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@ -4,66 +4,33 @@
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# Demonstrating string manipulation
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# String concatenation
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str1="Hello"
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str2="World"
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concat="$str1 $str2"
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echo "Concatenated string: $concat"
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first_name=John
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last_name=Doe
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full_name=$first_name $last_name
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echo Full name: $full_name
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# String length
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echo "Length of '$concat': ${#concat}"
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string="Hello, World!"
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echo "The string '$string' has ${#string} characters."
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# Substring extraction
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echo "Substring (index 0-4): ${concat:0:5}"
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echo "Substring (from index 6): ${concat:6}"
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echo "The first 5 characters are: ${string:0:5}"
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# String replacement
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sentence="The quick brown fox jumps over the lazy dog"
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echo "Original sentence: $sentence"
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replaced=${sentence/fox/cat}
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echo "After replacing 'fox' with 'cat': $replaced"
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new_sentence=${sentence/fox/cat}
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echo "Modified sentence: $new_sentence"
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# Replace all occurrences
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many_the="the the the dog the cat the mouse"
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replaced_all=${many_the//the/a}
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echo "Replace all 'the' with 'a': $replaced_all"
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# Converting to uppercase and lowercase
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echo "Uppercase: ${string^^}"
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echo "Lowercase: ${string,,}"
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# String to uppercase
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uppercase=${sentence^^}
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echo "Uppercase: $uppercase"
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# String to lowercase
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lowercase=${sentence,,}
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echo "Lowercase: $lowercase"
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# Check if string contains substring
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if [[ $sentence == *"fox"* ]]; then
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echo "The sentence contains 'fox'"
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else
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echo "The sentence does not contain 'fox'"
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fi
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# Split string into array
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IFS=' ' read -ra words <<< "$sentence"
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echo "Words in the sentence:"
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for word in "${words[@]}"; do
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echo " $word"
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done
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# Join array elements into string
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joined=$(IFS=", "; echo "${words[*]}")
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echo "Joined words: $joined"
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# Trim whitespace
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whitespace_string=" trim me "
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trimmed_string=$(echo $whitespace_string | xargs)
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echo "Original string: '$whitespace_string'"
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# Trimming whitespace
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padded_string=" trim me "
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echo "Original string: '$padded_string'"
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trimmed_string=${padded_string## }
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trimmed_string=${trimmed_string%% }
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echo "Trimmed string: '$trimmed_string'"
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# String comparison
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str_a="apple"
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str_b="banana"
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if [[ $str_a < $str_b ]]; then
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echo "$str_a comes before $str_b alphabetically"
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else
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echo "$str_b comes before $str_a alphabetically"
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fi
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echo "String manipulation operations completed."
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