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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 272ebe03 2022-09-16 op if test -f /usr/sbin/vmd && 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 272ebe03 2022-09-16 op command -v ifconfig >/dev/null && \
53 272ebe03 2022-09-16 op set -A complete_ifconfig_1 -- $(ifconfig | grep ^[a-z] | cut -d: -f1)
54 7b4d8efb 2022-02-04 op
55 7b4d8efb 2022-02-04 op and for got(1)
56 7b4d8efb 2022-02-04 op
57 b142858f 2022-07-29 op command -v got >/dev/null && \
58 b142858f 2022-07-29 op set -A complete_got_1 -- $(got -h 2>&1 | sed -n s/commands://p)
59 7b4d8efb 2022-02-04 op
60 7b4d8efb 2022-02-04 op Tweak the output of ls
61 7b4d8efb 2022-02-04 op
62 7b4d8efb 2022-02-04 op alias ls='ls -F'
63 29db7106 2022-09-15 op
64 29db7106 2022-09-15 op Provide an easiest access to amused
65 29db7106 2022-09-15 op
66 29db7106 2022-09-15 op alias a=amused
67 7b4d8efb 2022-02-04 op
68 7b4d8efb 2022-02-04 op reset(1) doesn't work as expected inside tmux: the old output can still
69 7b4d8efb 2022-02-04 op be consulted when scrolling. If I, lazy as I am, bother to type "reset"
70 7b4d8efb 2022-02-04 op I want to be sure that the history was cleared!
71 7b4d8efb 2022-02-04 op
72 7b4d8efb 2022-02-04 op if [ -n "$TMUX" ]; then
73 7b4d8efb 2022-02-04 op alias reset='reset && tmux clear-history'
74 7b4d8efb 2022-02-04 op fi
75 7b4d8efb 2022-02-04 op
76 7b4d8efb 2022-02-04 op CDPATH is super useful! I even wrote a post about it:
77 7b4d8efb 2022-02-04 op https://www.omarpolo.com/post/enjoying-cdpath.html
78 7b4d8efb 2022-02-04 op
79 7b4d8efb 2022-02-04 op export CDPATH=".:$HOME/w:/usr/ports:/usr/ports/mystuff:$HOME/quicklisp/local-projects"
80 7b4d8efb 2022-02-04 op
81 7b4d8efb 2022-02-04 op I love to hate gpg! It needs some special treatments to work and this
82 7b4d8efb 2022-02-04 op should also (finger crossed!) fix pinentry over ssh. I'm not sure it
83 7b4d8efb 2022-02-04 op works though, it's been a while since I've connected remotely to my
84 7b4d8efb 2022-02-04 op desktop.
85 7b4d8efb 2022-02-04 op
86 7b4d8efb 2022-02-04 op export GPG_TTY=$(tty)
87 7b4d8efb 2022-02-04 op if [ -n "$SSH_CONNECTION" ]; then
88 7b4d8efb 2022-02-04 op export PINENTRY_USER_DATA="USE_CURSES=1"
89 7b4d8efb 2022-02-04 op fi
90 7b4d8efb 2022-02-04 op
91 7b4d8efb 2022-02-04 op The BSDs have this incredibly useful signal available, it's a shame not
92 7b4d8efb 2022-02-04 op to use it!
