Unix Tip: WHERE WAS IT STARTED?

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3407 - June 7, 2012

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WHERE WAS IT STARTED?



When you want to find out
where a process as ben
started on SUN server, use:

/usr/proc/bin/pwdx [pid].

It will give you the path of
the executable.


This tip generously supported by: erik.vincent.teleglobe.ca



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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.

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Unix Tip: TRIMMING THE LOG

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3406 - June 6, 2012

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TRIMMING THE LOG


Various unix processes can
produce fast growing logs that
sometimes need to be trimmed
instead of deleted, for reference
or troubleshooting. And you
likely have no desire to edit the
files. Here is a handy ksh
script that will quickly trim
the log so it keeps recent
information and lets you keep as
many lines as you think you might
need. I call it trimlog:

#! /bin/sh
# trimlog
filesize=`cat $1|wc -l`
trim=`expr $filesize - $2`
if [ $trim -gt 0 ]
then
sed "1,$trim d" $1 > /tmp/$1
mv /tmp/$1 $1
echo $1 trimmed by $trim lines
fi

Use it by feeding in the name of
the log you want to trim followed
by the number of lines you want to
keep:

# trimlog oracle_listener.log 10000


Of course you can't use it in
the /tmp directory. There are
probably newer and more efficient
ways to do this, but this works.


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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: FOLDING IN LINUX

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3405 - June 5, 2012

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FOLDING IN LINUX

Fold Long Line files to
Finite Width output device
files.

Ex: fold -b < long_line_file >folded_file

Now the folded_file will
contain output with newlines
inserted after maximum bytes
specified. This will be
useful when editing special
files. You can do the reverse
using "expand" command.


This tip generously supported by: srinu.sasubilli@wipro.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
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Unix Tip: THE NEXT UID

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3404 - June 4, 2012

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

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THE NEXT UID

Here is one way to find out the
next available UID on a system.

It takes both the password and
group files and finds the next
available UID and displays it.

(No cats were harmed in the making
of this script)

#!/bin/bash
awk -F":" '{ print $3 }' /etc/passwd > number_list
awk -F":" '{ print $3 }' /etc/group >> number_list
A=` sort -g number_list | tail -1`
A=`expr $A + 1`
echo "New Available UID is $A"




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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: TRANSFERRING MULTIBYTE FILES

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3403 - June 3, 2012

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

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TRANSFERRING MULTIBYTE FILES

Do you find trouble in transferring
multibyte binary data files to Windows
and then read through HexEditor ?
(Or some such windows based application )

Try Solaris/HP-UX command /usr/bin/od
to generate octal and hexadecimal Dump !

-x Interpret words in hex.

$od -x <Raw_File_Name>

will generate Hex View on stdout.
For more usage on the command explore
"man od".

This tip generously supported by: tcs2@ideacellular.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
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Unix Tip: LOGGING MAKES

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3402 - June 2, 2012

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

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LOGGING MAKES

To keep the log of make task or
compilation session or build
package process, you may do:

$ make bzImage 2>&1|tee build.log

To append further log to a file,
continue with:

$ make modules 2>&1|tee -a build.log


This tip generously supported by: ophil@gstu.gomel.by




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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: ALIAS YOUR CONNECTIVITY

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3401 - June 1, 2012

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

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ALIAS YOUR CONNECTIVITY

For quicker access to remote systems
alias your telnet, ssh, ftp, or rlogin
connections to save time.

alias srocket 'ssh -l myaccount rocket.foo.bar.com'
alias sfrocket 'sftp -l myaccount rocket.foo.bar.com'
alias trocket 'telnet rocket.foo.bar.com'
alias rrocket 'rlogin -l myaccount rocket.foo.bar.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
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