problem with cut

pixel · 2006-05-18 12:27:43

Let's say we got this string xfce4-clipman-plugin-0.4.1
I want to cut it to output xfce4-clipman-plugin
how i can do that?
cut -d - f1 outputs xfce4
Is there any way to tell cut to cut it at third dash?

Cerebral · 2006-05-18 12:33:08

$ echo "xfce4-clipman-plugin-0.4.1" | cut -d '-' -f"1,2,3" 
xfce4-clipman-plugin

If you specify more than one field, it'll print out more than one.

pixel · 2006-05-18 13:28:42

Cerebral, but here we got another problem
xfce4-0.4.1 with your solution outputs xfce4-0.4.1 instead of just xfce4

I would like to output only the base name of the package regardless of the number of dashes inside it.

iBertus · 2006-05-18 13:32:23

Not elagant, but it works:

pacman -Q | cut -d" " -f1 | cut -d"-" -f1

pixel · 2006-05-18 13:53:02

but is it possible to do that without using pacman, just plain old unix tools... cut, sed, paste

Cerebral · 2006-05-18 14:10:53

ah, using sed, sure:

$ echo "xfce4-clipman-plugin-0.4.1" | sed "s/(.*)-.*/1/g"
xfce4-clipman-plugin

pixel · 2006-05-18 14:57:34

Cerebral wrote:

ah, using sed, sure:

$ echo "xfce4-clipman-plugin-0.4.1" | sed "s/(.*)-.*/1/g"
xfce4-clipman-plugin

Cerebral, thanks sed is great
any chance to do the same only with 'cut'?

stonecrest · 2006-05-18 16:05:04

Pretty sure it's not possible just with cut.

iBertus · 2006-05-18 16:45:43

pixel wrote:

but is it possible to do that without using pacman, just plain old unix tools... cut, sed, paste

You don't need pacman, it was just an example to make sure it works.

You could always:

echo "xfce4-some-package 0.4.1" | cut -d" "  -f1 | cut -d"-" -f1

phrakture · 2006-05-18 16:57:53

stonecrest wrote:

Pretty sure it's not possible just with cut.

Sure it is, check out what iBertus posted:

echo "xfce4-some-package 0.4.1" | cut -d" "  -f1 | cut -d"-" -f1

you can also:

echo "xfce4-some-package 0.4.1" | tr ' ' '-' | cut -d'-' -f1

Cerebral · 2006-05-18 17:16:23

phrakture wrote:

you can also:

echo "xfce4-some-package 0.4.1" | tr ' ' '-' | cut -d'-' -f1

That does _not_ work:

$ echo "xfce4-some-package 0.4.1" | tr ' ' '-' | cut -d'-' -f1
xfce4

It only prints the first field.

phrakture · 2006-05-18 17:33:28

Ahhh, i thought he wanted just the first word...

I'd use sed... though, you may want to take $pkgrel into account:

echo "xfce4-clipman-plugin-0.4.1-1" | sed "s|(.*)-.*-.*|1|g"

ibrahim · 2006-05-19 12:18:32

pixel wrote:

Let's say we got this string xfce4-clipman-plugin-0.4.1
I want to cut it to output xfce4-clipman-plugin
how i can do that?
cut -d - f1 outputs xfce4
Is there any way to tell cut to cut it at third dash?

echo foo-ooo-bar-345 | cut -d '-' -f 1-3

will give you

foo-ooo-bar

Is that what you want?

T-Dawg · 2006-05-19 19:00:21

ibrahim wrote:

pixel wrote:
Let's say we got this string xfce4-clipman-plugin-0.4.1
I want to cut it to output xfce4-clipman-plugin
how i can do that?
cut -d - f1 outputs xfce4
Is there any way to tell cut to cut it at third dash?
echo foo-ooo-bar-345 | cut -d '-' -f 1-3
will give you
foo-ooo-bar
Is that what you want?

That wont work for all packages. You are splitting at the `-' and printing only the first to third instances of it and not all package names will have three hyphens.
Phrakture's solution is the best. Its saying take the whole field, not anything and anything with -* and -* (pkgver, pkgrel) and print the first field which was the 'not anything' field, or pkgname.

bogomipz · 2006-07-09 00:53:18

It always irritated me that you cannot tell cut to count from the end; "give me the second last field" or "give me all fields up to the third last". It should have had that feature.

T-Dawg · 2006-07-09 01:07:53

bogomipz wrote:

It always irritated me that you cannot tell cut to count from the end; "give me the second last field" or "give me all fields up to the third last". It should have had that feature.

python -c "print 'one two three four'.split(' ')[-2]"

python -c "print 'one two three four'.split(' ')[:-3]"

bogomipz · 2006-07-09 01:36:43

Yes, I'm aware that scripting languages usually have that kind of indexing/slicing - cut most definitely should have had it - this is all it does dammit, why doesn't it do it properly?

SleepyDog · 2006-07-10 17:06:27

echo 'one two three four' | awk '{print $(NF-2),$(NF-1),$NF}'

test1000 · 2006-07-10 20:00:06

what? this is a contest or something

Arch Linux

#1 2006-05-18 12:27:43

problem with cut

#2 2006-05-18 12:33:08

Re: problem with cut

#3 2006-05-18 13:28:42

Re: problem with cut

#4 2006-05-18 13:32:23

Re: problem with cut

#5 2006-05-18 13:53:02

Re: problem with cut

#6 2006-05-18 14:10:53

Re: problem with cut

#7 2006-05-18 14:57:34

Re: problem with cut

#8 2006-05-18 16:05:04

Re: problem with cut

#9 2006-05-18 16:45:43

Re: problem with cut

#10 2006-05-18 16:57:53

Re: problem with cut

#11 2006-05-18 17:16:23

Re: problem with cut

#12 2006-05-18 17:33:28

Re: problem with cut

#13 2006-05-19 12:18:32

Re: problem with cut

#14 2006-05-19 19:00:21

Re: problem with cut

#15 2006-07-09 00:53:18

Re: problem with cut

#16 2006-07-09 01:07:53

Re: problem with cut

#17 2006-07-09 01:36:43

Re: problem with cut

#18 2006-07-10 17:06:27

Re: problem with cut

#19 2006-07-10 20:00:06

Re: problem with cut

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