93 7b4d8efb 2022-02-04 op
94 272ebe03 2022-09-16 op case "$(uname)" in
95 272ebe03 2022-09-16 op *BSD) stty status ^T ;;
96 272ebe03 2022-09-16 op esac
97 7b4d8efb 2022-02-04 op
98 7b4d8efb 2022-02-04 op I really like my prompt to be as minimal as possible. For some time
99 7b4d8efb 2022-02-04 op I've used a single colon `;' as prompt, it's really nice! At the moment
100 272ebe03 2022-09-16 op thought I'm usign a more plan9-esque percent sign, with an optional
101 272ebe03 2022-09-16 op hostname:
102 7b4d8efb 2022-02-04 op
103 272ebe03 2022-09-16 op if [ "$(hostname)" = venera ]; then
104 272ebe03 2022-09-16 op PS1='% '
105 272ebe03 2022-09-16 op else
106 272ebe03 2022-09-16 op PS1='\h% '
107 272ebe03 2022-09-16 op fi
108 7b4d8efb 2022-02-04 op
109 7b4d8efb 2022-02-04 op I got tired of trying to remember the set of flags for nc to walk to
110 7b4d8efb 2022-02-04 op Gemini servers, so here we are:
111 7b4d8efb 2022-02-04 op
112 7b4d8efb 2022-02-04 op # "post" stdin to the gemini server
113 7b4d8efb 2022-02-04 op # usage: gem host [port]
114 7b4d8efb 2022-02-04 op gem()
115 7b4d8efb 2022-02-04 op {
116 7b4d8efb 2022-02-04 op host="${1:?missing host}"
117 7b4d8efb 2022-02-04 op port="${2:-1965}"
118 7b4d8efb 2022-02-04 op nc -c -Tnoverify "${host}" "${port}"
119 7b4d8efb 2022-02-04 op }
120 7b4d8efb 2022-02-04 op
121 7b4d8efb 2022-02-04 op I think I've stolen these from someone. It makes a copy of the file and
122 7b4d8efb 2022-02-04 op launch an editor on the original file, incledibly useful when working
123 7b4d8efb 2022-02-04 op with ports (that's why doas!)
124 7b4d8efb 2022-02-04 op
125 7b4d8efb 2022-02-04 op mgdiff()
126 7b4d8efb 2022-02-04 op {
127 7b4d8efb 2022-02-04 op if [ -z "$1" ]; then
128 7b4d8efb 2022-02-04 op printf "%s\n" "USAGE: mgdiff file" >&2
129 7b4d8efb 2022-02-04 op return
130 7b4d8efb 2022-02-04 op fi
131 029abbe3 2023-03-06 op doas cp -p "$1" "$1.orig.port"
132 7b4d8efb 2022-02-04 op doas mg "$1"
133 7b4d8efb 2022-02-04 op }
134 7b4d8efb 2022-02-04 op
135 7b4d8efb 2022-02-04 op hist is a quick wrapper around history and grep to quickly search for a
136 7b4d8efb 2022-02-04 op previous command:
137 7b4d8efb 2022-02-04 op
138 7b4d8efb 2022-02-04 op hist()
139 7b4d8efb 2022-02-04 op {
140 7b4d8efb 2022-02-04 op if [ -z "$1" ]; then
141 7b4d8efb 2022-02-04 op printf "%s\n" "USAGE: hist pattern" >&2
142 7b4d8efb 2022-02-04 op return 1
143 7b4d8efb 2022-02-04 op fi
144 7b4d8efb 2022-02-04 op history 0 | grep "$1"
145 7b4d8efb 2022-02-04 op }
146 7b4d8efb 2022-02-04 op
147 04b39415 2022-02-04 op clbin (the site) is a web pastebin that's easy to use from the command
148 04b39415 2022-02-04 op line with curl. clbin (the function) is an easy way to share something,
149 04b39415 2022-02-04 op just pipe it to clbin and it returns an url.
150 04b39415 2022-02-04 op
151 04b39415 2022-02-04 op clbin()
152 04b39415 2022-02-04 op {
153 04b39415 2022-02-04 op curl -F 'clbin=<-' https://clbin.com
154 04b39415 2022-02-04 op }
155 04b39415 2022-02-04 op
156 7b4d8efb 2022-02-04 op Some aliases I use when working with the OpenBSD port tree:
157 7b4d8efb 2022-02-04 op
158 7b4d8efb 2022-02-04 op alias m="make"
159 7b4d8efb 2022-02-04 op alias mup="make update-patches"
160 7b4d8efb 2022-02-04 op alias mupl="make update-plist"
161 0d484cb2 2022-02-17 op alias mpldc="make port-lib-depends-check"
162 76902419 2022-03-30 op alias pbuild="env MAKE_JOBS=5 time make"
163 76902419 2022-03-30 op alias build="pbuild 2>&1 | tee build"
164 8a8ff32c 2022-02-05 op alias pclean='make clean="package plist"'
165 7b4d8efb 2022-02-04 op
166 afa6a1ba 2022-05-23 op This one is pretty sophisticated, I've stolen it from jca@
167 afa6a1ba 2022-05-23 op
