=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
UNIX GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3521 - September 30, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
RENAME A LARGE NUMBER OF FILES
This a an oldie but a goodie. There always comes a
time when a large number of files need to be renamed.
Here is one quick way to do it:
=================== cut here ===========================
#!/bin/sh
for i in *
do
echo $i
mv $i `basename $i`.bak
done
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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
==========================================================================
Selasa, 30 September 2014
Senin, 29 September 2014
Unix Tip: NULL ROOT PASSWD WITHOUT VI
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
UNIX GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3520 - September 29, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
NULL ROOT PASSWD WITHOUT VI
As admins We never forget the root password,
RIGHT?
Although sometimes we do inherit machines in
which we don't know the root password.
Here is a way to null the root password from
the password file.
It comes a time in every admins life that we
will have to go into mini-root and change the
password file without the use of vi.
The following example shows how to achieve this
on the /etc/shadow file, but the same basic
commands can be achieved on the /etc/passwd file
for those platforms that don't support shadow
passwords.
Use "ed" - and the 13 dots method
---------------------------------
# cp /etc/shadow /etc/shadow.bak
# ed /etc/shadow
1p
s/:.............:/::/
1p
w
q
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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 GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3520 - September 29, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
NULL ROOT PASSWD WITHOUT VI
As admins We never forget the root password,
RIGHT?
Although sometimes we do inherit machines in
which we don't know the root password.
Here is a way to null the root password from
the password file.
It comes a time in every admins life that we
will have to go into mini-root and change the
password file without the use of vi.
The following example shows how to achieve this
on the /etc/shadow file, but the same basic
commands can be achieved on the /etc/passwd file
for those platforms that don't support shadow
passwords.
Use "ed" - and the 13 dots method
---------------------------------
# cp /etc/shadow /etc/shadow.bak
# ed /etc/shadow
1p
s/:.............:/::/
1p
w
q
--------------------------------------------------------------------------
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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
==========================================================================
Minggu, 28 September 2014
Unix Tip: THE EXECUTION OF FIND
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
UNIX GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3519 - September 28, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
THE EXECUTION OF FIND
The -exec extension to the find command is a very useful and
flexible utility.
You can use it to get a nice list of all the files in a directory
tree:
find . -type f -exec ll {} \;
or to copy all the files in a directory tree into one, large
directory:
find . -type f -exec cp -p {} /newdir \;
Or say now that you've copied all those files into one directory
there are too many .bak files to delete all at once with the 'rm'
command (yes, that's possible):
find . -name \*bak -exec rm {} \;
There are also bunches of other useful exensions to the 'find'
command. Check out the man page, and you'll find a great tool
for basic sysadmin stuff.
This tip generously supported by: emathias@wwa.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 GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3519 - September 28, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
THE EXECUTION OF FIND
The -exec extension to the find command is a very useful and
flexible utility.
You can use it to get a nice list of all the files in a directory
tree:
find . -type f -exec ll {} \;
or to copy all the files in a directory tree into one, large
directory:
find . -type f -exec cp -p {} /newdir \;
Or say now that you've copied all those files into one directory
there are too many .bak files to delete all at once with the 'rm'
command (yes, that's possible):
find . -name \*bak -exec rm {} \;
There are also bunches of other useful exensions to the 'find'
command. Check out the man page, and you'll find a great tool
for basic sysadmin stuff.
This tip generously supported by: emathias@wwa.com
--------------------------------------------------------------------------
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To Unsubscribe: http://www.ugu.com/sui/ugu/show?tip.unsubscribe
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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
==========================================================================
Sabtu, 27 September 2014
Unix Tip: PROTECT THE ROOT DIRECTORY AT ALL COST
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
UNIX GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3518 - September 27, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PROTECT THE ROOT DIRECTORY AT ALL COST
Here is a little extra guard that can be taken if
anyone attempts, or accidentally recursively removes
files inside a directory. If and when it occurs,
the person will constantly be prompted with the
question"are you sure?"
Here is how it works in a safe area:
% cd /usr/tmp
% mkdir foo
% touch /usr/tmp/foo/\-i
% chmod 000 /usr/tmp/foo/\-i
NOTE: Use the fully qualified path to create the
file when creating.
% cd foo
% touch fee fii foo fum
% rm -rf *
Every little bit helps!
