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sed 's/.*://' <datafile.txt

Anchor the pattern :sed -e '/^dns.com$/,+2d' file
mydns.com
11
22
dns.com.au
11
22
LAST LINE

Try:
sed '/^dns\.com$/,+2d' /tmp/temp.txt

sed '/^dns\.com$/ {p;N;N;d;}' /tmp/temp.txt

What do you mean? I added to your code my comment:

[root@ser]# perldoc -l File::Scan::ClamAV > /usr/src/asas.txt
# here you redirect...

Have you looked at the inotify_add_watch(2) (http://man7.org/linux/man-pages/man2/inotify_add_watch.2.html) man page?

Hello anil510,

Could you please try following and let me know if this helps.

cat check_cron.ksh
A=`grep -rl maldet /etc/cron*`
echo $A | awk '{split($0, X, " ");}END{if(length(X)== 1){print...

Try:
touch "/usr/src/${var}_newfile_with_var.txt"
Otherwise the script will be trying to expand the non-existing variable $var_newfile_with_var. An underscore can be used as part of a variable...

It won't take core of switching the order on the first line, but the extra space problem can be resolved simply with:
awk '{print $1,$2,$3 $4}' file

Hello,

Here is an awk utility.


awk '/\/home\/user\/www/ || /\/home\/user\/mail/ || /\/home\/user\/access_logs/ {next} 1' file_name


Output will be as follows.

...

sed -i "/\/home\/user\/access-logs/d;/\/home\/user\/mail/d;/\/home\/user\/www/d" filename

Try this

#!/bin/sh

newDeviceID=0
deviceID=0
slotNum=0

MegaCli64 -PDList -aALL | grep -E 'Enclosure Device ID|Slot Number' > infile
while read line
do
newDeviceID=''
...

Change:
echo $varto:
echo "$var"

echo '2013-11-14 03:30:02 [441847] 1Vgnd4-001qwZ-36 <= user@domain.com U=user P=local S=9797
id=cd3732bbd0fbda5cb16384bb7d5b465d@localhost.localdomain T="Subject Subject Subject"
from...

try:

sed -n 's/.*T="\([^"]*\)".*/\1/p' infile

or
awk -F\" '/T=/{print $2}' infile

perl -lne 'print $1 if /(\d+\.\d+\.\d+\.\d+)/' /var/log/maillog

awk -F"[][]" '{print $2}' /var/log/maillog
55.66.77.88

Try alsoawk '{gsub (/[][]/,""); print "alias "$1"=\047ssh "$3"@"$2"\047"}' RS="" file
alias server.domain.com='ssh yyyyyyuser@11.22.33.44'

This is basically the same as mine (see post #2 above). The character range "[[:blank:]]" MadeInGermany uses is common, but not required by the standard to be understood. If your system understands...

sed 's/^[[:blank:]]*//' infile > outfile
while read line; do echo "$line"; done < infile > outfile

awk 'NF{A[++c]=$1}END{for(i=1;i<=c;i++) print (!(i%3)?A[i] RS:A[i])}' file

make sure you support Unix.com and a local charity ...
awk '{print $1}' /dir/file

echo "2013-06-11 23:55:14 [17780] 1Umexd-0004cm-IG <= user@domain.com XXX YY ZZZ" | awk -F"<= " '{split($2,a," ");print a[1]}'
user@domain.com

Different way to enter field separator
awk -F"<= " '{print $2}'
awk '{print $2}' FS="<= "

another way
awk '{split($0,a,"<= ");print a[2]}'

awk 'BEGIN{FS="<= ";}{print $2}'