1 7b4d8efb 2022-02-04 op # ksh
  2 7b4d8efb 2022-02-04 op 
  3 7b4d8efb 2022-02-04 op OpenBSD ksh (sometimes called opdksh or oksh) is the default shell on
  4 7b4d8efb 2022-02-04 op OpenBSD, and is generally my go-to choince on other systems too.  It has
  5 7b4d8efb 2022-02-04 op a good ratio of features and simplicity
  6 7b4d8efb 2022-02-04 op 
  7 7b4d8efb 2022-02-04 op 	if [ "$TERM" = dumb ]; then
  8 7b4d8efb 2022-02-04 op 		PS1='$ '
  9 7b4d8efb 2022-02-04 op 		return
 10 7b4d8efb 2022-02-04 op 	fi
 11 7b4d8efb 2022-02-04 op 
 12 7b4d8efb 2022-02-04 op Enable emacs-like command editing regardless of $EDITOR and csh-like
 13 7b4d8efb 2022-02-04 op history expansion with !
 14 7b4d8efb 2022-02-04 op 
 15 7b4d8efb 2022-02-04 op 	set -o emacs
 16 7b4d8efb 2022-02-04 op 	set -o csh-history
 17 7b4d8efb 2022-02-04 op 
 18 7b4d8efb 2022-02-04 op Talking about history, by default ksh won't store any, which is
 19 7b4d8efb 2022-02-04 op unfortunate.  I can't live without my C-r working!
 20 7b4d8efb 2022-02-04 op 
 21 7b4d8efb 2022-02-04 op 	HISTCONTROL=ignoredups:ignorespace
 22 7b4d8efb 2022-02-04 op 	HISTFILE=$HOME/.history
 23 7b4d8efb 2022-02-04 op 	HISTSIZE=10000
 24 7b4d8efb 2022-02-04 op 
 25 7b4d8efb 2022-02-04 op OpenBSD ksh has a limited support for programmed completions through
 26 7b4d8efb 2022-02-04 op static lists.  The completions are provided via an array called
 27 7b4d8efb 2022-02-04 op complete_$progname; or complete_$progname_$nth for the nth argument.
 28 7b4d8efb 2022-02-04 op 
 29 7b4d8efb 2022-02-04 op Here's the completions for ssh and scp:
 30 7b4d8efb 2022-02-04 op 
 31 7b4d8efb 2022-02-04 op 	HOST_LIST=$(awk '/Host / {print $2}' ~/.ssh/config | xargs echo)
 32 7b4d8efb 2022-02-04 op 
 33 7b4d8efb 2022-02-04 op 	set -A complete_ssh -- $HOST_LIST
 34 7b4d8efb 2022-02-04 op 	set -A complete_scp -- $HOST_LIST
 35 7b4d8efb 2022-02-04 op 
 36 7b4d8efb 2022-02-04 op and for kill(1) and pkill(1)
 37 7b4d8efb 2022-02-04 op 
 38 7b4d8efb 2022-02-04 op 	set -A complete_kill_1 -- -9 -HUP -INFO -KILL -TERM
 39 7b4d8efb 2022-02-04 op 	set -A complete_pkill_2 -- -SIGHUP -SIGUSR1 -SIGUSR2 -SIGTERM -SIGKILL
 40 7b4d8efb 2022-02-04 op 
 41 7b4d8efb 2022-02-04 op and for vmd(8) if available
 42 7b4d8efb 2022-02-04 op 
 43 7b4d8efb 2022-02-04 op 	if pgrep -fq /usr/sbin/vmd; then
 44 7b4d8efb 2022-02-04 op 		set -A complete_vmctl_1 -- console load reload start stop \
 45 7b4d8efb 2022-02-04 op 			reset status send receive
 46 7b4d8efb 2022-02-04 op 		set -A complete_vmctl -- \
 47 7b4d8efb 2022-02-04 op 			$(vmctl status | awk '!/NAME/{printf "%s ", $NF}')
 48 7b4d8efb 2022-02-04 op 	fi
 49 7b4d8efb 2022-02-04 op 
 50 7b4d8efb 2022-02-04 op and for ifconfig(8)
 51 7b4d8efb 2022-02-04 op 
