     done
 405     eval "$var='$list'"
 406 }
 407
 408 # Usage: pinsert <path> [<var>]
 409 # Push an entry onto the start of PATH or enviroment variable <var>.
 410 pinsert () {
 411     local var=${2:-PATH}
 412     local list=$(eval echo \$$var)
 413     local i=0 dir=""
 414     IFS=':' read -a dirs <<< "${1}"
 415     for ((i=${#dirs[@]}-1; i>=0; i--)); do
 416         dir=$(eval echo "${dirs[$i]}")
 417         [ ! -d "$dir" ] && continue
 418         [ -n "$list" ] && list="$dir:$list" || list="$dir"
 419     done
 420     eval "$var='$list'"
 421 }
 422
 423 # Usage: prm <path> [<var>]
 424 # Remove <path> from PATH or environment variable <var>.
 425 prm () { eval "${2:-PATH}='$(pls $2 | grep -v "^$1\$" | tr '\n' ':')'"; }
 426
 427 # Usage: puniq [<pathlist>]
 428 # Remove duplicate entries from a PATH style value while retaining
 429 # the original order. Use PATH if no <path> is given.
 430 #
 431 # Example:
 432 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 433 #   /usr/bin:/usr/local/bin
 434 puniq () { echo "$1" | tr ':' '\n' | grep -v "^$" | nl | sort -u -k 2,2 | sort -n | cut -f 2- | paste -s -d ':' -; }
 435
 436 # ---------------------------------------------------------------------------
 437 # USER SHELL ENVIRONMENT
 438 # ---------------------------------------------------------------------------
 439
 440 # source ~/.shenv now if it exists
 441 test -r ~/.shenv &&
 442     . ~/.shenv
 443
 444 # condense PATH entries
 445 PATH=$(puniq "$PATH")
 446 MANPATH=$(puniq "$MANPATH")
 447
 448 # use the color prompt by default when interactive
 449 test -n "$PS1" &&
 450     prompt_color
 451
 452 # fzf
 453 export FZF_DEFAULT_COMMAND='rg --files --no-ignore --hidden --follow -g "!{.git,node_modules,*.swp,.venv}/*" 2> /dev/null'
 454 export FZF_DEFAULT_OPTS='--bind J:down,K:up --reverse --ansi --multi'
 455
 456 # ---------------------------------------------------------------------------
 457 # MOTD / FORTUNE
 458 # ---------------------------------------------------------------------------
 459
 460 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 461     # get current uname and uptime (if exists on this host)
 462     # strip any leading whitespace from uname and uptime commands
 463     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 464     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 465     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 466         echo " --"
 467         test -n "$t_uname" && echo $t_uname
 468         test -n "$t_uptime" && echo $t_uptime
 469         echo " --"
 470     fi
 471     unset t_uname t_uptime
 472 }
 473
 474 # vim: ts=4 sts=4 shiftwidth=4 expandtab