como foi postado nos comentários tantas opções;
#!/bin/bash
find /home/hts/.hts/tvheadend/input/dvb/networks/1d38df81855dee2d39e692ecc4caf05c/muxes -maxdepth 1 -type d | while read ad; do
find "$ad/config/services/" -type f -exec sed -i 's/"enabled": true,/"enabled": true,/' '{}' \;
done
ou
#!/bin/bash
dirarr=($(find /home/hts/.hts/tvheadend/input/dvb/networks/1d38df81855dee2d39e692ecc4caf05c/muxes -maxdepth 1 -type d))
for dir in ${dirarr[@]}; do
editfile=$(ls -1 $dir/config/services/)
sed -i 's/"enabled": true,/"enabled": false,/' $editfile
done