3 OpenBSD ksh (sometimes called opdksh or oksh) is the default shell on
4 OpenBSD, and is generally my go-to choince on other systems too. It has
5 a good ratio of features and simplicity
7 if [ "$TERM" = dumb ]; then
12 Enable emacs-like command editing regardless of $EDITOR and csh-like
13 history expansion with !
18 Talking about history, by default ksh won't store any, which is
19 unfortunate. I can't live without my C-r working!
21 HISTCONTROL=ignoredups:ignorespace
22 HISTFILE=$HOME/.history
25 OpenBSD ksh has a limited support for programmed completions through
26 static lists. The completions are provided via an array called
27 complete_$progname; or complete_$progname_$nth for the nth argument.
29 Here's the completions for ssh and scp:
31 HOST_LIST=$(awk '/Host / {print $2}' ~/.ssh/config | xargs echo)
33 set -A complete_ssh -- $HOST_LIST
34 set -A complete_scp -- $HOST_LIST
36 and for kill(1) and pkill(1)
38 set -A complete_kill_1 -- -9 -HUP -INFO -KILL -TERM
39 set -A complete_pkill_2 -- -SIGHUP -SIGUSR1 -SIGUSR2 -SIGTERM -SIGKILL
41 and for vmd(8) if available
43 if pgrep -fq /usr/sbin/vmd; then
44 set -A complete_vmctl_1 -- console load reload start stop \
45 reset status send receive
46 set -A complete_vmctl -- \
47 $(vmctl status | awk '!/NAME/{printf "%s ", $NF}')
52 set -A complete_ifconfig_1 -- $(ifconfig | grep ^[a-z] | cut -d: -f1)
56 set -A complete_got_1 -- \
88 Tweak the output of ls
92 reset(1) doesn't work as expected inside tmux: the old output can still
93 be consulted when scrolling. If I, lazy as I am, bother to type "reset"
94 I want to be sure that the history was cleared!
96 if [ -n "$TMUX" ]; then
97 alias reset='reset && tmux clear-history'
100 CDPATH is super useful! I even wrote a post about it:
101 https://www.omarpolo.com/post/enjoying-cdpath.html
103 export CDPATH=".:$HOME/w:/usr/ports:/usr/ports/mystuff:$HOME/quicklisp/local-projects"
105 I love to hate gpg! It needs some special treatments to work and this
106 should also (finger crossed!) fix pinentry over ssh. I'm not sure it
107 works though, it's been a while since I've connected remotely to my
110 export GPG_TTY=$(tty)
111 if [ -n "$SSH_CONNECTION" ]; then
112 export PINENTRY_USER_DATA="USE_CURSES=1"
115 The BSDs have this incredibly useful signal available, it's a shame not
120 I really like my prompt to be as minimal as possible. For some time
121 I've used a single colon `;' as prompt, it's really nice! At the moment
122 thought I'm usign a more plan9-esque percent sign:
126 I got tired of trying to remember the set of flags for nc to walk to
127 Gemini servers, so here we are:
129 # "post" stdin to the gemini server
130 # usage: gem host [port]
133 host="${1:?missing host}"
135 nc -c -Tnoverify "${host}" "${port}"
138 I think I've stolen these from someone. It makes a copy of the file and
139 launch an editor on the original file, incledibly useful when working
140 with ports (that's why doas!)
145 printf "%s\n" "USAGE: mgdiff file" >&2
148 doas cp -p "$1" "$1.orig"
152 hist is a quick wrapper around history and grep to quickly search for a
158 printf "%s\n" "USAGE: hist pattern" >&2
161 history 0 | grep "$1"
164 clbin (the site) is a web pastebin that's easy to use from the command
165 line with curl. clbin (the function) is an easy way to share something,
166 just pipe it to clbin and it returns an url.
170 curl -F 'clbin=<-' https://clbin.com
173 Some aliases I use when working with the OpenBSD port tree:
176 alias mup="make update-patches"
177 alias mupl="make update-plist"
178 alias mpldc="make port-lib-depends-check"
179 alias pbuild="env MAKE_JOBS=5 time make"
180 alias build="pbuild 2>&1 | tee build"
181 alias pclean='make clean="package plist"'
183 This one is pretty sophisticated, I've stolen it from jca@
185 # check shared libs version
190 for f in $(make show=SHARED_LIBS); do
191 [ "$((cnt++ % 2))" -eq 1 ] && continue
193 /usr/src/lib/check_sym /usr/local/lib/lib$f.so* \
194 $(make show=WRKINST)/usr/local/lib/lib$f.so*
198 And even more aliases:
200 alias mopnew="mdirs ~/Maildir/op | grep -v emacs | mlist -st | mthread -r | mseq -S"
202 for c in com rep fwd bnc; do
203 alias m$c="VISUAL='mg -f auto-fill-mode' m$c"
204 alias o$c="m$c -from 'Omar Polo <op@openbsd.org>'"
207 And finally some aliases for mq
209 alias pnq="NQDIR=/tmp/ports/ nq "
210 alias pfq="NQDIR=/tmp/ports/ fq "
212 Stuff to use my own purritobin instance
214 : ${P_SERVER=paste.omarpolo.com}
219 shell client to upload a plaintext message
222 curl --silent --max-time "${P_MAXTIME}" \
223 --data-binary "@${1:-/dev/stdin}" \
224 "${P_SERVER}:${P_PORT}/${P_TIME}"
227 shell client to upload an encrypted message
230 key="$(openssl rand -hex 32)"
231 iv="$(openssl rand -hex 16)"
232 url="$(openssl enc -aes-256-cbc -K ${key} -iv ${iv} -e -base64 -A < ${1:-/dev/stdin} | purr)"
233 printf "%s\n" "${url%\/*}/paste.html#${url##*\/}_${key}_${iv}"
243 paste=$(printf '%s\n' "${vals}" | cut -d_ -f1)
244 key=$(printf '%s\n' "${vals}" | cut -d _ -f2)
245 iv=$(printf '%s\n' "${vals}" | cut -d _ -f3)
246 curl --max-time "${P_MAXTIME}" --write-out "\n" --silent \
247 "${baseurl}/${paste}" | openssl enc -aes-256-cbc \
248 -base64 -d -K ${key} -iv ${iv}
249 unset url baseurl vals paste key iv
252 a little awk oneliner to show the stats of a unified diff
258 END { printf("additions:\t%d\nremoval:\t%d\n", a, m) }
262 find(1) is an invaluable tool and I use it all the time. walk is an
263 attempt to build a wrapper around some common usages of find that is a
264 little bit less verbose to use. The name is stolen from 9front, but the
265 implementation is completely different.
267 # usage: walk [dir] [type] [name regexp] [! command to execute]
270 if [ $# -eq 0 ]; then
279 if [ -n "$1" -a -d "$1" ]; then
290 if [ -n "$1" -a "x$1" != "x!" ]; then
295 if [ "x$1" = x! ]; then
299 if [ $# -eq 0 ]; then
300 find "$dir" $type -iname "$name"
302 find "$dir" $type -iname "$name" -exec "$@" {} +
