Helpful commands

helpful_commands.sh

# Find "text" in some /path/to/search
find /path/to/search -type f -print0 | xargs -0 grep -l "text"

# Restore the deleted files in a git repository
git ls-files -d | xargs git checkout --

# Move all files in a directory including .files
# http://superuser.com/questions/62141/linux-how-to-move-all-files-from-current-directory-to-upper-directory
(shopt -s dotglob; mv -- * /path/to/destination)

# Calculate checksum for EEPROM bin file
# same as checksum-16 on HxD in Windows
cksum -o 2 filename.bin | awk '{ print $1 }' | xargs printf "%x\n"

# tell git to prune loose objects now
# http://www.kernel.org/pub/software/scm/git/docs/git-gc.html
git gc --prune=now

# reconfigure shell in ubuntu (i.e. change from dash to bash)
sudo dpkg-reconfigure dash

# How to use > in an xargs command
# http://stackoverflow.com/questions/845863/how-to-use-in-an-xargs-command

# find tag on commit
git describe --tags --exact-match

# find ubuntu version
cat /etc/issue

# override shell variables
$ cat override.sh
#!/bin/bash

: ${var1:=foo} # var1 will take on the value "foo" if not overridden
var2=${var2:-foo} # same thing but more typing

echo "var1 is $var1 | var2 is $var2"

# push an existing repo to github
# http://help.github.com/move-a-repo/
git clone --bare url/for/my-old-repo.git
cd my-old-repo.git
git push --mirror git@github.com:mycompany/my-new-repo.git
cd ..
rm -rf my-old-repo.git
# then checkout the old repo
git clone url/for/my-old-repo.git
# and add github as a remote
git remote add github git@github.com:mycompany/my-new-repo.git
# checkout a branch
git checkout -b branch origin/branch
# make changes and then push to github
git push github branch

# delete tags on remote
git tag -d 12345
git push origin :refs/tags/12345

# change remote url
git remote set-url origin ssh://remote@host:port/repo.git

# set var from command output in batch script
for /f [options] %%a in ('CMD') do @set var=%%a

# bazar colordiff
bzr cdiff | less -r

# show Ubuntu version
cat /etc/issue

# diff binary files
vbindiff file1 file2

# SHA-1 digest
openssl sha1 file

# create a PKZip archive similarly to the Finder's Compress functionality
# http://stackoverflow.com/questions/107903/how-to-create-a-zip-file-in-the-same-format-as-the-finders-compress-menu-item
ditto -c -k --rsrc --sequesterRsrc --keepParent src_directory archive.zip

# apply a Macports patch file
patch -p0 < ~/Downloads/Portfile-postfix.diff

# clear out apt-get cached lists
sudo rm -rf /var/lib/apt/lists/

# time machine diagnostic utility for bug reports to apple
sudo tmdiagnose

# print $PATH on separate lines
echo "$PATH" | tr ':' '\n'

# shutdown ESXi host
/sbin/shutdown.sh && /sbin/poweroff

# check maintenance mode
vim-cmd hostsvc/hostsummary | grep -i maintenance

# put ESXi host into maintenance mode
vim-cmd hostsvc/maintenance_mode_enter

# exit maintenance mode
vim-cmd /hostsvc/maintenance_mode_enter

# squash branch onto current branch but don't commit
git merge --squash branch

# rebase on branch but resolving all merge conflicts by selecting the changes in branch over the ones in the current branch
git rebase -s recursive -X theirs branch

# create pdf from markdown
pandoc --latex-engine=xelatex --variable mainfont="Lucida Grande" --variable sansfont="Lucida Grande" --variable monofont="Menlo" -o Welcome.pdf Welcome.text

# exclude ports from "port upgrade outdated"
sudo port upgrade outdated and not gcc45*

# amend commit author
git commit --amend --reset-author

# list non-apple kernel extensions
kextstat | grep -v com.apple

system_profiler SPUSBDataType | grep -C 7 FTDI

# flash drive mark partition active on OSX before using unetbootin
fdisk -e /dev/rdisk1
f 1
write
exit

# git print short rev for ref
git rev-parse --short <ref>

# eject disk mac
drutil tray eject

# copy a disk image to a physical disk with progress status output
diskutil list
diskutil unmountDisk /dev/diskX
pv -pterb source.img | sudo dd of=/dev/diskX bs=1m

# recursively remove .DS_Store files
find . -name '.DS_Store' -type f -delete

# delete Time Machine backups without "Operation not permitted" errors
sudo /System/Library/Extensions/TMSafetyNet.kext/Contents/Helpers/bypass rm -rf /Volumes/Time\ Machine/Backups.backupdb/<backup>

# Fix permissions to what git thinks they should be
# https://stackoverflow.com/questions/2517339/how-to-recover-the-file-permissions-to-what-git-thinks-the-file-should-be
git diff -p -R --no-color \
    | grep -E "^(diff|(old|new) mode)" --color=never  \
    | git apply

