01-02-2002
Another 'VI' question
I want to know how I can strip and add blanklines from/to a text file with VI.
I have two scenarios that I am currently doing manually - and it's painful.
1) I need to strip any lines that have no characters on them at all..... (:set list shows me $)
and
2) I need to enter a blank line on every second line of a text file
I've tried the ole
:1,$ s/`\n`//g
and many other combinations - but without joy.... and I'm foreign to sed/awk. (although if theres a way I'd be happy to hear it).
Cheers
10 More Discussions You Might Find Interesting
1. Programming
I need to compile a file,but 'make' does
not work.please tell me how to use it or
need which tools? (3 Replies)
Discussion started by: dsun5
3 Replies
2. UNIX for Dummies Questions & Answers
my solaris text talks about the 'find' command... it further goes to talk about an "action" used with the find command.
I am completely confused as to what the {} do with the find comand.
the explanation is this: "A set of braces, {}, delimits where the file name is passed to the command from... (2 Replies)
Discussion started by: xyyz
2 Replies
3. Shell Programming and Scripting
I wonder how I shall read the result below, especially 'what'
shown below.
The result was shown when I entered 'w'.
E.g what is TOP? What is gosh ( what does selmgr mean?)?
login@ idle JCPU PCPU what
6:15am 7:04 39 39 TOP
6:34am 6:45 45 45 TOP
6:41am ... (1 Reply)
Discussion started by: Aelgen
1 Replies
4. UNIX for Advanced & Expert Users
Can anybody help me?
I am developing a utility for automating message paging to a BT alphanumeric pager.
I am using a USR 56K Fax-modem connected to /dev/cuab on a Sun Ultra-10. I am using the UNIX 'tip' utility to connect to the modem and I have configured the modem as follows: Baud Rate:... (2 Replies)
Discussion started by: mybeat
2 Replies
5. UNIX for Dummies Questions & Answers
I asked a similar question earlier and got a very good answer but a new doubt came up. This is a few lines of a '/sbin/ifconfig' command on my PC:
RX packets:3781025 errors:0 dropped:0 overruns:0 frame:0
TX packets:1941909 errors:0 dropped:0 overruns:0 carrier:0
Does the RX and TX packets... (1 Reply)
Discussion started by: mint1981
1 Replies
6. UNIX for Dummies Questions & Answers
echo 'it's friday'
why appear the > (3 Replies)
Discussion started by: yls177
3 Replies
7. IP Networking
Hey all,
I've bought a few bits from Belkin who seem quite happy to support FreeBSD! Last time I bought a UPS from them and it's still going well :D
I saw this on their website that the 16bit PCMCIA card was supported under FreeBSD:
http://www.belkin.com/network/F5D5020.html
I went to my... (0 Replies)
Discussion started by: WIntellect
0 Replies
8. Email Antispam Techniques and Email Filtering
Here is a crude procmail recipe that I quickly created (NOT a procmail recipe expert, btw) that has been catching lots of spam (current second after the charset_spam recipe posted earlier):
:0B
* .*If.you.do.not.wish.to.receive...*
more_spam
:0B
* You.requested.to.receive.this.mailing... (0 Replies)
Discussion started by: Neo
0 Replies
9. UNIX for Advanced & Expert Users
Somehow someone created a file named '-ov' in the root directory.
Given the name, the how was probably the result of some cpio command they bozo'ed.
I've tried a number of different ways to get rid of it using * and ? wildcards, '\' escape patterns etc.. They all fail with " illegal option --... (3 Replies)
Discussion started by: GSalisbury
3 Replies
10. Shell Programming and Scripting
Hopefully this doesn't come off as too much of a "newbie" question or a flamebait. But I have recently begun working with a Sun Solaris box after having spent the past five years working with RedHat. From what i can tell, thing look fairly similar and the 'man' command is some help. But I've... (7 Replies)
Discussion started by: deckard
7 Replies
LTRIM(3) 1 LTRIM(3)
ltrim - Strip whitespace (or other characters) from the beginning of a string
SYNOPSIS
string ltrim (string $str, [string $character_mask])
DESCRIPTION
Strip whitespace (or other characters) from the beginning of a string.
PARAMETERS
o $str
- The input string.
o $character_mask
- You can also specify the characters you want to strip, by means of the $character_mask parameter. Simply list all characters
that you want to be stripped. With .. you can specify a range of characters.
RETURN VALUES
This function returns a string with whitespace stripped from the beginning of $str. Without the second parameter, ltrim(3) will strip
these characters:
o " " (ASCII
32 ( 0x20)), an ordinary space.
o " " (ASCII
9 ( 0x09)), a tab.
o "
" (ASCII
10 ( 0x0A)), a new line (line feed).
o "
" (ASCII
13 ( 0x0D)), a carriage return.
o "