tr

Linux · Text · available in the simulator

What it does

Translate or delete characters.

Syntax

tr [opciones] conjunto1 [conjunto2]

Options and parameters

• -d

  Delete characters in the specified set.

  tr -d '\r' < archivo.txt
• -s

  Replace each sequence of repeated characters with a single occurrence.

  tr -s ' '
• -c

  Use the complement of the specified set.

Usage examples

• echo hola | tr a-z A-Z
• echo 'a b c' | tr -d ' '
• tr -s ' ' < archivo.txt
• tr -d '\r' < archivo
• tr -d '\r' < archivo.txt
• tr -s ' '

Notes and common mistakes

• Only reads from standard input; used with pipes or redirections.
• Typical example: echo hola | tr a-z A-Z

Related commands

• awk
• cat
• cut
• diff
• grep
• head