>Usage
tr (Translate) is a Unix command-line tool used for translating, deleting, and squeezing characters from standard input. It's great for quick text transformations, such as converting lowercase to uppercase or removing unwanted characters.
>Synopsis
>Options
-d
-d (delete characters): Deletes the specified characters from the input.
Example 1:
-zsh
> echo "Hello World" | tr -d "o"
Hell Wrld
-s
-s (squeeze repeated characters): Replaces sequences of repeated characters with a single instance.
Example 2:
-zsh
> echo "Hellooo World" | tr -s "o "
Hello World
-c
-c (complement): Matches and operates on all characters except the specified set.
Example 3:
-zsh
> echo "123abc" | tr -c "a-z" "*"
***abc*%
[:upper:] and [:lower:]
[:upper:] and [:lower:] (case conversion): Converts all uppercase letters to lowercase, or vice versa.
Example 4:
-zsh
> echo "Hello World" | tr '[:lower:]' '[:upper:]'
HELLO WORLD
-t
-t (truncate set1): Truncates the first set to the length of the second set.
Example 5:
-zsh
> echo "abcdef" | tr -t "abc" "XYZ"
XYZdef
Character Ranges
Character Ranges (e.g., a-z, 0-9): Specifies a range of characters to translate.
Example 6:
-zsh
> echo "abcdef" | tr "a-f" "1-6"
123456
-D
-D (delete non-matching characters): Specifies a range of characters to translate.
Example 7:
-zsh
> echo "Unix123" | tr -D "a-zA-Z"
Unix
Translating Tabs to Spaces
Translating Tabs to Spaces: Replaces tabs with spaces for formatting text.
Example 8:
-zsh
> echo -e "Column1\tColumn2" | tr "\t" " "
Column1 Column2