Small pieces of wisdom I acquire every day

• Show the AS number in traceroute (15 Jul 2020)

• Leave only a specific directory in git history (14 Jul 2020)

• Keep the Bazel server alive between Jenkins builds (21 Apr 2020)

• Compare Bazel execlogs to find non-deterministic parts of the build (20 Apr 2020)

• The Bazel ZIP tooling uses fixed timestamps for build reproducibility (28 Mar 2020)

• Use $LINENO to get the current line number in a bash script (27 Aug 2019)

• Angular calls ngOnInit only on components which have it build-time (26 Aug 2019)

• Use the Omit helper type to drop properties from a type (25 Aug 2019)

• Construct script-relative paths in bash (25 Mar 2019)

• View the effective tsconfig of the TypeScript compiler (5 Jan 2019)

• There is an "unknown" type in TypeScript (5 Jan 2019)

• ssh-keygen can remove entries from known_hosts (4 Jan 2019)

• There is a lookup type in TypeScript (3 Jan 2019)

• Always import lodash with lodash/<fn name> (2 Jan 2019)

• See brew dependencies in a tree (10 Sep 2018)

• document.body is not accessible from scripts in the head element (10 Sep 2018)

• Use VisibleForTesting to mark methods used only by tests (7 Sep 2018)

• There is a SourceMap HTTP header (7 Sep 2018)

• Nest wildcards when matching file names (7 Sep 2018)

• Automatically highlight all search matches in Firefox (7 Sep 2018)

• Use the Clear-Site-Data HTTP header to clear browsing data (2 Sep 2018)

• Match all files except specific ones in zsh (31 Aug 2018)

• Match elements with no siblings using a CSS selector (30 Aug 2018)

• Find the ratio between physical and device-independent pixels (30 Aug 2018)

• Call a function during a browser's idle periods (30 Aug 2018)

• Numeric Java streams provide summary statistics (29 Aug 2018)

• See what depends on a formula in Homebrew (23 Mar 2018)

• Ruby blocks can be curried (20 Mar 2018)

• nginx has a macro-only queue implementation (20 Mar 2018)

• nginx uses bitwise operations for HTTP method parsing (19 Mar 2018)

• Programmatically get boot time on macOS (17 Mar 2018)

• See the commands to be run by make (16 Mar 2018)

• Allow only one version of a package in yarn (16 Mar 2018)

• Speed up OS install USB creation by using unbuffered I/O on macOS (15 Mar 2018)

• Show only major/minor/patch versions in bundle outdated (15 Mar 2018)

• Find slowest RSpec tests (14 Mar 2018)

• Find CRLF line endings with a regex (14 Mar 2018)

• Object#try accepts blocks (13 Mar 2018)

• Change ownership when copying files in Docker (3 Oct 2017)

• View network interface stats on FreeBSD (22 Sep 2017)

• Mirror a git repository (15 Sep 2017)

• Some browsers replace the error pages if their length is below a certain threshold (24 Aug 2017)

• Logout another macOS user from the console (19 Aug 2017)

• Use an alternative separator for sed (18 Aug 2017)

• Define focused specs in Jasmine (18 Aug 2017)

• Navigate in the zsh directory stack (6 Feb 2017)

• Create a .ruby-version file with RVM (24 Jan 2017)

• Set operations in Haskell (11 Jan 2017)

• Touching files without touch (9 Jan 2017)

• Find or replace a substring with String#[]/String#[]= (17 Aug 2016)

• Sort "human-readable" sizes in bash (16 Aug 2016)

• Cancel requestAnimationFrame() (15 Aug 2016)

• Get directory of current script in Python (11 Jun 2016)

• Kill a process group in node (22 Feb 2016)

• Mock require in Node (19 Feb 2016)

• Destructing assignment in JavaScript (18 Feb 2016)

• Locally ignore a file from git index (17 Feb 2016)

• Find duplicate code with jscpd (16 Feb 2016)

• Use a mock clock in Jasmine (15 Feb 2016)

• Generate an UUID in bash (12 Feb 2016)

• Catching signals in bash (12 Feb 2016)

• Set time limit for a MongoDB query (10 Feb 2016)

• Send terminal notifications on OS X (9 Feb 2016)