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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 GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3518 - September 27, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PROTECT THE ROOT DIRECTORY AT ALL COST
Here is a little extra guard that can be taken if
anyone attempts, or accidentally recursively removes
files inside a directory. If and when it occurs,
the person will constantly be prompted with the
question"are you sure?"
Here is how it works in a safe area:
% cd /usr/tmp
% mkdir foo
% touch /usr/tmp/foo/\-i
% chmod 000 /usr/tmp/foo/\-i
NOTE: Use the fully qualified path to create the
file when creating.
% cd foo
% touch fee fii foo fum
% rm -rf *
Every little bit helps!
--------------------------------------------------------------------------
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To Unsubscribe: http://www.ugu.com/sui/ugu/show?tip.unsubscribe
To Submit A Tip: http://www.ugu.com/sui/ugu/show?tip.today
==========================================================================
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
==========================================================================
Jumat, 26 September 2014
Unix Tip: KEEP THOSE DAEMONS RUNNING
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
UNIX GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3517 - September 26, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
KEEP THOSE DAEMONS RUNNING
Here is a script that will keep daemons running
if the decide to die for some unforseen reason.
This tip generously supported by: ken@theglobeandmail.com
-------------------- cut here -----------------
#!/bin/csh
#
# NAME
# keepitup.csh - Keep demons up and running
#
# SYNOPSIS
# keepitup.csh
#
# DESCRIPTION
# If any of the following processes are down, then start them up
# again. This script can be run every few minutes from a crontab.
#
# AUTHOR
# Ken Stevens <kstevens@globeandmail.ca>
foreach daemon ( \
/opt/GIS/apps/EventDispatcher/scripts/EventDispatcher.pl \
/opt/GIS/apps/CatchFTP/scripts/ProcessFTP.pl \
/opt/GIS/apps/NewsHound/scripts/NewsHound.pl \
)
ps -e | fgrep `echo $daemon:t | cut -c1-8` > /dev/null
if ( $status > 0 ) then
echo Restarting $daemon
date
$daemon &
endif
end
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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 GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3517 - September 26, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
KEEP THOSE DAEMONS RUNNING
Here is a script that will keep daemons running
if the decide to die for some unforseen reason.
This tip generously supported by: ken@theglobeandmail.com
-------------------- cut here -----------------
#!/bin/csh
#
# NAME
# keepitup.csh - Keep demons up and running
#
# SYNOPSIS
# keepitup.csh
#
# DESCRIPTION
# If any of the following processes are down, then start them up
# again. This script can be run every few minutes from a crontab.
#
# AUTHOR
# Ken Stevens <kstevens@globeandmail.ca>
foreach daemon ( \
/opt/GIS/apps/EventDispatcher/scripts/EventDispatcher.pl \
/opt/GIS/apps/CatchFTP/scripts/ProcessFTP.pl \
/opt/GIS/apps/NewsHound/scripts/NewsHound.pl \
)
ps -e | fgrep `echo $daemon:t | cut -c1-8` > /dev/null
if ( $status > 0 ) then
echo Restarting $daemon
date
$daemon &
endif
end
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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
==========================================================================
Kamis, 25 September 2014
Unix Tip: BE CAREFUL WITH NIS+
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
UNIX GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3516 - September 25, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
BE CAREFUL WITH NIS+
To rebuild your /etc/passwd file use:
nisaddent -rv -f /etc/passwd passwd
HOWEVER, if you perform the above command
you must perform the following command on
the shadow file:
nisaddent -mv -f /etc/shadow shadow
DO NOT USE the nisaddent -rv -f command on
the /etc/shadow file, this command will confuse
replica servers and lock everyone off of a system.
--------------------------------------------------------------------------
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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 GURU UNIVERSE
UNIX HOT TIP
Unix Tip 3516 - September 25, 2014
http://www.ugu.com/sui/ugu/show?tip.today
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
BE CAREFUL WITH NIS+
To rebuild your /etc/passwd file use:
nisaddent -rv -f /etc/passwd passwd
HOWEVER, if you perform the above command
you must perform the following command on
the shadow file:
nisaddent -mv -f /etc/shadow shadow
DO NOT USE the nisaddent -rv -f command on
the /etc/shadow file, this command will confuse
replica servers and lock everyone off of a system.
--------------------------------------------------------------------------
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To Submit A Tip: http://www.ugu.com/sui/ugu/show?tip.today
==========================================================================
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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