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Removing unwanted symbols with sed

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# 1  
Old 02-09-2019
Removing unwanted symbols with sed
I would like produce

Code:
blue, green, red, yellow

from
Code:
"blue:,*green:,*red:,*yellow

I can remove the colon with
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/://g'

which gives
Code:
blue,*green,*red,*yellow

but when I try
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/://g'; 's/*//g'

I get
Code:
bash: s/*//g: No such file or directory

distro Ubuntu 18.04.1 LTS; desktop Xfce 4.12.3 (Gtk 2.24.31); kernel 4.15.0-45-generic i686 Bash version 4.4.19(1)-release; Dell Inspiron-518
# 2  
Old 02-09-2019
Remove the single quotes in the middle:
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/://g; s/*//g'

or
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/[:*]//g'



--
The single quotes turned it into two commands:
One was:
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/://g'

and the other was:
Code:
's/*//g'

This User Gave Thanks to Scrutinizer For This Post:
Xubuntu56
# 3  
Old 02-09-2019
How about (untested as I'm not at my home computer):


Code:
sed 's/^[^[:lower:]]*\|[^[:lower:]]*$//g; s/[^[:lower:]]*/, /g' file

or
Code:
sed 's/^[^[:lower:]]*\|[^[:lower:]]*$//g; s/[^[:lower:]]+/, /g' file

(possible the + needs to be escaped; can't test...)
This User Gave Thanks to RudiC For This Post:
Xubuntu56
# 4  
Old 02-09-2019
Gentlemen, thank you!
@Scrutinizer--your suggestions worked very well; I just need to figure out how to put spaces after the commas.
@RudiC--your second suggestion worked perfectly after escaping the "+". The first code produced a very interesting result!
Code:
, b, l, u, e, g, r, e, e, n, r, e, d, y, e, l, l, o, w,

# 5  
Old 02-09-2019
Quote:
Originally Posted by Xubuntu56
Gentlemen, thank you!
@Scrutinizer--your suggestions worked very well; I just need to figure out how to put spaces after the commas.
[..]
In this case:
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/://g; s/*/ /g'

or use:
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/[:*]//g; s/,/, /g'



--
Note: \+ and \| are GNU extensions that will not work with regular sed
In regular sed, the equivalent would be something like:
Code:
sed 's/^[^[:lower:]]*//g; s/[^[:lower:]]*$//g; s/[^[:lower:]]\{1,\}/, /g'

Last edited by Scrutinizer; 02-09-2019 at 09:22 PM..
These 2 Users Gave Thanks to Scrutinizer For This Post:
RudiC Xubuntu56
# 6  
Old 02-09-2019
@Scrutinizer--both perfect, thanks!
# 7  
Old 02-10-2019
Maybe I did not understand again. I reread discussion several times Smilie
Code:
echo "blue:,*green:,*red:,*yellow" | sed 's/:,\*/, /g'

--- Post updated at 14:35 ---

If this string in a function or in a script, example as first parameter
Code:
echo ${1//:,\*/, }

These 2 Users Gave Thanks to nezabudka For This Post:
RudiC Xubuntu56
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