168 afa6a1ba 2022-05-23 op # check shared libs version
169 afa6a1ba 2022-05-23 op cshlib() {
170 afa6a1ba 2022-05-23 op local cnt=0
171 afa6a1ba 2022-05-23 op local f
172 afa6a1ba 2022-05-23 op
173 afa6a1ba 2022-05-23 op for f in $(make show=SHARED_LIBS); do
174 afa6a1ba 2022-05-23 op [ "$((cnt++ % 2))" -eq 1 ] && continue
175 afa6a1ba 2022-05-23 op echo '===>' $f
176 afa6a1ba 2022-05-23 op /usr/src/lib/check_sym /usr/local/lib/lib$f.so* \
177 afa6a1ba 2022-05-23 op $(make show=WRKINST)/usr/local/lib/lib$f.so*
178 afa6a1ba 2022-05-23 op done
179 afa6a1ba 2022-05-23 op }
180 afa6a1ba 2022-05-23 op
181 b73f39e1 2022-03-02 op And even more aliases:
182 b73f39e1 2022-03-02 op
183 3e38cd13 2022-11-25 op alias mopnew="mdirs ~/Maildir/op | grep -v rss | mlist -st | mthread -r | mseq -S; mscan"
184 b73f39e1 2022-03-02 op
185 b73f39e1 2022-03-02 op for c in com rep fwd bnc; do
186 e7f82226 2022-08-05 op local _mvisual='mg -f auto-fill-mode'
187 e7f82226 2022-08-05 op if [ -n "$DISPLAY" ]; then
188 e7f82226 2022-08-05 op _mvisual='emacsclient -c'
189 e7f82226 2022-08-05 op fi
190 e7f82226 2022-08-05 op
191 e7f82226 2022-08-05 op alias m$c="VISUAL='$_mvisual' m$c"
192 b73f39e1 2022-03-02 op alias o$c="m$c -from 'Omar Polo <op@openbsd.org>'"
193 b73f39e1 2022-03-02 op done
194 76902419 2022-03-30 op
195 76902419 2022-03-30 op And finally some aliases for mq
196 76902419 2022-03-30 op
197 76902419 2022-03-30 op alias pnq="NQDIR=/tmp/ports/ nq "
198 76902419 2022-03-30 op alias pfq="NQDIR=/tmp/ports/ fq "
199 76902419 2022-03-30 op
200 76902419 2022-03-30 op Stuff to use my own purritobin instance
201 76902419 2022-03-30 op
202 76902419 2022-03-30 op : ${P_SERVER=paste.omarpolo.com}
203 76902419 2022-03-30 op : ${P_PORT=42069}
204 76902419 2022-03-30 op : ${P_TIME=week}
205 76902419 2022-03-30 op : ${P_MAXTIME=30}
206 76902419 2022-03-30 op
207 76902419 2022-03-30 op shell client to upload a plaintext message
208 76902419 2022-03-30 op
209 76902419 2022-03-30 op purr() {
210 76902419 2022-03-30 op curl --silent --max-time "${P_MAXTIME}" \
211 76902419 2022-03-30 op --data-binary "@${1:-/dev/stdin}" \
212 76902419 2022-03-30 op "${P_SERVER}:${P_PORT}/${P_TIME}"
213 76902419 2022-03-30 op }
214 76902419 2022-03-30 op
215 76902419 2022-03-30 op shell client to upload an encrypted message
216 b73f39e1 2022-03-02 op
217 76902419 2022-03-30 op meow() {
218 76902419 2022-03-30 op key="$(openssl rand -hex 32)"
219 76902419 2022-03-30 op iv="$(openssl rand -hex 16)"
220 76902419 2022-03-30 op url="$(openssl enc -aes-256-cbc -K ${key} -iv ${iv} -e -base64 -A < ${1:-/dev/stdin} | purr)"
221 76902419 2022-03-30 op printf "%s\n" "${url%\/*}/paste.html#${url##*\/}_${key}_${iv}"
222 76902419 2022-03-30 op unset key iv url
223 76902419 2022-03-30 op }
224 76902419 2022-03-30 op
225 76902419 2022-03-30 op ...and to decrypt it
226 76902419 2022-03-30 op
227 76902419 2022-03-30 op meowd() {
228 76902419 2022-03-30 op url="$1"
229 76902419 2022-03-30 op baseurl="${url%\/*}"
230 76902419 2022-03-30 op vals="${url##*\#}"
231 76902419 2022-03-30 op paste=$(printf '%s\n' "${vals}" | cut -d_ -f1)
232 76902419 2022-03-30 op key=$(printf '%s\n' "${vals}" | cut -d _ -f2)
233 76902419 2022-03-30 op iv=$(printf '%s\n' "${vals}" | cut -d _ -f3)
234 76902419 2022-03-30 op curl --max-time "${P_MAXTIME}" --write-out "\n" --silent \
235 76902419 2022-03-30 op "${baseurl}/${paste}" | openssl enc -aes-256-cbc \
236 76902419 2022-03-30 op -base64 -d -K ${key} -iv ${iv}
237 76902419 2022-03-30 op unset url baseurl vals paste key iv
238 7b7cd64a 2022-10-14 op }
239 7b7cd64a 2022-10-14 op
240 a6cd6375 2022-11-23 op llama is also nice. It's possible to use it to cd too!
