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while read line
do
echo $line
done < file


The above code for getting the content line by line.

head -1 file | cut -c 15-18

for file in `ls dir`
do
echo $file
var=`head -1 dir/$file |cut -c 10-19 | sed -r 's/([0-9]{2})([0-9]+$)/\2.\1'/`
echo $var;
`mv A/$file dir/$var`
done


Here dir is the...

Now I corrected

NO_OF_LOOPS=$1
for i in `seq 0 $NO_OF_LOOPS`

sort file | sed '/^$/d' | sed -re '$s/(.*)/\1\n\n\n/'

sed -r 's/(\[.*\])(.*)\]$/\1/' file

Refer the following link

The AWK Manual - Printf Examples (http://people.cs.uu.nl/piet/docs/nawk/nawk_36.html)

find -mtime +2 -exec rm {} \;

DON'T YOU KNOW THAT IS THE ACTUAL REQUIREMENT.
READ THE FOLLOWING LINE OF THE POSTER's POST.
Ex : - If today is 28th Mar 2010 then I have to delete the files which arrived on 1st Mar 2010,

FOR...

find -mtime +28 -exec rm {} \;

Using chmod command you can achieve this.


for i in $@
do
if [ -d $i ]
then
`chmod 000 $i`;
else
echo "$i not a directory"
...

This code not give the created file. It will give the modified file only.

---------- Post updated at 12:07 PM ---------- Previous update was at 12:05 PM ----------




You can't get the file...

This code not give the created file. It will give only the modified file only

Try the following code


sed '1,$N;s/\n//g' file | sed -r 's/\[[a-z]+=([0-9]+)\]\[[a-z]+=([a-z]+)\].*\[[a-z]+=([a-z]+)\]\[[a-z]+=([0-9]+)\]/\1,\4,\2,\3/' | sort

You did some mistake in your code. Because in the regular expression you are not match correctly. The following code will give the correct answer

cat filename | sed 's/.*http\://g'


or...

sed -r 's/\[[a-z]+=([0-9]+)\]\[[a-z]+=([a-z]+)\].*\[[a-z]+=([a-z]+)\]/\1,\2,\3/' filename | sort

cat file | cut -d'|' -f 1-4 | sed '2d' | grep ">"

cat file| grep -Eo "\(.*\)" | sed 's/(//'|sed s'/)//'

#!/bin/bash
i=1;
while read line;
do
sed -n ${i}p config.txt
i=`expr $i + 1`;
done < "config.txt"


This code will work for any no of lines

echo "aaaaa,bbbbb,aaaaa,ccccc,aaaaa" | sed 's/,/\n/g' | grep -c "aaaaa"

string="welcome"
echo ${string:(-3)}


The output is
ome

In the first question you need to write the following script

#!/bin/sh

for i in `seq 1 10`;
do
echo $i
done


In the second code is working correctly in my system.

use strict;
use warnings;
use Data::Dumper;
open FH, "<new" or die "Can't Open $!";
my @array1;
my %hash;
<FH>;
while(<FH>)
{
my @array=split(' ',$_);
push(@array1,$array[4]);
}...

use strict;
use warnings;
use Data::Dumper;
my $var1=shift;
my $var;
if( -d $var1)
{
opendir(DIR,$var1);
my @array=readdir(DIR);
foreach(@array)
{
$var=$var1."/".$_;
...