[SOLVED} Script that deletes a certain type of lines from a text file

geo909 · 2014-09-26 23:34:08

Hi all,

I have a favour to ask.. I need the following to make my life easier when I enter a gazillion of grades
for tutorials and tests of my students.

I need a script that deletes every line from a text file, if both of these hold:
1) The line does not end with a dash ( - )
2) The line is not the first one.

Then I need a second script that deletes every line that ends with a dash.

I'll be honest with you, I haven't tried to find out how to do it.. At this point my priority is to submit those grades faster, not to learn sed,
so I'm asking it as a favour, in case anybody has a couple of one-liners on the top of their heads.

Thank you in advance.

Last edited by geo909 (2014-09-27 00:08:40)

nomorewindows · 2014-09-26 23:40:02

geo909 wrote:

2) The life is not the first one.

Dag nab it, I could've have fun with that one.

geo909 wrote:

in case anybody has a couple of one-liners on the top of their heads.

We can always come up with one-liners.

So what a sed/awk sort of thing?

lolilolicon · 2014-09-26 23:40:16

sed '1b; /-$/!d' file

sed '/-$/d' file

geo909 · 2014-09-26 23:58:12

nomorewindows wrote:

geo909 wrote:
2) The life is not the first one.
Dag nab it, I could've have fun with that one.

Hahaha, yeah, that's a pretty spiritual script I was looking for!

lolilolicon wrote:

sed '1b; /-$/!d' file

sed '/-$/d' file

That's exactly what I needed. Thanks, you saved lots of my time!

Arch Linux

#1 2014-09-26 23:34:08

[SOLVED} Script that deletes a certain type of lines from a text file

#2 2014-09-26 23:40:02

Re: [SOLVED} Script that deletes a certain type of lines from a text file

#3 2014-09-26 23:40:16

Re: [SOLVED} Script that deletes a certain type of lines from a text file

#4 2014-09-26 23:58:12

Re: [SOLVED} Script that deletes a certain type of lines from a text file

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