Preview oh-my-zsh themes

preview_xterm.sh

#!/usr/bin/env bash

# Backup and modify .zshrc
cp $HOME/.zshrc $HOME/.zshrc_
sed -i "s/^ZSH_THEME=/\# \0/" $HOME/.zshrc
echo >> $HOME/.zshrc
echo "echo \"\\n\\n\\033[1;31m\$ZSH_THEME\\033[0m\\n\\n\"" >> $HOME/.zshrc

# Using xterm
CMD="xterm -ls -e /usr/bin/env zsh"

# Iterate theme files in the .oh-my-zsh/themes
for theme in $( ls $HOME/.oh-my-zsh/themes | cut -d. -f1 )
do
  ZSH_THEME="$theme" $CMD &

  # Keep only four emulators open at a time
  while [ $( echo "$(jobs)" | grep Running | wc -l ) -ge 4 ]; do sleep 1; done
done

# Wait last four to be closed
wait

# Restore .zshrc
mv $HOME/.zshrc_ $HOME/.zshrc

Awesome script. Helped me find a theme I've been looking for for months.