This is an extension of tee, a tool that performs replacements by regular expressions while writing text.
For example, if you save text containing colour codes with tee, the escape sequence will be included in the file.
total 44
drwxr-xr-x 2 root root 4096 Apr 24 2018 ESC[0mESC[01;34mbackupsESC[0m
drwxr-xr-x 10 root root 4096 Oct 2 2022 ESC[01;34mcacheESC[0m
drwxrwxrwt 2 root root 4096 Aug 22 2020 ESC[30;42mcrashESC[0m
:
Therefore, a separate operation to remove the escape sequence is required after the tee command, e.g. by using the sed command.
rrtee can apply a substitution to files directly without such post-processing.
command | rrtee [-c config file path] <output file path>
ls -l --color=always /var | ./rrtee -c config.toml /tmp/aaa
Console shows the following:
On the other hand, /tmp/aaa
has no escape sequences:
total 44
drwxr-xr-x 2 root root 4096 Apr 24 2018 backups
drwxr-xr-x 10 root root 4096 Oct 2 2022 cache
drwxrwxrwt 2 root root 4096 Aug 22 2020 crash
drwxr-xr-x 38 root root 4096 Nov 23 2022 lib
drwxrwsr-x 2 root staff 4096 Apr 24 2018 local
lrwxrwxrwx 1 root root 9 Aug 22 2020 lock -> /run/lock
drwxrwxr-x 8 root syslog 4096 Oct 2 2022 log
drwxrwsr-x 2 root mail 4096 Aug 22 2020 mail
drwxr-xr-x 2 root root 4096 Aug 22 2020 opt
lrwxrwxrwx 1 root root 4 Aug 22 2020 run -> /run
drwxr-xr-x 2 root root 4096 Jul 10 2020 snap
drwxr-xr-x 4 root root 4096 Aug 22 2020 spool
drwxrwxrwt 2 root root 4096 Jul 2 22:43 tmp
You can add/delete a rule using rules.
prefix.