Change `==` to `=`

yadm

@@ -43,7 +43,7 @@ function main() {
   if [ -z "$*" ] ; then
     #; no argumnts will result in help()
     help
-  elif [ "$1" == "gitconfig" ] ; then
+  elif [ "$1" = "gitconfig" ] ; then
     #; 'config' is used for yadm, need to use 'gitcofnig' to pass through to git
     shift
     git_command config "$@"
@@ -114,7 +114,7 @@ function alt() {
   cd $YADM_WORK
 
   #; only be noisy if the "alt" command was run directly
-  [ "$YADM_COMMAND" == "alt" ] && loud="YES"
+  [ "$YADM_COMMAND" = "alt" ] && loud="YES"
 
   #; loop over all "tracked" files
   #; for every file which matches the above regex, create a symlink
@@ -197,7 +197,7 @@ function decrypt() {
 
   YADM_WORK=$(git config core.worktree)
 
-  if [ "$DO_LIST" == "YES" ] ; then
+  if [ "$DO_LIST" = "YES" ] ; then
     tar_option="t"
   else
     tar_option="x"
@@ -206,7 +206,7 @@ function decrypt() {
   #; decrypt the archive
   (gpg -d "$YADM_ARCHIVE" || echo 1) | tar v$tar_option -C "$YADM_WORK"
   if [ $? = 0 ] ; then
-    [ ! "$DO_LIST" == "YES" ] && echo "All files decrypted."
+    [ ! "$DO_LIST" = "YES" ] && echo "All files decrypted."
   else
     error_out "Unable to extract encrypted files."
   fi
@@ -413,7 +413,7 @@ function error_out() {
 function auto_alt() {
 
   #; process alternates if there are possible changes
-  if [ "$CHANGES_POSSIBLE" == "1" ] ; then
+  if [ "$CHANGES_POSSIBLE" = "1" ] ; then
     auto_alt=$(config --bool yadm.auto-alt)
     if [ "$auto_alt" != "false" ] ; then
       alt
@@ -425,7 +425,7 @@ function auto_alt() {
 function auto_perms() {
 
   #; process permissions if there are possible changes
-  if [ "$CHANGES_POSSIBLE" == "1" ] ; then
+  if [ "$CHANGES_POSSIBLE" = "1" ] ; then
     auto_perms=$(config --bool yadm.auto-perms)
     if [ "$auto_perms" != "false" ] ; then
       perms