code.delx.au - dotfiles/blob - .bashrc

   1 # shellcheck disable=SC1090 disable=SC1091 # -- Can't follow non-constant source
   2 # shellcheck disable=SC1003 # -- Don't complain about '\033\\'
   3
   4 ###########################
   5 # Settings for all shells #
   6 ###########################
   7
   8 # Set umask, depending on the user ID
   9 if [ "$(id -un)" = "root" ]; then
  10     umask 0022
  11 else
  12     umask 0007
  13 fi
  14
  15 # Add ~/bin and subdirs to PATH if needed
  16 while read -r p; do
  17     echo "$PATH" | tr ':' '\n' | grep -qxF "$p" || PATH="${p}:$PATH"
  18 done < <(find -L ~/bin -maxdepth 1 -type d 2> /dev/null)
  19
  20 # Set EMAIL from the freedesktop environment.d
  21 if ls ~/.config/environment.d/*.conf &> /dev/null; then
  22     eval "$(awk -F= '{print $0 ";export " $1}' ~/.config/environment.d/*.conf)"
  23 fi
  24
  25 # Pick up SSH agent socket
  26 if [ -z "$SSH_AUTH_SOCK" ]; then
  27     if [ -r ~/.ssh-agent.env ]; then
  28         source ~/.ssh-agent.env
  29     else
  30         SSH_AUTH_SOCK="/run/user/$(id -u)/keyring/ssh"
  31         export SSH_AUTH_SOCK
  32     fi
  33 fi
  34
  35
  36 ###########################
  37 # Interactive shells only #
  38 ###########################
  39
  40 if [ -z "${PS1}" ]; then
  41     return
  42 fi
  43
  44
  45 ################
  46 # bash options #
  47 ################
  48
  49 # Bash should check the terminal size after every command terminates
  50 shopt -s checkwinsize
  51
  52 # Don't attempt to tab-complete an empty line
  53 shopt -s no_empty_cmd_completion
  54
  55 # Prevent overwriting existing files on stdout redirection
  56 set -o noclobber
  57
  58 # Better history
  59 shopt -s histappend
  60 shopt -s cmdhist
  61 export HISTCONTROL='erasedups:ignoredups:ignorespace'
  62 export HISTSIZE='100000'
  63 export HISTTIMEFORMAT='%F %T '
  64
  65 [ -r /etc/bash_completion ] && source /etc/bash_completion
  66
  67
  68 ###############
  69 # Pager setup #
  70 ###############
  71
  72 export PAGER='less'
  73 export LESS='RS'
  74
  75
  76 ##################
  77 # Terminal setup #
  78 ##################
  79
  80 # Disable CTRL-s / CTRL-q
  81 stty -ixon
  82
  83 # Use dark background colors in apps like vim
  84 export COLORFGBG='15;0'
  85
  86 #############
  87 # Fancy PS1 #
  88 #############
  89
  90 # Revision control status for git, hg, svn
  91
  92 function find_up_exists {
  93     local d="$PWD"
  94     while [ -n "$d" ]; do
  95         if [ -e "$d/$1" ]; then
  96             return 0
  97         fi
  98         d="${d%/*}"
  99     done
 100     return 1
 101 }
 102
 103 for p in /usr/lib/git-core/git-sh-prompt \
 104          /usr/share/git/completion/git-prompt.sh \
 105          /usr/local/share/git-core/contrib/completion/git-prompt.sh
 106 do
 107     [ -r "$p" ] && source "$p" && break
 108 done
 109
 110 function my_git_ps1 {
 111     find_up_exists .git || return
 112     GIT_PS1_SHOWDIRTYSTATE=1 \
 113     GIT_PS1_SHOWUNTRACKEDFILES=1 \
 114     __git_ps1 ' (%s)' 2> /dev/null
 115 }
 116
 117 function my_hg_ps1 {
 118     find_up_exists .hg || return
 119     local status
 120     status="$(hg status | cut -c1 | sort -u | tr -d ' \n')"
 121     echo -n " ($status)"
 122 }
 123
 124 function my_svn_ps1 {
 125     find_up_exists .svn || return
 126     local status
 127     status="$(svn status --ignore-externals 2> /dev/null | cut -c1 | sort -u | tr -d ' \n')"
 128     [ -n "$status" ] && echo -n " ($status)"
 129 }
 130
 131 # Two line prompt
 132 PS1=''
 133 PS1="$PS1"'\[\033[01;31m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]'
 134 PS1="$PS1"'\[\033[01;36m\]$(my_git_ps1 ; my_hg_ps1 ; my_svn_ps1)\[\033[00m\]'
 135 PS1="$PS1"'\n\$ '
 136
 137
 138 #################################
 139 # Display return codes on error #
 140 #################################
 141
 142 function print_exit_code {
 143     _exit_msg="\\033[01;33mexit code: $?\\033[00m"
 144     if [ -z "${BASH_SOURCE[1]}" ]; then
 145         echo -e "$_exit_msg"
 146     fi
 147     unset _exit_msg
 148 }
 149 trap print_exit_code ERR
 150
 151
 152
 153 ####################
 154 # Function aliases #
 155 ####################
 156
 157 # This prevents long/ugly command lines from showing up in xterm titles
 158 function aliasf {
 159     eval "function $1 { $2 \$@; }"
 160 }
 161
 162
 163 ##########################
 164 # ls aliases and colours #
 165 ##########################
 166
 167 # GNU ls colours
 168 eval "$(TERM=xterm dircolors 2> /dev/null)"
 169
 170 # BSD ls colours
 171 export LSCOLORS="ExFxCxDxBxEGEDABAGACAD"
 172
 173 # Lets find the ls
