Useful bash/zsh functions

.bashrc

# Create a directory and enter it
# Usage:
# mkcd dirname
mkcd ()
{
  mkdir -p -- "$1" && cd -P -- "$1"
}

# Resursively run sed on files
# Usage:
# rsed 's/foo/bar/g' dir1 dir2 file3
rsed ()
{
  find ${@:2} -type f -exec sed -i "$1" {} +
}

# Change file extension in bulk
# Usage:
# chext oldext newext file1 file2 file3
chext ()
{
  for f in ${@:3}; do
    if [[ $f == *.${1} ]]; then mv -- "$f" "${f%.${1}}.${2}"; fi
  done
}

# Run a command on (multiple) hosts
# Usage:
# sshc "ls -lah" host1 host2
sshc ()
{
 for host in ${@:2}; do
    printf "\033[0;34mRunning on \033[0;31m${host}\033[0m\n";
    ssh -q -t $host "$1";
  done
}