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$ echo Hello There | tr [:lower:] [:upper:] HELLO THERE
#!/bin/bash echo -n "Enter department name: " read dept echo $dept | tr [:lower:] [:upper:] >> depts
echo $dept | tr [:upper:] [:lower:] >> depts
echo $dept | tr a-z A-Z >> depts
echo $dept | awk '{print toupper($0)}' >> depts
echo $dept | awk '{print tolower($0)}' >> depts
echo $dept | sed 's/[a-z]/\U&/g' >> depts
echo $dept | sed 's/[A-Z]/\L&/g' >> depts
$ awk '{print tolower($0)}' depts finance billing bookkeeping
$ awk '{print tolower($0)}' depts > depts- $ mv depts- depts
$ sed 's/[A-Z]/\L&/g' depts
$ echo design \& engineering| sed -e "s/\b\(.\)/\u\1/g" Design & Engineering
$ echo design \& ENGINEERING | sed 's/\b\([[:alpha:]]\)\([[:alpha:]]*\)\b/\u\1\L\2/g' Design & Engineering
$ echo -n "design & engineering" | python3 -c "import sys; print(sys.stdin.read.title)" Design & Engineering
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