convert "Screen Shot 2021-07-07 at 09.47.13.png" \( +clone -background black -shadow 80x20+0+15 \) +swap -background transparent -layers merge +repage "Screen Shot 2021-07-07 at 09.47.13.png"

which will turn this:

into this:

Pro-tip: You can create a pseudo-function in your BASH or ZSH environment - e.g., in your ~/.bashrc file, add this line:

shadow () { convert "$@" \( +clone -background black -shadow 80x20+0+15 \) +swap -background transparent -layers merge +repage "$@"; }

source ~/.bashrc

shadow "Screen Shot 2021-07-07 at 09.47.13.png"

$ inkscape --export-type=png --export-dpi=200 --export-background-opacity=0 file.svg

select max(id) from users;

+-----+ 
| max | 
+-----+ 
| 896 | 
+-----+ 
1 rows in set (0.03 sec)

delete from users where created_at > timestamp 'yesterday';
96 rows in set (0.15 sec) 

select setval('users_id_seq',(select max(id) from users));

+--------+
| setval |
+--------+
| 800    |
+--------+
1 rows in set (0.04 sec)

⌘-K(or T) to open the channel switcher (I navigate channels solely with this shortcut and have my slack set to hide all channels without new messages)

⌘-F opens the search box. Can modify searches with from:@user and in:#channel for extra awesomeness

Up Arrow will edit you last message; perfect for when you hit Enter too early or mispell things

+:emoji: react to the last message. Have to be quick so nobody else replies before you react though or you'll react to the wrong message

/remind [someone usually myself] [to do something] [at this time in words] not really a shortcut but is great for not forgetting simple tasks

The channel switcher also supports fuzzy matching to some extent. If a channel is named foo-bar you can type fb to show it. It's doesn't work so well with multi-user-dm's though.

Sometimes I want to go back to the last page I viewed while still keeping the same one open. You can very easily achieve this with shortcuts

1. ⌘-L to focus the omnibox
2. ⌘-Enter to open the current URL in a new tab
3. ⌘-⇧-[ to go back to the original tab
4. ⌘-[ to go back to the previously viewed page in the original tab

Open term (or equivalent) and paste the following one-liner:

defaults write com.apple.dock persistent-apps -array-add '{tile-data={}; tile-type="spacer-tile";}'; killall Dock

When the Dock restarts, there should be a draggable blank space that you can move anywhere. Repeat to your heart's desire.

sudo scutil --set HostName "New Name" 

sudo scutil --set LocalHostName "New Name"

sudo scutil --set ComputerName "New Name"

dscacheutil -flushcache 

Build an application you can drag-and-drop videos onto to compress them significantely:

Make sure you have ffmpeg installed (brew install ffmpeg).

Create a new Apple Script app: AppleScript on open filelist repeat with i in filelist tell application "Terminal" do script "ffmpeg -i " & POSIX path of i & " -vcodec h264 -acodec mp2 " & POSIX path of i & "_compressed.mp4" end tell end repeat end open

wifi_password() {
    airport="/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport"
    ssid="`$airport -I | awk '/ SSID/ {print substr($0, index($0, $2))}'`"
    pwd="`security find-generic-password -D 'AirPort network password' -ga \"$ssid\" 2>&1 >/dev/null`"
    echo $pwd
}

$ wifi_password

password: "!forHackers"

Use brew cleanup to get some spaces back!

Use brew cleanup -n to list what's gonna get cleanup

Use brew cleanup to clean only that particular formula

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