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if it is about removing lines from one file which are there in another file comm command can help you, bit it works on sorted files. read 'man comm' to check

Way to find out pid of last process run in background

$ sleep 10 &
[1] 19959
$ echo $!
19959

ok .. now there is one more thing we might need to do while doing things in parallel.

suppose there 4 commands
cmd1,cmd2, cmd3, cmd4

goal is :
run cmd1 and cmd2 in parallel, once both are...

i would use perl to do that.

find command can help you

option of your interest : -mmin and -mtime

if x is the desired output, Add some number , say N in the output and try to check id the final output is x+N :)

as
'1' + 1 = '2'
and is also
' 1 ' + 1 = '2'

camel book has example which says count number of stars in sky

Perl Pattern Matching (http://www.sarand.com/td/ref_perl_pattern.html)

Create a file with some name, say converter.pl with content like,

#!/usr/bin/perl -w
use strict;

my @keyList = qw (edge100 BroadLeaves Conifers clc2006 slope aspect dem30sec);

print join...

well not sure about awk, but it would be very easy with perl.
are you interested in knowing the soln?

sed -i -e 's/__HOSTNAME__/$HOSTNAME/g' filename

where '__HOSTNAME__' will be place holder in the file

-i for inpalce editing

use perl, its better

yes..

as & will make comamnd to run in back ground ... so control will come to next line .. before the earlier one is finished .. and wait at the end will make parent script to wait for all child...

you wont be able to use this script in automated jobs, as it needs inputs from user.

how about making this script to take argument on command line, rather than having it interactive ?

it should be echo "echo \" somthing\" " > $file

try to search about
content-type :text/html

its a 'script', parsed line by line.
you wont find error until line is parsed or EOF is reached searching for expected line

DOS command ?
I could not find ren on my system, tried to search and Google/wiki said its dos command

Its more about knowing how '*' works, rather than mv command

if ur directory contains two .DAT files, F1.DAT and F2.DAT, and one TXT file, F.txt

actual command getting fired will be
mv...

from perldoc -f flock

Two potentially non-obvious but traditional flock semantics are that it waits indefinitely until the lock is granted, and that its locks merely advisory. Such...

Well when you say file is locked .. all it means is, its is locked for those who care for it,

e.g.
If I want to lock a file x, ill create file x.lock in particular location.
now when you come...

if : input file
of : output file
ibs : tell how many bytes to read at a time, something like block size
count: read those blocks for maximum of this times,

so


# dd if=infile ibs=N...

tar -czvpf file.tar.gz <directory>

'p' in option can help you

perhaps you want lines which contains '[kmem_' ?

---------- Post updated at 08:20 PM ---------- Previous update was at 08:19 PM ----------

or rather the one which includes 'Total [kmem_' ?

Was not sure if its always going to be 4 char long

s = echo $EachRecord | cut -d " " -f1
p = echo $EachRecord | cut -d " " -f2

it should be
s=`echo $EachRecord | cut -d " " -f1`
p=`echo $EachRecord | cut -d " " -f2`

note: no spaces around...