wknapik

Run

launchctl load -w /Library/LaunchDaemons/local.pfctl.plist

Explanation

macOS 10.11 introduced System Integrity Protection, which makes /System (and consequently /System/Library/LaunchDaemons/com.apple.pfctl.plist) immutable, even to root. This means the plist can't be modified to enable packet filter (by adding the -E switch to pfctl). The solution is to create a custom launchd daemon, which only calls pfctl -E (calling pfctl -E -f /etc/pf.conf conflicts with com.apple.pfctl.plist, which may cause failure and pf not being enabled).

wknapik

# Requires: bash (I use it in zsh), coreutils, git.

# Print link(s) to file(s) in repo(s), with optional line numbers.
# $@ := file_path[:file_line] [ file_path2[:file_line2] [ ... ] ]
repolink() {
    local branch f file host origin url_path
    for f in "$@"; do
        file="$(realpath "$f")"
        checkout_path="$(git -C "$(dirname "$file")" rev-parse --show-toplevel)"
        origin="$(git -C "$checkout_path" config --get remote.origin.url)"

wknapik

// This generates a consistent, per-branch, not-really-random,
// execution time between 20:00 and 5:59 every day.

branchNum = BRANCH_NAME.inject(0) { acc, c -> acc + ((c as char) as int) }
cronHour = [20, 21, 22, 23, 0, 1, 2, 3, 4, 5][branchNum % 10]
cronMinute = branchNum % 60
cronParams = "${cronMinute} ${cronHour} * * *"

// ...

wknapik

⭐	restaurant	cuisine	what to get	location	delivery	reviews	remarks
	Al Bacaro	italian	spaghetti al ragù	centrum	ubereats	tripadvisor
	The Bab	korean	dolsot bibimbab	oost, west, zuid	ubereats, ubereats	[tripadvisor](https://www.tripadvisor.com/Restaurant_Review-g188590-d17613577-Reviews-The_BAB_A

wknapik

# This function greps everything between the last two prompts in the current tmux pane.
# Arguments are passed to `grep -i', so any valid `grep' options can be supplied.
# Requirements: coreutils, grep, sed, tmux, zsh.

just() {
    local -r max=10000 psone="$(print -P "$PS1"|sed "s,\x1B\[[0-9;]*[a-zA-Z],,g")"
    local inside=0;
    tmux capture-pane -pS-"$max" -E"$max"|tac|\
        while IFS= read -r line; do
            case "$inside,$line" in

wknapik

% htpasswd -nb foo bar >passwd
% ./chkpasswd.exp passwd foo bar
% echo "$?"
# 0 = match, 1 = no match

wknapik

#!/usr/bin/env bash

# Requirements: bash, coreutils, fzy, xdotool, xterm.
#
# Position and decorations can be set in i3 with something like:
# for_window [class="^FuzzyRun"] floating enable border none move position center
#
# Either `-fullscreen', or `-geometry' should be used. With both in place,
# `-fullscreen' takes precedence.

wknapik

# Example usage: $(call retry,3,something that might fail)
retry = for ((i=0; i < $1; ++i)); do ( $2 ) && exit 0; sleep 3; done; false

wknapik

# Example usage: $(call find,. /foo,*.bar *.baz)
find = $(foreach path,$1,$(foreach pattern,$2,$(wildcard $(path)/$(pattern)) $(foreach dir,$(wildcard $(path)/*/),$(call find,$(dir:%/=%),$(pattern)))))

wknapik

#!/usr/bin/env bash

set -eEo pipefail
shopt -s inherit_errexit >/dev/null 2>&1 || true

if [[ ! "$#" -eq 2 || "$1" != --bucket ]]; then
    echo -e "USAGE: $(basename "$0") --bucket <bucket>"
    exit 2
fi