macOS deleting line using sed

[rita1985]

LOGFILE=/tmp/rc.net.out # LOGFILE is where all stdout goes.

What sed command should i use in order to only display LOGFILE=/tmp/rc.net.out

I try using this sed "/#/d" tmp1.txt > tmp2.txt but it delete the whole line away

 

[Baron58]

LOGFILE=/tmp/rc.net.out # LOGFILE is where all stdout goes.

What sed command should i use in order to only display LOGFILE=/tmp/rc.net.out

I try using this sed "/#/d" tmp1.txt > tmp2.txt but it delete the whole line away

sed s/' #'.*$//g tmp1.txt > tmp2.txt

Substitute literal SPACE#anycharacter zero or more times until end of line with "nothing", globally.

I would tend to do: cat tmp1.txt | sed s/' #'.*$//g > tmp2.txt
...but whatever.

 

[rita1985]

deleting line using sed

i having this error --- > sed: garbled command s/

How can i solve it?

 

[fimac]

cut is great for simple cases

What sed command should i use...

Your options include sed, awk, and cut (which I think is simplest in this case).

cat tmp | sed -e 's: *#.*$::g'
cat tmp | awk -F# '{print $1}'
cat tmp | cut -d# -f1

Perl can also be used, but I leave that as an exercise for the reader

 

[Baron58]

i having this error --- > sed: garbled command s/

How can i solve it?

Did you make a typo, or did you copy/paste what I wrote? What *nix are you using it on?

 

[fimac]

cat tmp1.txt | sed s/' #'.*$//g > tmp2.txt

The space needs to be a tab, if copy+paste is expected to work. Just FYI [Using bash on 10.5.2]

Generally, I recommend quoting the whole of the sed expression; this means the shell does not "get in our way" -- and so it is easier to debug.

 

[rita1985]

deleting line using sed

i am using MS-Dos batch file.

 

[rita1985]

deleting lines using sed

i have found the solution.

sed "s/# LOGFILE.*goes./ /g" tmp0.txt > tmp1.txt

This command delete all the words that is in between #LOGFILE and goes.

cheers (^-^)