Unix Tip: STRING STRIPPING

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2473 - October 9, 2005

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STRING STRIPPING

Remove all ^M and other control characters from file ABC

strings ABC > ABC-good

This tip generously supported by:brillj@constellation.navy.mil

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DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
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Unix Tip: TEXT FILE CASE REVERSAL

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2472 - October 8, 2005

http://www.ugu.com/sui/ugu/show?tip.today

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TEXT FILE CASE REVERSAL

Ever want to reverse the entire case of a text file:

o reverse the case of a text file:
tr 'a-zA-Z' 'A-Za-z' < inputfile

This tip generously supported by: vikram.kalsi@seepz.tcs.co.in

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DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================

Unix Tip: VI MAN PAGES

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2471 - October 7, 2005

http://www.ugu.com/sui/ugu/show?tip.today

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VI MAN PAGES

Try saving a man page to a file for viewing with vi.

You will see a whole bunch of control characters.

How can you save a man page in a form readable by vi?

$ man ls | col -b > readable_file.txt

This tip generously supported by: kmehta@legato.com

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================

Unix Tip: VI LINE NUMBERS

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2470 - October 6, 2005

http://www.ugu.com/sui/ugu/show?tip.today

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VI LINE NUMBERS

Ever want line numbers while editing a file:

:set number

We can see the line numbers...

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================

Unix Tip: GETTING RID OF ^M

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2469 - October 5, 2005

http://www.ugu.com/sui/ugu/show?tip.today

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GETTING RID OF ^M

How to get rid of ^M in text files .

tr -d '^M' <inputfile >outputfile

But how to get this '^M' in the command line:

Keep CTRL pressed and then press v and m

This tip generously supported by: sojan@psidata.com

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================

Unix Tip: REMOVE JUST THE FILES

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2468 - October 4, 2005

http://www.ugu.com/sui/ugu/show?tip.today

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REMOVE JUST THE FILES

To removal only the files (not subdirectories) in the current directory, use the following command:

rm `ls -l | grep -v '^d' | awk '{ print $9 }'`

This tip generously supported by: rrs@assc.com.ve

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================

Unix Tip: SOLARIS CHANGING SEASONS

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2467 - October 3, 2005

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SOLARIS CHANGING SEASONS

During a session, sometimes we have a need to change the system time for our session only. We have used it to simulate time based testing.

export TZ=ESThhEDT

The EST set your time to Eastern Standard Time and EDT is Eastern Daylight Time.

hh is the number of hours you wish to change.

Example: Currently the system
date is Tue Jun 19 13:38:03 EDT 2001

and you wish to set it to yesterday at the same time. You would substitute a positive 29 for hh.

export TZ=EST29EDT

Now the shell time is:
Mon Jun 18 13:38:50 EDT 2001

WHY 29 and not 24? The main UNIX clock is set from GMT not EST therefore you have to add 5 hours to your backward calculations to get the same exact time since EST is GMT - 5 hours.

Use negitive numbers to set the clock into the future.

Also if you need to set the minutes and seconds it is hh:mm:ss. These are all the number of hours, minutes and seconds from GMT that you wish to set.

This is for Solaris 2.6, your mileage may vary.

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================

Unix Tip: TAR ONLY THE FILES

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2466 - October 2, 2005

http://www.ugu.com/sui/ugu/show?tip.today

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TAR ONLY THE FILES

To tar only files (not subdirectories) in the current directory use this command:

$ tar cvf files.tar ./`ls -l | grep -v '^d' | awk '{ print $9 }'`

This tip generously supported by: rrs@assc.com.ve

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================

Unix Tip: SHELL OUTPUT INTO VI

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2465 - October 1, 2005

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SHELL OUTPUT INTO VI

In VI editor you can get the output of any shell command command inserted into the file you are editing by using:

:r!<command>

For example:

:r!who -r

inserts the ouput of the command "who -r" to the file currently being edited.

This can be effectively used to copy the contents of a file to the file currently being edited

ie,

:r!cat /etc/passwd

inserts all the contents of the the /etc/passwd to the file currently being edited.

This tip supported by: Prem Kumar S <sprem@wipro.co.in>

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
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