 52 7b4d8efb 2022-02-04 op 	set -A complete_ifconfig_1 -- $(ifconfig | grep ^[a-z] | cut -d: -f1)
 53 7b4d8efb 2022-02-04 op 
 54 7b4d8efb 2022-02-04 op and for got(1)
 55 7b4d8efb 2022-02-04 op 
 56 7b4d8efb 2022-02-04 op 	set -A complete_got_1 --	\
 57 7b4d8efb 2022-02-04 op 		init			\
 58 7b4d8efb 2022-02-04 op 		import im		\
 59 7b4d8efb 2022-02-04 op 		clone cl		\
 60 7b4d8efb 2022-02-04 op 		fetch fe		\
 61 7b4d8efb 2022-02-04 op 		checkout co		\
 62 7b4d8efb 2022-02-04 op 		update up		\
 63 7b4d8efb 2022-02-04 op 		status st		\
 64 7b4d8efb 2022-02-04 op 		log			\
 65 7b4d8efb 2022-02-04 op 		diff di			\
 66 7b4d8efb 2022-02-04 op 		blame bl		\
 67 7b4d8efb 2022-02-04 op 		tree tr			\
 68 7b4d8efb 2022-02-04 op 		ref			\
 69 7b4d8efb 2022-02-04 op 		branch br		\
 70 7b4d8efb 2022-02-04 op 		tag			\
 71 7b4d8efb 2022-02-04 op 		add			\
 72 7b4d8efb 2022-02-04 op 		remove rm		\
 73 7b4d8efb 2022-02-04 op 		revert rv		\
 74 7b4d8efb 2022-02-04 op 		commit ci		\
 75 7b4d8efb 2022-02-04 op 		send se			\
 76 7b4d8efb 2022-02-04 op 		cherrypick cy		\
 77 7b4d8efb 2022-02-04 op 		backout bo		\
 78 7b4d8efb 2022-02-04 op 		rebase rb		\
 79 7b4d8efb 2022-02-04 op 		histedit he		\
 80 7b4d8efb 2022-02-04 op 		integrate ig		\
 81 7b4d8efb 2022-02-04 op 		merge mg		\
 82 7b4d8efb 2022-02-04 op 		stage sg		\
 83 7b4d8efb 2022-02-04 op 		unstage ug		\
 84 7b4d8efb 2022-02-04 op 		cat			\
 85 7b4d8efb 2022-02-04 op 		info
 86 7b4d8efb 2022-02-04 op 
 87 7b4d8efb 2022-02-04 op Tweak the output of ls
 88 7b4d8efb 2022-02-04 op 
 89 7b4d8efb 2022-02-04 op 	alias ls='ls -F'
 90 7b4d8efb 2022-02-04 op 
 91 7b4d8efb 2022-02-04 op reset(1) doesn't work as expected inside tmux: the old output can still
 92 7b4d8efb 2022-02-04 op be consulted when scrolling.  If I, lazy as I am, bother to type "reset"
 93 7b4d8efb 2022-02-04 op I want to be sure that the history was cleared!
 94 7b4d8efb 2022-02-04 op 
 95 7b4d8efb 2022-02-04 op 	if [ -n "$TMUX" ]; then
 96 7b4d8efb 2022-02-04 op 		alias reset='reset && tmux clear-history'
 97 7b4d8efb 2022-02-04 op 	fi
 98 7b4d8efb 2022-02-04 op 
 99 7b4d8efb 2022-02-04 op CDPATH is super useful!  I even wrote a post about it:
100 7b4d8efb 2022-02-04 op https://www.omarpolo.com/post/enjoying-cdpath.html
101 7b4d8efb 2022-02-04 op 
102 7b4d8efb 2022-02-04 op 	export CDPATH=".:$HOME/w:/usr/ports:/usr/ports/mystuff:$HOME/quicklisp/local-projects"
103 7b4d8efb 2022-02-04 op 
104 7b4d8efb 2022-02-04 op I love to hate gpg!  It needs some special treatments to work and this
105 7b4d8efb 2022-02-04 op should also (finger crossed!) fix pinentry over ssh.  I'm not sure it
106 7b4d8efb 2022-02-04 op works though, it's been a while since I've connected remotely to my
107 7b4d8efb 2022-02-04 op desktop.
