[SOLVED] spacing

athrin · 03-31-2011, 12:06 AM

hello i want to display
THIS
Hostname : dell
Ip address : 192.168.1.103
CPU Name : Intel(R) Xeon(TM) CPU 2.40GHz

TO

Hostname <space> : dell
Ip address <space> : 192.168.1.103
CPU Name <space> :Intel(R) Xeon(TM) CPU 2.40GHz

made the : to one line using bash
please help me

EricTRA · 03-31-2011, 01:47 AM

Quote:

Originally Posted by athrin

made the : to one line using bash

Hello,

What do you mean by this? Have a look at the man page for sed:

Code:

man sed

or this great tutorial of sed online.

Kind regards,

Eric

rrije · 03-31-2011, 10:12 AM

You probably want to line up the second column straight, right?

Try sed s/':'/':\t'/g
'\t' will insert tabulation (equal to several spaces).

So, for example, if you have a file "input" with the text you want to transform, you do something like this:

Code:

cat input | sed s/':'/':\t\t'/g > output

The resulting file "output" will have the processed text.

athrin · 03-31-2011, 11:20 PM

Quote:

Originally Posted by rrije

You probably want to line up the second column straight, right?

Try sed s/':'/':\t'/g
'\t' will insert tabulation (equal to several spaces).

So, for example, if you have a file "input" with the text you want to transform, you do something like this:

Code:

cat input | sed s/':'/':\t\t'/g > output

The resulting file "output" will have the processed text.

oh... thanks..

kurumi · 03-31-2011, 11:30 PM

Quote:

Originally Posted by rrije

Code:

cat input | sed s/':'/':\t\t'/g > output

The resulting file "output" will have the processed text.

why the cat and the extra single quotes?

Code:

sed 's/:/:\t\t/' input

paulsm4 · 03-31-2011, 11:37 PM

Quote:

Q: why the cat and the extra single quotes?

Because it's arguably clearer

kurumi · 04-01-2011, 12:44 AM

Quote:

Originally Posted by paulsm4

Because it's arguably clearer

how is that clearer and simpler than passing the file as input and reducing extra shell processes?? Besides, the main purpose of cat is to concat files, not really to view.

athrin · 04-01-2011, 02:29 AM

Quote:

Originally Posted by rrije

You probably want to line up the second column straight, right?

Try sed s/':'/':\t'/g
'\t' will insert tabulation (equal to several spaces).

So, for example, if you have a file "input" with the text you want to transform, you do something like this:

Code:

cat input | sed s/':'/':\t\t'/g > output

The resulting file "output" will have the processed text.

wait2.. how to use this again??
im using "\ \ " to space.. but if you have other command tell me

athrin · 04-01-2011, 02:35 AM

example i use this command for spacing

OS=`cat /etc/*release`
echo "OS Used" \ \ \ \ \ \ \ \ \ \ \ \ \ " : $OS"

but the command doesnt look nice if i use this.
so how to change the \ \ to other command using your

cat input | sed s/':'/':\t\t'/g > output

paulsm4 · 04-01-2011, 11:25 AM

Hi, Athrin -

As an example, this command adds six spaces:

Code:

OS=`cat /etc/*release`
echo "OS Used:      $OS"

'Hope that helps

athrin · 04-02-2011, 08:16 PM

Quote:

Originally Posted by paulsm4

Hi, Athrin -

As an example, this command adds six spaces:

Code:

OS=`cat /etc/*release`
echo "OS Used:      $OS"

'Hope that helps

nope.. its not helping.. now i'm using

Code:

OS=`cat /etc/*release`
echo "OS Used"'      '" :$OS"

i think this is enough

rrije · 04-04-2011, 08:08 AM

Quote:

Originally Posted by kurumi

why the cat and the extra single quotes?

I'm not much of a scriptwriter (neither have a solid knowledge on how to use bash properly), so thanks for pointing that out. Guess I'm just not really sure about the outcome of this and that, and code redundancy gives an illusion of simplicity.

Anyway, athrin, I don't understand why you insist on using spaces instead of tabs, because tabs (as far as I know) have a nice property of lining things straight, so it doesn't matter if the text before the tabs is a bit shorter or longer.

echo -e "OS Used"\t\t":$OS" looks simpler to me (-e option enables interpretation of backslash escape sequences).

athrin · 04-06-2011, 11:24 PM

Quote:

Originally Posted by rrije

I'm not much of a scriptwriter (neither have a solid knowledge on how to use bash properly), so thanks for pointing that out. Guess I'm just not really sure about the outcome of this and that, and code redundancy gives an illusion of simplicity.

Anyway, athrin, I don't understand why you insist on using spaces instead of tabs, because tabs (as far as I know) have a nice property of lining things straight, so it doesn't matter if the text before the tabs is a bit shorter or longer.

echo -e "OS Used"\t\t":$OS" looks simpler to me (-e option enables interpretation of backslash escape sequences).

oh thanks