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 '\e\\'
   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"'\[\e[01;31m\]\u@\h\[\e[00m\]:\[\e[01;34m\]\w\[\e[00m\]'
 134 PS1="$PS1"'\[\e[01;36m\]$(my_git_ps1 ; my_hg_ps1 ; my_svn_ps1)\[\e[00m\]'
 135 PS1="$PS1"'\n\$ '
 136
 137
 138 #################################
 139 # Display return codes on error #
 140 #################################
 141
 142 function print_exit_code {
 143     local exit_msg="\e[01;33mexit code: $?\e[00m"
 144     if [ -z "${BASH_SOURCE[1]}" ]; then
 145         echo -e "$exit_msg"
 146     fi
 147 }
 148 trap print_exit_code ERR
 149
 150
 151
 152 ####################
 153 # Function aliases #
 154 ####################
 155
 156 # This prevents long/ugly command lines from showing up in xterm titles
 157 function aliasf {
 158     eval "function $1 { $2 \$@; }"
 159 }
 160
 161
 162 ##########################
 163 # ls aliases and colours #
 164 ##########################
 165
 166 # GNU ls colours
 167 eval "$(TERM=xterm dircolors 2> /dev/null)"
 168
 169 # BSD ls colours
 170 export LSCOLORS="ExFxCxDxBxEGEDABAGACAD"
 171
 172 # Lets find the ls
 173 if ls --color=auto -v &> /dev/null; then
 174     alias ls='ls --color=auto -v'
 175 elif gls --color=auto -v &> /dev/null; then
 176     alias ls='gls --color=auto -v'
 177 elif ls -G &> /dev/null; then
 178     alias ls='ls -G'
 179 else
 180     alias ls='ls -F'
 181 fi
 182 alias ll='ls -hlF'
 183 alias la='ls -ha'
 184 alias  l='ls -halF'
 185
 186 ##############
 187 # ps aliases #
 188 ##############
 189
 190 alias _psresources='ps -wAo pid,user,%cpu,%mem,stat,start,time,args'
 191 if [ "$(uname)" = "Linux" ]; then
 192     aliasf pscpu '_psresources --sort -%cpu|less -S'
 193     aliasf psmem '_psresources --sort -%mem|less -S'
 194     aliasf pstree 'ps --forest -weo pid,user:16,args --sort start_time|less -S'
 195     aliasf pstime 'ps -wAo pid,user,lstart,args --sort start_time|less -S'
 196 else
 197     aliasf pscpu '_psresources -r|less -S'
 198     aliasf psmem '_psresources -m|less -S'
 199     aliasf pstime 'ps -wAo pid,user,lstart,args|less -S'
 200 fi
 201
 202 #################
 203 # Other aliases #
 204 #################
 205
 206 alias f='find . -iname'
 207 if echo x | grep -q --color=auto x &> /dev/null; then
 208     alias grep='grep --color=auto'
 209 fi
 210 alias rg='rg -p'
 211 alias bc='bc -ql'
 212 alias watch='watch -n1'
 213 alias sudo='sudo ' # ability to use aliases with sudo
 214 aliasf sudosu 'sudo su -l -s /bin/bash'
 215 aliasf python 'PYTHONSTARTUP=~/.pythonrc.py python3'
 216 aliasf webshare 'python3 -mhttp.server'
 217
 218 if ! command -v pbcopy &> /dev/null; then
 219     alias pbcopy='xsel --clipboard --input'
 220     alias pbcopym='xsel --input'
 221     alias pbpaste='xsel --clipboard --output'
 222     alias pbpastem='xsel --output'
 223 fi
 224
 225 # man with coloured headings and a terminal title
 226 function man {
 227     env \
 228         LESS_TERMCAP_md=$'\E[01;38;5;74m' \
 229         LESS_TERMCAP_me=$'\E[0m' \
 230         LESS_TERMCAP_us=$'\E[04;38;5;146m' \
 231         LESS_TERMCAP_ue=$'\E[0m' \
 232         LC_CTYPE=C \
 233     man "$@"
 234 }
 235
 236 # Creates the directory if it doesn't exist, and changes into it
 237 function mcd {
 238     # shellcheck disable=SC2164
 239     mkdir -p "$1" && cd "$1"
 240 }
 241
 242 # Sets the nice and ionice priorities for the current shell to the lowest values
 243 function slowshell {
 244     ionice -c 3 -p $$
 245     renice -n 19 -p $$
 246 }
 247
 248 # SSH to an unknown host and print the new known_hosts entry
 249 function ssh_new {
 250     local new_known_hosts_file
 251     new_known_hosts_file="$(mktemp)"
 252     ssh -o UserKnownHostsFile="$new_known_hosts_file" "$@" echo 'Connection ok'
 253     cat "$new_known_hosts_file"
 254     rm -f "$new_known_hosts_file"
 255 }
 256
 257 # SSH without verifying host key
 258 function ssh_unsafe {
 259     ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null "$@"
 260 }
 261
 262
 263 ##################
 264 # Editor aliases #
 265 ##################
 266
 267 if emacsclient --version &> /dev/null; then
 268     export ALTERNATE_EDITOR='vim'
 269     export EDITOR='emacsclient --tty'
 270
 271     if [[ "$TERM" == screen* ]]; then
 272         aliasf edit 'emacsclient --tty'
 273     else
 274         aliasf edit 'emacsclient --create-frame --no-wait'
 275     fi
 276 else
 277     export EDITOR='vim'
 278     aliasf edit 'vim'
 279 fi
 280
 281
 282 #########################
 283 # Optional local config #
 284 #########################
 285
 286 [ -r ~/.bashrc_local ] && source ~/.bashrc_local
 287
 288
 289 ##################
 290 # xterm titlebar #
 291 ##################
 292
 293 # When at a prompt display `workingdir (hostname)`
 294 function print_title_prompt {
 295     echo -ne "\e]0;bash:${PWD/$HOME/\~} ($(hostname -s))\a"
 296
 297     if [[ "$TERM" == screen* ]]; then
 298         echo -ne '\ekbash\e\\'
 299     fi
 300 }
 301 PROMPT_COMMAND=print_title_prompt
 302
 303 # Display the command about to be executed
 304 # This must go at the end of bashrc to avoid running the trap on commands in the bashrc
 305 function print_title_exec {
 306     [ "$BASH_COMMAND" = "$PROMPT_COMMAND" ] && return
 307
 308     echo -ne '\e]0;'
 309     echo -n "$BASH_COMMAND" | tr -cd '[:graph:] '
 310     echo -n " ($(hostname -s))"
 311     echo -ne '\a'
 312
 313     if [[ "$TERM" == screen* ]]; then
 314         echo -ne '\ek'
 315         echo -n "$BASH_COMMAND" | \
 316             sed 's/^sudo //' | \
 317             cut -d' ' -f1 | \
 318             tr -cd '[:graph:]'
 319         echo -ne '\e\\'
 320     fi
 321 }
 322 trap print_title_exec DEBUG
 323
 324
 325 ###########
 326 # The end #
 327 ###########