108 7b4d8efb 2022-02-04 op 
109 7b4d8efb 2022-02-04 op 	export GPG_TTY=$(tty)
110 7b4d8efb 2022-02-04 op 	if [ -n "$SSH_CONNECTION" ]; then
111 7b4d8efb 2022-02-04 op 		export PINENTRY_USER_DATA="USE_CURSES=1"
112 7b4d8efb 2022-02-04 op 	fi
113 7b4d8efb 2022-02-04 op 
114 7b4d8efb 2022-02-04 op The BSDs have this incredibly useful signal available, it's a shame not
115 7b4d8efb 2022-02-04 op to use it!
116 7b4d8efb 2022-02-04 op 
117 7b4d8efb 2022-02-04 op 	stty status ^T
118 7b4d8efb 2022-02-04 op 
119 7b4d8efb 2022-02-04 op I really like my prompt to be as minimal as possible.  For some time
120 7b4d8efb 2022-02-04 op I've used a single colon `;' as prompt, it's really nice!  At the moment
121 7b4d8efb 2022-02-04 op thought I'm usign a more plan9-esque percent sign:
122 7b4d8efb 2022-02-04 op 
123 7b4d8efb 2022-02-04 op 	PS1='% '
124 7b4d8efb 2022-02-04 op 
125 7b4d8efb 2022-02-04 op I got tired of trying to remember the set of flags for nc to walk to
126 7b4d8efb 2022-02-04 op Gemini servers, so here we are:
127 7b4d8efb 2022-02-04 op 
128 7b4d8efb 2022-02-04 op 	# "post" stdin to the gemini server
129 7b4d8efb 2022-02-04 op 	# usage: gem host [port]
130 7b4d8efb 2022-02-04 op 	gem()
131 7b4d8efb 2022-02-04 op 	{
132 7b4d8efb 2022-02-04 op 		host="${1:?missing host}"
133 7b4d8efb 2022-02-04 op 		port="${2:-1965}"
134 7b4d8efb 2022-02-04 op 		nc -c -Tnoverify "${host}" "${port}"
135 7b4d8efb 2022-02-04 op 	}
136 7b4d8efb 2022-02-04 op 
137 7b4d8efb 2022-02-04 op I think I've stolen these from someone.  It makes a copy of the file and
138 7b4d8efb 2022-02-04 op launch an editor on the original file, incledibly useful when working
139 7b4d8efb 2022-02-04 op with ports (that's why doas!)
140 7b4d8efb 2022-02-04 op 
141 7b4d8efb 2022-02-04 op 	mgdiff()
142 7b4d8efb 2022-02-04 op 	{
143 7b4d8efb 2022-02-04 op 		if [ -z "$1" ]; then
144 7b4d8efb 2022-02-04 op 			printf "%s\n" "USAGE: mgdiff file" >&2
145 7b4d8efb 2022-02-04 op 			return
146 7b4d8efb 2022-02-04 op 		fi
147 7b4d8efb 2022-02-04 op 		doas cp -p "$1" "$1.orig"
148 7b4d8efb 2022-02-04 op 		doas mg "$1"
149 7b4d8efb 2022-02-04 op 	}
150 7b4d8efb 2022-02-04 op 
151 7b4d8efb 2022-02-04 op hist is a quick wrapper around history and grep to quickly search for a
152 7b4d8efb 2022-02-04 op previous command:
153 7b4d8efb 2022-02-04 op 
154 7b4d8efb 2022-02-04 op 	hist()
155 7b4d8efb 2022-02-04 op 	{
156 7b4d8efb 2022-02-04 op 		if [ -z "$1" ]; then
157 7b4d8efb 2022-02-04 op 			printf "%s\n" "USAGE: hist pattern" >&2
158 7b4d8efb 2022-02-04 op 			return 1
