Kept getting this error when trying to delete Ctrl+Z (octal 032) from a file:
tr -d \032 file.txt tr: extra operand `file.txt' Only one string may be given when deleting without squeezing repeats. Try `tr --help' for more information.
I keep forgetting that tr is expecting data from a stream not a file so the solution is to redirect the input:
tr -d \032 < file.txt.