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Dante777

Member

Registered: 2016-07-12

Posts: 38

Website

[SOLVED] Use of 'sed' in makepkg.conf [SOLVED]

So, i'm using sed in a bash/zsh script, to remove the default, and paste the following line in /etc/makepkg.conf :

[Line 41]     

CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions \

I remove the default line:

$ sudo sed -i '41d' /etc/makepkg.conf

but when i try to set my edited line:

$ sudo sed -i '40 a CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions \' /etc/makepkg.conf

i always end up with:

CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions

      (without the last symbol)

\

Any ideas?
Excuse my ignorance, my profession has nothing to do with computers..
Thank you in advance.

Last edited by Dante777 (2021-08-28 19:57:47)

Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,500

Website

Re: [SOLVED] Use of 'sed' in makepkg.conf [SOLVED]

sed -i '40 a CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions \\' /etc/makepkg.conf

But you probably shouldn't be using line numbers for this - and you definitely don't need to call sed twice:

sed -i 's/^CFLAGS.*/CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions \\/' /etc/makepkg.conf

And in fact, if all you are changing is -march and -mtune, just do that:

sed -i 's/-march=[^ ]* -mtune=[^ ]*/-march=native/' /etc/makepkg.conf

Last edited by Trilby (2021-08-28 19:31:47)

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"UNIX is simple and coherent" - Dennis Ritchie; "GNU's Not Unix" - Richard Stallman

Dante777

Member

Registered: 2016-07-12

Posts: 38

Website

Re: [SOLVED] Use of 'sed' in makepkg.conf [SOLVED]

sed -i '40 a CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions \\' /etc/makepkg.conf

But you probably shouldn't be using line numbers for this - and you definitely don't need to call sed twice:

sed -i 's/^CFLAGS.*/CFLAGS="-march=native -O2 -pipe -fno-plt -fexceptions \\/' /etc/makepkg.conf

And in fact, if all you are changing is -march and -mtune, just do that:

sed -i 's/-march=[^ ]* -mtune=[^ ]*/-march=native/' /etc/makepkg.conf

Thank you so much !
I'll try it right away.

Edit: works like a charm! Again, Thank You !

Last edited by Dante777 (2021-08-28 19:57:07)