stderr in color

mycommand 2> >(while read line; do echo -e "\e[01;31m$line\e[0m"; done)
in case you run some command in CLI and would like to take read strerr little bit better, you can use the following command. It's also possible to grep it if necessary....

By: confiq
2010-12-30 21:42:42

What Others Think

Can this be applied to the shell as well so that you set it once and it works for all subsequent commands?
stbu · 599 weeks ago
This can be made into a function like so: function red_error { "$@" 2> >(while read line; do echo -e "\e[01;31m$line\e[0m"; done) } Then for example: red_error tar tvf some_file.tgz
dstahlke · 598 weeks and 2 days ago
Enter the function and the following into your .bashrc. bind 'RETURN: "\e[1~error \e[4~\n"' See for more info
capncanuck · 598 weeks and 2 days ago
replace 'error' with the name of the function, in 'dstahlke''s case 'red_error'
capncanuck · 598 weeks and 2 days ago
Hmm, it seems to interfere with 'read'
capncanuck · 598 weeks and 2 days ago
It won't die when you hit Ctrl-C. You have to kill a bash process which is a child of the command being run...
dstahlke · 597 weeks and 2 days ago
Another odd option: exec 3> >(while read line; do echo -e "\e[01;31m$line\e[0m"; done) some_command 2>&3 stderr from some_command will be displayed in red. This opens file handle #3 and pipes it to the subshell until that file handle is closed with exec 3>&-
mweed · 590 weeks and 1 day ago
Note that doing: exec 2> >(while read line; do echo -e "\e[01;31m$line\e[0m"; done) Will make the shell do exectly what is wanted. all stderr displays in red and stdout displays normally for the shell and commands executed in the shell. Unfortunately is also has the effect of not displaying the prompt and any input until input is completed. Anyone know how to get around this?
mweed · 590 weeks and 1 day ago
Faster to color with command: grep --color=auto '.*'
mjb · 554 weeks ago
scream, or enjoy the cicadas flap its wings when you bring the cool wind; when passing Hasuike also puffed breath goods products that Lotus aroma; hours because ignorance has been poked hornet's nest and stung his face was bruised. Dig once, because "small insects" (Sparrow) and took out a "snake" (Snake) scared to fall from the wall. Fortunately, nothing serious. Leisure time, will collect some cigarette paper folded triangle, and partners to play; (the triangle on the ground and put his hand on the ground quick photo shoot the other side of the triangle is the triangle that turned their a); and also than own older brother and sister were led to a wide flat on the grass or doing "of chicken" or "kill the lamb" of the game, before the election when one eagle, then tall in front when hens , when the rest of the chicken, the eagle chasing shot at the back of the chick, hen with open arms to protect chickens, smart dodge to keep eagle patting. Or a dozen people sitting in a circle, do a do Diushou Juan game: the hands of only one person to take the handkerchief out of his mouth in a circle singing Diushou Juan songs, danced around the circle turning quietly throw the handkerchief in the back of a person. Then run around in circles. If you have a lap behind the handkerchief patting, this people have not found the person you want to give a performance for everyone; a joke, sing songs, or back poem. Then began Diushou Juan by him or her. If this is discovered immediately took the handkerchief catch Diushou Juan people, that Diushou Juan will continue to lose, someone who can back into place; catch, and throw this man who has sat on the bit when this man will be punished performances. We will play along with a dozen "Stars over the month child" or "cat drilled 72 holes" game. (Read the article Network: I remember one summer, that the acquisition of medicinal city recovered cicada skin (medical term called cicada), catty two five. So every day, together with my brothers holding bamboo, Dianzhe plastic bags, and from the village in the woods to find a tree cicada skin, after the end of the summer, we harvest relatively big, full harvest four pounds, to buy ten dollars. The next summer we look for a summer, more than the first year looking for even more, I did not expect there to happily after being told not recovered. Cicada got hard skin, back at home after shuffling, and
zyf543 · 324 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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