159 7b4d8efb 2022-02-04 op 		fi
160 7b4d8efb 2022-02-04 op 		history 0 | grep "$1"
161 7b4d8efb 2022-02-04 op 	}
162 7b4d8efb 2022-02-04 op 
163 7b4d8efb 2022-02-04 op Some aliases I use when working with the OpenBSD port tree:
164 7b4d8efb 2022-02-04 op 
165 7b4d8efb 2022-02-04 op 	alias m="make"
166 7b4d8efb 2022-02-04 op 	alias mup="make update-patches"
167 7b4d8efb 2022-02-04 op 	alias mupl="make update-plist"
168 7b4d8efb 2022-02-04 op 	alias build="MAKE_JOBS=5 time make 2>&1 | tee build"
169 7b4d8efb 2022-02-04 op 	alias pclear='make clean="package plist"'
170 7b4d8efb 2022-02-04 op 
171 7b4d8efb 2022-02-04 op find(1) is an invaluable tool and I use it all the time.  walk is an
172 7b4d8efb 2022-02-04 op attempt to build a wrapper around some common usages of find that is a
173 7b4d8efb 2022-02-04 op little bit less verbose to use.  The name is stolen from 9front, but the
174 7b4d8efb 2022-02-04 op implementation is completely different.
175 7b4d8efb 2022-02-04 op 
176 7b4d8efb 2022-02-04 op 	# usage: walk [dir] [type] [name regexp] [! command to execute]
177 7b4d8efb 2022-02-04 op 	walk()
178 7b4d8efb 2022-02-04 op 	{
179 7b4d8efb 2022-02-04 op 		if [ $# -eq 0 ]; then
180 7b4d8efb 2022-02-04 op 			find .
181 7b4d8efb 2022-02-04 op 			return
182 7b4d8efb 2022-02-04 op 		fi
183 7b4d8efb 2022-02-04 op 
184 7b4d8efb 2022-02-04 op 		local dir=.
185 7b4d8efb 2022-02-04 op 		local type=
186 7b4d8efb 2022-02-04 op 		local name=\*
187 7b4d8efb 2022-02-04 op 
188 7b4d8efb 2022-02-04 op 		if [ -n "$1" -a -d "$1" ]; then
189 7b4d8efb 2022-02-04 op 			dir="$1"
190 7b4d8efb 2022-02-04 op 			shift
191 7b4d8efb 2022-02-04 op 		fi
192 7b4d8efb 2022-02-04 op 
193 7b4d8efb 2022-02-04 op 		case "$1" in
194 7b4d8efb 2022-02-04 op 		b|c|d|f|l|p|s)
195 7b4d8efb 2022-02-04 op 			type="-type $1"
196 7b4d8efb 2022-02-04 op 			shift
197 7b4d8efb 2022-02-04 op 		esac
198 7b4d8efb 2022-02-04 op 
199 7b4d8efb 2022-02-04 op 		if [ -n "$1" -a "x$1" != "x!" ]; then
200 7b4d8efb 2022-02-04 op 			name="$1"
201 7b4d8efb 2022-02-04 op 			shift
202 7b4d8efb 2022-02-04 op 		fi
203 7b4d8efb 2022-02-04 op 
204 7b4d8efb 2022-02-04 op 		if [ "x$1" = x! ]; then
205 7b4d8efb 2022-02-04 op 			shift
206 7b4d8efb 2022-02-04 op 		fi
207 7b4d8efb 2022-02-04 op 
208 7b4d8efb 2022-02-04 op 		if [ $# -eq 0 ]; then
209 7b4d8efb 2022-02-04 op 			find "$dir" $type -iname "$name"
210 7b4d8efb 2022-02-04 op 		else
211 7b4d8efb 2022-02-04 op 			find "$dir" $type -iname "$name" -exec "$@" {} +
212 7b4d8efb 2022-02-04 op 		fi
213 7b4d8efb 2022-02-04 op 	}