Sanitize JSON: Blank Out Sensitive Content

jq '
  walk(
    if type == "string" or type == "number" or type == "boolean"
    then "" 
    else . 
    end
  )
' secrets.json

Extract a portion of a log file based on the starting timestamp

If there are multiple matches, this command takes the last start and the first end, which may not be what you want. If that is acceptable, consider anchoring one line before the start and one after the end to ensure the full range is captured:

sed -n '/^2025-08-28 01:00:04,114/,/^2025-08-28 01:00:08,178/p' /tmp/test.log

pbcopy from linux shell

Working across Mac, Windows, and Linux via SSH? Ever wished you could pbcopy from within a remote SSH session? Add this "one-liner" to your ~/.bashrc or ~/.profile:

pbcopy() {
 printf "\033]52;c;%s\033\\" "$(cat | base64 -w0)"
}

If you use tmux you will need a bit more:

pbcopy() {
  if [ -n "$TMUX" ] && command -v tmux >/dev/null 2>&1; then
    # Read stdin into tmux buffer and also copy to system clipboard via OSC 52
    tmux load-buffer -w -
  else
    # Direct OSC 52 for non-tmux shells
    # Portable base64: avoid line wraps
    printf '\033]52;c;%s\007' "$(base64 | tr -d '\n')"
  fi
}

To support it inside screen:

pbcopy () {
    if [ -n "$TMUX" ] && command -v tmux > /dev/null 2>&1; then
        tmux load-buffer -w -;
    elif [ -n "$STY" ]; then
        # inside GNU screen: wrap OSC 52 in screen's DCS passthrough (\eP ... \e\\)
        # so screen forwards it to the outer terminal instead of swallowing it
        printf '\033P\033]52;c;%s\007\033\\' "$(base64 | tr -d '\n')";
    else
        printf '\033]52;c;%s\007' "$(base64 | tr -d '\n')";
    fi
}

Sanitize your json config before sharing it

jq 'def scrub:
      if type == "object"
      then with_entries(.value |= scrub)
      else empty
      end;
    scrub' config.json

ChatCommit: Auto-Generated Git Commit Message Summarizer

Remove trailing spaces from file

sed -i '' 's/[[:space:]]*$//' my_file_path.ext

Uninstalling python from windows where no uninstaller can be found

1. Find out the exact version installed for the package you want to remove. In this case 3.12:

PS > py --list
 -V:3.13 *        Python 3.13 (64-bit)
 -V:3.12          Python 3.12 (64-bit)
PS > py -3.12 --version
Python 3.12.0

2. Find out where the executable is for that version, in this case it is in C:\Program Files\Python312\python.exe:

PS > py -3.12 -c "import sys; print(sys.executable)"
C:\Program Files\Python312\python.exe

3. Delete the root folder containing the executable to remove that python version:

PS > Remove-Item -Path "C:\Program Files\Python312" -Recurse -Force

4. Remove registry entries for that installation (you should find 3.12 as an entry in our case in one or the two places below):

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\

and/or

Computer\HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\

5. Confirm the only version installed is the one you expect. In our case we expect only 3.13:

PS > py --list
 -V:3.13 *        Python 3.13 (64-bit)

Find content of all relevant files in a project respecting .gitignore

fd -t f -0 | xargs -0 -I {} sh -c 'echo "File: {}"; cat {}'

Remove server header in IIS to stop disclosing running version(s)

Set attribute removeServerHeader="true" in web.config node configuration."system.webServer".security.requestFiltering.

When the clock on MAC OSX goes off

To sync your macOS clock and prevent it from drifting after sleep cycles, follow these steps:

- Run this command to sync time:

sudo sntp -sS time.apple.com

- Go to System Settings > Date & Time and turn off "Set time and date automatically."

- Remove the current time settings:

sudo rm /var/db/timed/com.apple.timed.plist

- Reboot the Mac.

- After reboot, turn on "Set time and date automatically" in System Settings > Date & Time. This should ensure your clock remains accurate.

Use specific keys for git commands

export GIT_SSH_COMMAND="ssh -i ~/.ssh/my.key"

Minimal kubernetes pods log shipping with fluent-bit

I just released how to ship kubernetes cluster pod logs to Amazon Simple Storage Service (AWS S3) using fluent-bit. Platform engineers should do their best to keep cloud independence. This setup will work for Azure AKS, Google GKE and Amazon EKS. The choice for S3 is just a pick and not a preference. Google Cloud Storage (GCS) or Azure Blob Storage (ABS) will do the job as well (just check fluent-bit docs and adapt the code below for your choice).

Print the content of all zipped files with names containing a regex

Securely sharing the content of your MAC OSX ~/.zshrc and other profile configuration files

cat ~/.zshrc | sed -E "s/(export[^=]*=).*/\1***/"

Replace 4 spaces indentation by 2 spaces indentation in vi/vim

:%s/[ ]\{4\}/  /g

Run tree command respecting .gitignore

My .vimrc for google (and amazon) cloud shell

Will keep here what I am using in google (and amazon) cloud shells.

" keep all defaults
source $VIMRUNTIME/defaults.vim
" disable visual mode when using mouse
set mouse=c
" keep all defaults
source $VIMRUNTIME/defaults.vim
" disable visual mode when using mouse
set mouse=c
" paste as copied
set paste
" indentation
set tabstop=2        " Set the width of a tab character to 2 spaces
set shiftwidth=2     " Set the number of spaces to use for each step of (auto)indent
set expandtab        " Convert tabs to spaces
set softtabstop=2    " Set the number of spaces a Tab counts for while performing editing operations, like inserting a Tab or using BS
set smartindent      " Enable smart indenting for new lines

Sharing code without using git

Sometimes you do not want to commit to git for security reasons and yet you want to test your code somewhere else.
Run the below from your local copy of the git repository:

rsync -av --exclude-from='.gitignore' --exclude='.git' . ~/Downloads/my-repo-copy
cd ~/Downloads/my-repo-copy
zip -r ~/Downloads/my-repo-copy.zip ./

Copy the content to the remote location and run the below:

mkdir my-repo
mv my-repo-copy.zip my-repo/
cd my-repo
unzip my-repo-copy.zip
rm my-repo-copy.zip

Apps not opening from Android search results

Apps | Chrome | Storage and Cache | Clear Cache

Copy MongoDB indexes from one host database to another

Do it in one environment. Use it in all the rest: