CODEWITHSUNDEEP
bashsedcolors
bc81
bc81

Reputation: 187

How do i remove tput color from log file

I have a bash script which I have made the output pretty with colors and stuff, however my log file looks horrible.

If it can be modified before it is piped to the log file that would be preferable but if that is not possible i would like to at least run a clean-up function that could be run at the end of my script which would clean the log file of the ugliness.

I have tried things like sed -r -i "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g" install.log but that did not seem to clean up

Below are the color variables used
BOLD=$(tput bold); RED=$(tput setaf 1); WHITE=$(tput setaf 7); BGBLUE=$(tput setab 4); BGRED=$(tput setab 1); RCol=$(tput sgr0); InCol=$(tput rev); UndLn=$(tput smul) BWhiOn_Red=$BOLD$WHITE$BGRED; BWhiOn_Blu=$BOLD$WHITE$BGBLUE; BRed=$BOLD$RED;

Here is an code snippet
printf "%s\n" "${BRed}MISSION ABORTED! Abandon Ship!!${RCol}" | tee -a install.log

And this is what it looks like when I vi the log file
^[[1m^[[31mMISSION ABORTED! Abandon Ship!!^[(B^[[m

When using sed -r -i "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g" install.log the log file shows this
MISSION ABORTED! Abandon Ship!!^[(B

It seems like the regex doesn't cover tput sgr0 but i am not sure how to fix it

Upvotes: 1

Views: 689

Answers (2)

Diego Torres Milano
Diego Torres Milano

Reputation: 69198

To avoid the problem

if [ -t 1 ]
then
    BOLD=$(tput bold);
    RED=$(tput setaf 1)
    ...
fi

and the values won't be set if you redirecting to a file

Upvotes: 1

Jack
Jack

Reputation: 6158

This worked for me:

sed -i -e 's/\x1B[^m]*m//g' install.log

To break down the sed command, the \x1B is the escape character that starts a control sequence: Ctrl-[ . A control sequence ends with an m, so we find every character that is NOT an m, and the m that follows: [^m]*m.

Upvotes: 1

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