tr – Pario TechnoBlob

Linux

Create random filenames with random content

I wanted to test filesystem checking on a large XFS filesystem and needed to fill the filesystem. The task was to create files on random with different file size and names placed in different folders. The script I found on the Internet does exactly that #!/bin/bash # Created by Ben Okopnik on Wed Jul 16 […]

Scripting

Delete all newlines from a file

tr -d ‘\n’ < file

Linux

Translate uppercase characters to their corresponding lowercases

cat file| tr ‘A-Z’ ‘a-z’

Linux

Convert everything in the current directory from upper- to lowercase.

A bash script to convert everything from upper- to lowercase. “!/bin/bash for n in *; do mv $n `echo $n | tr ‘[:upper:]’ ‘[:lower:]’`; done

Scripting

Convert DOS Carriage Return file to Unix Line feed file

tr ‘\r’ ‘\n’ < sourcefile_dos.txt > resultfile_unix.txt An alternative is to use the program hd2u which is a DOS < –> Unix convertor dos2unix -U 2006-12.md5 Converts from DOS to Unix, doing a Unix to DOS use the -D switch.