I would like to know if a particular folder is present or not. I used the following commandfind /mnt/md0/ -maxdepth 1 -name 'dcn'||'DCN'I want to know if folder name is DCN  or dcn . How would I do this ?
Using find command to find folder ignoring case
linux;find
You're looking for the option -iname, which stands for ignore case on GNU find along with the option -type d for selecting only directories.find /mnt/md0/ -type d -maxdepth 1 -iname dcnFor more a detail explanation on find switches you consult explainshells.com's explanation of find. (This will match any case: dcn , DcN, DCn)Edit 1:As state in comment by Olivier Dulac to use with non GNU find or old find version you could use :  find /mnt/md0 -type d -maxdepth 1 -print | grep -i '/dcn$'see this answer to have a real compatibility with non GNU and old find version