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/share/git-core/contrib/completion/git-prompt.sh \
 106          /usr/local/share/git-core/contrib/completion/git-prompt.sh
 107 do
 108     [ -r "$p" ] && source "$p" && break
 109 done
 110
 111 function my_git_ps1 {
 112     find_up_exists .git || return
 113     GIT_PS1_SHOWDIRTYSTATE=1 \
 114     GIT_PS1_SHOWUNTRACKEDFILES=1 \
 115     __git_ps1 ' (%s)' 2> /dev/null
 116 }
 117
 118 function my_hg_ps1 {
 119     find_up_exists .hg || return
 120     local status
 121     status="$(hg status | cut -c1 | sort -u | tr -d ' \n')"
 122     echo -n " ($status)"
 123 }
 124
 125 function my_svn_ps1 {
 126     find_up_exists .svn || return
 127     local status
 128     status="$(svn status --ignore-externals 2> /dev/null | cut -c1 | sort -u | tr -d ' \n')"
 129     [ -n "$status" ] && echo -n " ($status)"
 130 }
 131
 132 # Two line prompt
 133 PS1=''
 134 PS1="$PS1"'\[\e[01;31m\]\u@\h\[\e[00m\]:\[\e[01;34m\]\w\[\e[00m\]'
 135 PS1="$PS1"'\[\e[01;36m\]$(my_git_ps1 ; my_hg_ps1 ; my_svn_ps1)\[\e[00m\]'
 136 PS1="$PS1"'\n\$ '
 137
 138
 139 #################################
 140 # Display return codes on error #
 141 #################################
 142
 143 function print_exit_code {
 144     local exit_code="$?"
 145     if [ -z "${BASH_SOURCE[1]}" ]; then
 146         printf '\e[01;33mexit code: %s\e[00m\n' \
 147             "$exit_code"
 148     fi
 149 }
 150 trap print_exit_code ERR
 151
 152
 153
 154 ####################
 155 # Function aliases #
 156 ####################
 157
 158 # This prevents long/ugly command lines from showing up in xterm titles
 159 function aliasf {
 160     eval "function $1 { $2 \$@; }"
 161 }
 162
 163
 164 ##########################
 165 # ls aliases and colours #
 166 ##########################
 167
 168 # GNU ls colours
 169 eval "$(TERM=xterm dircolors 2> /dev/null)"
 170
 171 # BSD ls colours
 172 export LSCOLORS="ExFxCxDxBxEGEDABAGACAD"
 173
 174 # Lets find the ls
 175 if ls --color=auto -v &> /dev/null; then
 176     alias ls='ls --color=auto -v'
 177 elif gls --color=auto -v &> /dev/null; then
 178     alias ls='gls --color=auto -v'
 179 elif ls -G &> /dev/null; then
 180     alias ls='ls -G'
 181 else
 182     alias ls='ls -F'
 183 fi
 184 alias ll='ls -hlF'
 185 alias la='ls -ha'
 186 alias  l='ls -halF'
 187
 188 ##############
 189 # ps aliases #
 190 ##############
 191
 192 alias _psresources='ps -wAo pid,user,%cpu,%mem,stat,start,time,args'
 193 if [ "$(uname)" = "Linux" ]; then
 194     aliasf pscpu '_psresources --sort -%cpu|less -S'
 195     aliasf psmem '_psresources --sort -%mem|less -S'
 196     aliasf pstree 'ps --forest -weo pid,user:16,args --sort start_time|less -S'
 197     aliasf pstime 'ps -wAo pid,user,lstart,args --sort start_time|less -S'
 198 else
 199     aliasf pscpu '_psresources -r|less -S'
 200     aliasf psmem '_psresources -m|less -S'
 201     aliasf pstime 'ps -wAo pid,user,lstart,args|less -S'
 202 fi
 203
 204 #################
 205 # Other aliases #
 206 #################
 207
 208 alias f='find . -iname'
 209 if echo x | grep -q --color=auto x &> /dev/null; then
 210     alias grep='grep --color=auto'
 211 fi
 212 alias rg='rg -p'
 213 alias bc='bc -ql'
 214 alias watch='watch -n1'
