How can i remove a line from an ordinary text file?

It is easy to remove a line from a file by rewriting the file. how can i remove a line without rewriting ? Also, do not use whitespaces to overwrite the line. I expect a perfect line deletion code .....

gimbal2 wrote:
hsc71 wrote:
It's the way you communicate. Try to be carefull with the words you use in your post. It's easy to insult people just by choosing the wrong words. Bold text and capitals is equal to shouting.
shock. You said "wrong words". I am seriously offended by that!
Seriously, would you care that I am offended? I really hope not... Say what you want, people will find reasons to take offense one way or the other.Hehe, maybe you're right, but the OP still has no answer.............and in the end that's what he/she is looking for.

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Otherwise, write the line to output, and go get the
next line.
Close both files.

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<Serial Number Edited By Host>

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Dr mizooo_1985 wrote:
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Using FaceTime http://support.apple.com/kb/ht4319http://support.apple.com/kb/ht4319
Troubleshooting FaceTime http://support.apple.com/kb/TS3367http://support.apple.com/kb/TS3367
The Complete Guide to FaceTime + iMessage: Setup, Use, and Troubleshooting
http://tinyurl.com/a7odey8http://tinyurl.com/a7odey8
Troubleshooting FaceTime and iMessage activation
http://support.apple.com/kb/TS4268http://support.apple.com/kb/TS4268
iOS: FaceTime is 'Unable to verify email because it is in use'
http://support.apple.com/kb/TS3510http://support.apple.com/kb/TS3510
Using FaceTime and iMessage behind a firewall
http://support.apple.com/kb/HT4245http://support.apple.com/kb/HT4245
iOS: About Messages
http://support.apple.com/kb/HT3529http://support.apple.com/kb/HT3529
Set up iMessage
http://www.apple.com/ca/ios/messages/http://www.apple.com/ca/ios/messages/
iOS and OS X: Link your phone number and Apple ID for use with FaceTime and iMessage
http://support.apple.com/kb/HT5538http://support.apple.com/kb/HT5538
How to Set Up & Use iMessage on iPhone, iPad, & iPod touch with iOS
http://osxdaily.com/2011/10/18/set-up-imessage-on-iphone-ipad-ipod-touch-with-io s-5/http://osxdaily.com/2011/10/18/set-up-imessage-on-iphone-ipad-ipod-touch-with-io s-5/
Set Up Alert Sounds
http://www.quepublishing.com/articles/article.aspx?p=1873027&seqNum=3http://www.quepublishing.com/articles/article.aspx?p=1873027&seqNum=3
Extra FaceTime IDs
http://tinyurl.com/k683gr4http://tinyurl.com/k683gr4
Troubleshooting Messages
http://support.apple.com/kb/TS2755http://support.apple.com/kb/TS2755
Troubleshooting iMessage Issues: Some Useful Tips You Should Try
http://www.igeeksblog.com/troubleshooting-imessage-issues/http://www.igeeksblog.com/troubleshooting-imessage-issues/
Setting Up Multiple iOS Devices for iMessage and Facetime
http://macmost.com/setting-up-multiple-ios-devices-for-messages-and-facetime.htmhttp://macmost.com/setting-up-multiple-ios-devices-for-messages-and-facetime.htm l
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http://www.ilounge.com/index.php/articles/comments/facetime-and-imessage-not-acc epting-apple-id-password/http://www.ilounge.com/index.php/articles/comments/facetime-and-imessage-not-acc epting-apple-id-password/
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http://ipadtutr.com/fix-login-facetime-imessage-ios-7/http://ipadtutr.com/fix-login-facetime-imessage-ios-7/
FaceTime, Game Center, Messages: Troubleshooting sign in issues
http://support.apple.com/kb/TS3970http://support.apple.com/kb/TS3970
Unable to use FaceTime and iMessage with my apple ID
https://discussions.apple.com/thread/4649373?tstart=90https://discussions.apple.com/thread/4649373?tstart=90
How to Block Someone on FaceTime
http://www.ehow.com/how_10033185_block-someone-facetime.htmlhttp://www.ehow.com/how_10033185_block-someone-facetime.html
My Facetime Doesn't Ring
https://discussions.apple.com/message/19087457#19087457https://discussions.apple.com/message/19087457#19087457
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http://www.imore.com/daily-tip-ios-5-airplay-mirroring-facetimehttp://www.imore.com/daily-tip-ios-5-airplay-mirroring-facetime
Send an iMessage as a Text Message Instead with a Quick Tap & Hold
http://osxdaily.com/2012/11/18/send-imessage-as-text-message/http://osxdaily.com/2012/11/18/send-imessage-as-text-message/
To send messages to non-Apple devices, check out the TextFree app https://itunes.apple.com/us/app/text-free-textfree-sms-real/id399355755?mt=8https://itunes.apple.com/us/app/text-free-textfree-sms-real/id399355755?mt=8
How to Send SMS from iPad
http://www.iskysoft.com/apple-ipad/send-sms-from-ipad.htmlhttp://www.iskysoft.com/apple-ipad/send-sms-from-ipad.html
How to Receive SMS Messages on an iPad
http://yourbusiness.azcentral.com/receive-sms-messages-ipad-16776.htmlhttp://yourbusiness.azcentral.com/receive-sms-messages-ipad-16776.html
You can check the status of the FaceTime/iMessage servers at this link.
http://www.apple.com/support/systemstatus/http://www.apple.com/support/systemstatus/
 Cheers, Tom

How can i remove a line from an ordinary text file?

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