241 7b7cd64a 2022-10-14 op
242 a6cd6375 2022-11-23 op ll() {
243 a6cd6375 2022-11-23 op cd "$(llama "$@")"
244 76902419 2022-03-30 op }
245 76902419 2022-03-30 op
246 7b7cd64a 2022-10-14 op For extra-comfyness bind it to C-o
247 7b7cd64a 2022-10-14 op
248 a6cd6375 2022-11-23 op bind -m '^O=^U ll^M^Y'
249 7b7cd64a 2022-10-14 op
250 7b4d8efb 2022-02-04 op find(1) is an invaluable tool and I use it all the time. walk is an
251 7b4d8efb 2022-02-04 op attempt to build a wrapper around some common usages of find that is a
252 7b4d8efb 2022-02-04 op little bit less verbose to use. The name is stolen from 9front, but the
253 7b4d8efb 2022-02-04 op implementation is completely different.
254 7b4d8efb 2022-02-04 op
255 7b4d8efb 2022-02-04 op # usage: walk [dir] [type] [name regexp] [! command to execute]
256 7b4d8efb 2022-02-04 op walk()
257 7b4d8efb 2022-02-04 op {
258 7b4d8efb 2022-02-04 op if [ $# -eq 0 ]; then
259 7b4d8efb 2022-02-04 op find .
260 7b4d8efb 2022-02-04 op return
261 7b4d8efb 2022-02-04 op fi
262 7b4d8efb 2022-02-04 op
263 7b4d8efb 2022-02-04 op local dir=.
264 7b4d8efb 2022-02-04 op local type=
265 7b4d8efb 2022-02-04 op local name=\*
266 7b4d8efb 2022-02-04 op
267 7b4d8efb 2022-02-04 op if [ -n "$1" -a -d "$1" ]; then
268 7b4d8efb 2022-02-04 op dir="$1"
269 7b4d8efb 2022-02-04 op shift
270 7b4d8efb 2022-02-04 op fi
271 7b4d8efb 2022-02-04 op
272 7b4d8efb 2022-02-04 op case "$1" in
273 7b4d8efb 2022-02-04 op b|c|d|f|l|p|s)
274 7b4d8efb 2022-02-04 op type="-type $1"
275 7b4d8efb 2022-02-04 op shift
276 7b4d8efb 2022-02-04 op esac
277 7b4d8efb 2022-02-04 op
278 7b4d8efb 2022-02-04 op if [ -n "$1" -a "x$1" != "x!" ]; then
279 7b4d8efb 2022-02-04 op name="$1"
280 7b4d8efb 2022-02-04 op shift
281 7b4d8efb 2022-02-04 op fi
282 7b4d8efb 2022-02-04 op
283 7b4d8efb 2022-02-04 op if [ "x$1" = x! ]; then
284 7b4d8efb 2022-02-04 op shift
285 7b4d8efb 2022-02-04 op fi
286 7b4d8efb 2022-02-04 op
287 7b4d8efb 2022-02-04 op if [ $# -eq 0 ]; then
288 7b4d8efb 2022-02-04 op find "$dir" $type -iname "$name"
289 7b4d8efb 2022-02-04 op else
290 7b4d8efb 2022-02-04 op find "$dir" $type -iname "$name" -exec "$@" {} +
291 7b4d8efb 2022-02-04 op fi
292 7b4d8efb 2022-02-04 op }