 215 alias sudo='sudo ' # ability to use aliases with sudo
 216 aliasf sudosu 'sudo su -l -s /bin/bash'
 217 aliasf python 'PYTHONSTARTUP=~/.pythonrc.py python3'
 218 aliasf webshare 'python3 -mhttp.server'
 219
 220 if ! command -v pbcopy &> /dev/null; then
 221     alias pbcopy='xsel --clipboard --input'
 222     alias pbcopym='xsel --input'
 223     alias pbpaste='xsel --clipboard --output'
 224     alias pbpastem='xsel --output'
 225 fi
 226
 227 # man with coloured headings and a terminal title
 228 function man {
 229     env \
 230         LESS_TERMCAP_md=$'\E[01;38;5;74m' \
 231         LESS_TERMCAP_me=$'\E[0m' \
 232         LESS_TERMCAP_us=$'\E[04;38;5;146m' \
 233         LESS_TERMCAP_ue=$'\E[0m' \
 234         LC_CTYPE=C \
 235     man "$@"
 236 }
 237
 238 # Creates the directory if it doesn't exist, and changes into it
 239 function mcd {
 240     # shellcheck disable=SC2164
 241     mkdir -p "$1" && cd "$1"
 242 }
 243
 244 # Sets the nice and ionice priorities for the current shell to the lowest values
 245 function slowshell {
 246     ionice -c 3 -p $$
 247     renice -n 19 -p $$
 248 }
 249
 250 # SSH to an unknown host and print the new known_hosts entry
 251 function ssh_new {
 252     local new_known_hosts_file
 253     new_known_hosts_file="$(mktemp)"
 254     ssh -o UserKnownHostsFile="$new_known_hosts_file" "$@" echo 'Connection ok'
 255     cat "$new_known_hosts_file"
 256     rm -f "$new_known_hosts_file"
 257 }
 258
 259 # SSH without verifying host key
 260 function ssh_unsafe {
 261     ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null "$@"
 262 }
 263
 264
 265 ##################
 266 # Editor aliases #
 267 ##################
 268
 269 if emacsclient --version &> /dev/null; then
 270     export ALTERNATE_EDITOR='vim'
 271     export EDITOR='emacsclient --tty'
 272
 273     if [[ "$TERM" == screen* ]]; then
 274         aliasf edit 'emacsclient --tty'
 275     else
 276         aliasf edit 'emacsclient --create-frame --no-wait'
 277     fi
 278 else
 279     export EDITOR='vim'
 280     aliasf edit 'vim'
 281 fi
 282
 283
 284 #########################
 285 # Optional local config #
 286 #########################
 287
 288 [ -r ~/.bashrc_local ] && source ~/.bashrc_local
 289
 290
 291 ##################
 292 # xterm titlebar #
 293 ##################
 294
 295 # When at a prompt display `workingdir (hostname)`
 296 function print_title_prompt {
 297     printf '\e]0;bash:%s (%s)\a' \
 298         "${PWD/$HOME/\~}" \
 299         "$(hostname -s)"
 300
 301     if [[ "$TERM" == screen* ]]; then
 302         printf '\ekbash\e\\'
 303     fi
 304 }
 305 PROMPT_COMMAND=print_title_prompt
 306
 307 # Display the command about to be executed. This must go at the end of the
 308 # bashrc to avoid running the trap on commands in the bashrc
 309 function print_title_exec {
 310     [ "$BASH_COMMAND" = "$PROMPT_COMMAND" ] && return
 311
 312     printf '\e]0;%s (%s)\a' \
 313         "$(tr -cd '[:graph:] ' <<< "$BASH_COMMAND")" \
 314         "$(hostname -s)"
 315
 316     if [[ "$TERM" == screen* ]]; then
 317         printf '\ek%s\e\\' \
 318             "$(sed -n -e 's/sudo //' -e 's/ .*//' -e 1p <<< "$BASH_COMMAND")"
 319     fi
 320 }
 321 trap print_title_exec DEBUG
 322
 323
 324 ###########
 325 # The end #
 326 ###########