A script to give executable file permissions to files in a Gist.

gist+x.sh

#! /bin/sh
#
# @file gist+x.sh
#
# Gives executable file permissions to files in a Gist.
#
set -e
prog=`basename "$0"`

# Command line options.
opt_ammnd=false

# Wraps "mktemp -d $1XXXXXXXXXX"
mktemp_d() {(
  umask 077
  {
    # Use mktemp if available.
    dir=`mktemp -d "$1XXXXXXXXXX" 2>/dev/null` && [ -d "$dir" ]
  } || {
    # Fall back on mkdir.
    dir=
    i=0
    while [ $i -lt 100 ]; do
      next_dir=$1$$$i$RANDOM$RANDOM
      if mkdir "$next_dir" >/dev/null 2>&1; then
        dir=$next_dir
        break
      fi
      i=`expr $i + 1`
    done
    [ "x$dir" != x ] && [ -d "$dir" ]
  } || {
    echo "$prog: error: failed to create a temporary directory" >&2
    exit 1
  }
  echo "$dir"
)}

# Parse the command line options.
for opt_arg do
  case $opt_arg in
    --amend)
      opt_amend=:
      ;;
    --)
      shift
      break
      ;;
    -*)
      echo "$prog: error: unknown option \"$opt_arg\"" >&2
      exit 1
      ;;
    *)
      break
      ;;
  esac
  shift
done

if [ $# -eq 0 ]; then
  echo "Usage $prog <id>" >&2
  exit
fi

# Create a working directory.
tmpdir=`mktemp_d "${TMPDIR:-/tmp}/tmp"`
trap 'rm -rf "$tmpdir"' 0 1 2 13 15

(
  cd "$tmpdir"
  git clone ssh://gist.github.com/$1.git || \
  git clone https://gist.github.com/$1.git
  cd $1
  git config user.name "`git log -1 --pretty=%an`"
  git config user.email "`git log -1 --pretty=%ae`"
  for f in *; do
    if [ -f "$f" ]; then
      chmod +x "$f"
    fi
  done
  git add -u
  if $opt_amend; then
    git commit --amend --allow-empty-message -m ''
    git push -f origin master
  else
    git commit -m 'Change file permission'
    git push origin master
  fi
)

The git clone command in line 71 should change from

git clone ssh://gist.github.com/$1.git

to

git clone git@gist.github.com:$1.git

for ssh, or else it's giving me

me@gist.github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

error.

Also, in line 66 the

trap 'rm -rf "$tmpdir"' 0 1 2 13 15

can be changed to

trap 'rm -rf "$tmpdir  2> /dev/null"' 0 1 2 13 15

to avoid error when the tmp folder does not exists.

But eitherway thanks for the nice script :)