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mac and mac os ​

extract rpm file to current directory ​

bash
brew install rpm2cpio
rpm2cpio file.rpm | cpio -i --make-directories

use vscode code command on terminal without admin rights ​

add this to your .zshrc

code () { VSCODE_CWD="$PWD" open -n -b "com.microsoft.VSCode" --args $* ;}

set a mac mini to turn on after a power failure without macos ​

if using linux on a mac mini hardware, search for a LPC controller

bash
sudo lspci | grep LPC

set the auto start flag on this controller

bash
sudo setpci -s 00:1f.0 0xa4.b=0

if needed, search for the right flag on this datasheet.

resizing an sparseimage ​

first, unmount the image if in use.

to increase the image size to 50Gb:

bash
hdiutil resize -size 50g filename.sparseimage

to shrink the image size:

bash
hdiutil compact filename.sparseimage

reference: Sparse image Wikipedia article

find a file encoding ​

bash
$ file -I original.csv
original.csv: text/plain; charset=iso-8859-1

convert file to another encoding ​

bash
iconv -f iso-8859-1 -t utf-8 < original.csv > copy.csv

remove windows line breaks ​

install homebrew. follow the instructions on https://brew.sh

after that, use homebrew to install dos2unix

bash
brew install dos2unix

and use it

bash
dos2unix original.csv

rebuild the spotlight index ​

bash
sudo mdutil -E /

what the -E option does?

text
     -E  This flag will cause each local
         store for the volumes indicated to
         be erased.  The stores will be
         rebuilt if appropriate.

remove duplicated entries in the open with list ​

bash
/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user

reference: Rebuild LaunchServices to Fix Duplicate Entries in OS X’s ‘Open With’ Menu

add a directory to the $PATH ​

on mac os there's a directory called /etc/paths.d. inside that, the path_helper utility add the reference to all directories used on $PATH.

to add any directory to /etc/paths.d:

bash
sudo -s 'echo "/my/new/path" > /etc/paths.d/my'

pay attention: the files inside /etc/pths.d can't have empty line endings.

reference: Mac OS X: Set / Change $PATH Variable

run more than one instance of an app ​

bash
open -n -a "app name"