 174 if ls --color=auto -v &> /dev/null; then
 175     alias ls='ls --color=auto -v'
 176 elif gls --color=auto -v &> /dev/null; then
 177     alias ls='gls --color=auto -v'
 178 elif ls -G &> /dev/null; then
 179     alias ls='ls -G'
 180 else
 181     alias ls='ls -F'
 182 fi
 183 alias ll='ls -hlF'
 184 alias la='ls -ha'
 185 alias  l='ls -halF'
 186
 187 ##############
 188 # ps aliases #
 189 ##############
 190
 191 alias _psresources='ps -wAo pid,user,%cpu,%mem,stat,start,time,args'
 192 if [ "$(uname)" = "Linux" ]; then
 193     aliasf pscpu '_psresources --sort -%cpu|less -S'
 194     aliasf psmem '_psresources --sort -%mem|less -S'
 195     aliasf pstree 'ps --forest -weo pid,user:16,args --sort start_time|less -S'
 196     aliasf pstime 'ps -wAo pid,user,lstart,args --sort start_time|less -S'
 197 else
 198     aliasf pscpu '_psresources -r|less -S'
 199     aliasf psmem '_psresources -m|less -S'
 200     aliasf pstime 'ps -wAo pid,user,lstart,args|less -S'
 201 fi
 202
 203 #################
 204 # Other aliases #
 205 #################
 206
 207 alias f='find . -iname'
 208 if echo x | grep -q --color=auto x &> /dev/null; then
 209     alias grep='grep --color=auto'
 210 fi
 211 alias rg='rg -p'
 212 alias bc='bc -ql'
 213 alias watch='watch -n1'
 214 alias sudo='sudo ' # ability to use aliases with sudo
 215 aliasf sudosu 'sudo su -l -s /bin/bash'
 216 aliasf python 'PYTHONSTARTUP=~/.pythonrc.py python3'
 217 aliasf webshare 'python3 -mhttp.server'
 218
 219 if ! command -v pbcopy &> /dev/null; then
 220     alias pbcopy='xsel --clipboard --input'
 221     alias pbcopym='xsel --input'
 222     alias pbpaste='xsel --clipboard --output'
 223     alias pbpastem='xsel --output'
 224 fi
 225
 226 # man with coloured headings and a terminal title
 227 function man {
 228     env \
 229         LESS_TERMCAP_md=$'\E[01;38;5;74m' \
 230         LESS_TERMCAP_me=$'\E[0m' \
 231         LESS_TERMCAP_us=$'\E[04;38;5;146m' \
 232         LESS_TERMCAP_ue=$'\E[0m' \
 233         LC_CTYPE=C \
 234     man "$@"
 235 }
 236
 237 # Creates the directory if it doesn't exist, and changes into it
 238 function mcd {
 239     # shellcheck disable=SC2164
 240     mkdir -p "$1" && cd "$1"
 241 }
 242
 243 # Sets the nice and ionice priorities for the current shell to the lowest values
 244 function slowshell {
 245     ionice -c 3 -p $$
 246     renice -n 19 -p $$
 247 }
 248
 249 # SSH to an unknown host and print the new known_hosts entry
 250 function ssh_new {
 251     local new_known_hosts_file
 252     new_known_hosts_file="$(mktemp)"
 253     ssh -o UserKnownHostsFile="$new_known_hosts_file" "$@" echo 'Connection ok'
 254     cat "$new_known_hosts_file"
 255     rm -f "$new_known_hosts_file"
 256 }
 257
 258 # SSH without verifying host key
 259 function ssh_unsafe {
 260     ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null "$@"
 261 }
 262
 263
 264 ##################
 265 # Editor aliases #
 266 ##################
 267
 268 if emacsclient --version &> /dev/null; then
 269     export ALTERNATE_EDITOR='vim'
 270     export EDITOR='emacsclient --tty'
 271
 272     if [[ "$TERM" == screen* ]]; then
 273         aliasf edit 'emacsclient --tty'
 274     else
 275         aliasf edit 'emacsclient --create-frame --no-wait'
 276     fi
 277 else
 278     export EDITOR='vim'
 279     aliasf edit 'vim'
 280 fi
 281
 282
 283 #########################
 284 # Optional local config #
 285 #########################
 286
 287 [ -r ~/.bashrc_local ] && source ~/.bashrc_local
 288
 289
 290 ##################
 291 # xterm titlebar #
 292 ##################
 293
 294 # When at a prompt display `hostname:workingdir`
 295 function print_title_prompt {
 296     echo -ne "\\033]0;$(hostname|cut -d. -f1):${PWD/$HOME/\~}\\007"
 297
 298     if [[ "$TERM" == screen* ]]; then
 299         echo -ne '\033kbash\033\\'
 300     fi
 301 }
 302 PROMPT_COMMAND=print_title_prompt
 303
 304 # Display the command about to be executed
 305 # This must go at the end of bashrc to avoid running the trap on commands in the bashrc
 306 function print_title_exec {
 307     [ "$BASH_COMMAND" = "$PROMPT_COMMAND" ] && return
 308
 309     echo -ne '\033]0;'
 310     echo -n "$BASH_COMMAND" | tr -cd '[:graph:] '
 311     echo -ne '\007'
 312
 313     if [[ "$TERM" == screen* ]]; then
 314         echo -ne '\033k'
 315         echo -n "$BASH_COMMAND" | \
 316             sed 's/^sudo //' | \
 317             cut -d' ' -f1 | \
 318             tr -cd '[:graph:]'
 319         echo -ne '\033\\'
 320     fi
 321 }
 322 trap print_title_exec DEBUG
 323
 324
 325 ###########
 326 # The end #
 327 ###########