# connect to a serial --> IP server
# https://stackoverflow.com/questions/26373006/using-socat-for-raw-serial-connection
stty raw ; socat -,escape=0x03 tcp:172.27.164.198:1001,nonblock ; stty sane

# Show Time Machine log messages
log show --predicate 'subsystem == "com.apple.TimeMachine"' --last 4h

# Delete Time Machine local snapshots
tmutil listlocalsnapshots /
sudo tmutil deletelocalsnapshots 2018-03-01-002010

# Get VSCode to play nice with pyenv installed via anyenv
# https://github.com/Microsoft/vscode-python/issues/3066
# Add the following to $HOME/Library/Application Support/Code/User/settings.json
# "python.terminal.activateEnvironment": false

# Disable two finger swipe to go back in Chrome on MacOS
defaults write com.google.Chrome AppleEnableSwipeNavigateWithScrolls -bool FALSE

xattr -r -d com.apple.quarantine /Applications/KiCad

/usr/bin/chflags nohidden ~/Library
xattr -d com.apple.FinderInfo ~/Library

defaults write com.apple.Finder AppleShowAllFiles true
killall Finder

#open-vm-tools
# https://gist.github.com/darrenpmeyer/b69242a45197901f17bfe06e78f4dee3
# add to /etc/fstab
.host:/	/mnt/hgfs	fuse.vmhgfs-fuse	auto,allow_other	0	0

# remove CR from line endings in a git repo
find . -type f -not -path '*/\.git/*' -print0 | xargs -0 dos2unix

# disable Google Chrome swipe navigate with scrolls
defaults write com.google.Chrome AppleEnableSwipeNavigateWithScrolls -bool FALSE

# run this when sign out of iCloud is not working
defaults delete MobileMeAccounts

# don't write .DS_Store to SMB shares
# https://support.apple.com/en-us/HT208209
defaults write com.apple.desktopservices DSDontWriteNetworkStores -bool TRUE

# Warning: A newer Command Line Tools release is available.
# Update them from Software Update in System Preferences or run:
softwareupdate --all --install --force

# If that doesn't show you an update run:
sudo rm -rf /Library/Developer/CommandLineTools
sudo xcode-select --install

# Alternatively, manually download them from:
# https://developer.apple.com/download/more/.

# checkout a github PR locally
git fetch origin pull/ID/head:BRANCHNAME
git checkout BRANCHNAME

# install python with updated tkinter
# https://medium.com/@xogk39/install-tkinter-on-mac-pyenv-f112bd3f4663
brew install tcl-tk
pyenv uninstall 3.9.1
env \
  PATH="$(brew --prefix tcl-tk)/bin:$PATH" \
  LDFLAGS="-L$(brew --prefix tcl-tk)/lib" \
  CPPFLAGS="-I$(brew --prefix tcl-tk)/include" \
  PKG_CONFIG_PATH="$(brew --prefix tcl-tk)/lib/pkgconfig" \
  CFLAGS="-I$(brew --prefix tcl-tk)/include" \
  PYTHON_CONFIGURE_OPTS="--enable-framework --with-tcltk-includes='-I$(brew --prefix tcl-tk)/include' --with-tcltk-libs='-L$(brew --prefix tcl-tk)/lib -ltcl8.6 -ltk8.6'" \
  pyenv install 3.9.1
import tkinter
tkinter.TclVersion, tkinter.TkVersion
tkinter._test()

# install python 2.7.18 with updated tkinter
CPPFLAGS="-I$(brew --prefix tcl-tk)/include/tcl-tk" \
LDFLAGS="-L$(brew --prefix tcl-tk)/lib -ltk8.6 -ltkstub8.6 -ltcl8.6 -ltclstub8.6" \
pyenv install 2.7.18

# disable Chrome invalid certificate check for localhost
chrome://flags/#allow-insecure-localhost

# print kicad plugin path
import pcbnew
print pcbnew.PLUGIN_DIRECTORIES_SEARCH

# sign off previous commit
git commit --amend --signoff

# install python 3.8.2 on Monterey
pyenv install 3.8.2 --patch < <(curl -sSL https://github.com/python/cpython/commit/8ea6353.patch)

# uninstall all packages installed by pip
pip uninstall -y -r <(pip freeze)

# compile all python files in a directory
python -m compileall .

# view non-printable characters
# https://www.soscisurvey.de/tools/view-chars.php

# fix git submodules gon crazy
git submodule deinit --all -f
git submodule sync
rm -rf .git/modules/*
git submodule update --init

# Fix snagit crash on startup
cd ~/Library/Group Containers/7TQL462TU8.com.techsmith.snagit/Snagit 2022/PendingCaptures
rm *

# date a file in git repo was last modified
git log -1 --format="%as" -- <file>

# short rev a file in git repo was last modified
git rev-list --abbrev-commit -1 HEAD -- <file>

https://kaanlabs.com/ubuntu-set-scaling-factor-to-200-percent/