amita

• Apr 2nd, 2016

DOS style backslashes to UNIX style: vi filename escape:%s/ctrlm//g/ enter ------------------------------- Directory comparision diff -r dir1 dir2 --------------------------------------- last line ad...

sorkan

 Profile Answers by sorkan Questions by sorkan

• Sep 7th, 2009

dos2unix only removes the control-M characters at the end of the line.  You need to use sed to do the search and replace for '' to '/'.

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Editorial / Best Answer

Answered by: Suman Saha

• Jun 27th, 2005

---

cat filename.txt | cut -c 10-20

Anil Kumar

• Feb 3rd, 2016

Cut -c 10-20 filename

Bharat

• Sep 21st, 2015

Cat 1.txt | cut -c 10-20.

The question is about the character positions and not the lines from 10 to 20

Improve Answer

How many users have logged in and logged out in last five or 10 minutes

sahilgaix

 Profile Answers by sahilgaix Questions by sahilgaix

• Oct 15th, 2015

# To find out who logged in/logged out in last 5 minutes(including who is currently logged in) last|while read line do echo $line|grep "still logged in" > /dev/null if [ $? -eq 0 ] then echo...

Ataul

• May 21st, 2015

Who | wc -l | last -5
#to get the counts of who are still logged in

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Kantha

• Sep 18th, 2013

$? :- provide exit status of last executed command In case the last command successfully executed then the value is 0 , if its failed to execute then the value non-zero. Example: ...

saravanan

• Jul 9th, 2013

It gives exit status of the command.

Use echo $? to get exit status of the script

Hint : if you get 0 then success, 1 means failure and some outputs

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write a shell script that accept 7 numbers in loop,then make a sum of this numbers. then count the numbers that are greater than 250 ?

satish

• Jul 10th, 2013

"perl total=0 for a in 1 ...

ardiansyah

• Jul 5th, 2012

Code
#!/bin/bash
"Write a number : ""c=c+1"
        fi
        let "total = i + total""total = $total"
echo " > 250 = $c "

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What are the different types of shells available in UNIX?

nitin

• Mar 3rd, 2013

There is a lot of shell available in UNIX.
Ex:- Bourne shell, Bash shell, CShell, Korn shell etc.

santarvedi

• Oct 30th, 2012

$cat /etc/shells

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Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Jul 11th, 2012

Windows NT supports multitasking with the help of preemptive multitasking which is based on preemptive operating system. The operating system takes control of the processor from a task in two ways: W...

peter

• Nov 1st, 2005

Preemptive multitask

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Mo

• Apr 20th, 2012

Positional parameters are reads either by displaying there value or can be assigned to another variables.

echo $1 $2 $9 ${10} ${20}
shift operators can be used to move around the positional parameters.

example: test.sh 1 2 3 4 5

a=$1

while [ -z "$a" ]
do

echo $a
shift

done

rks03075

 Profile Answers by rks03075 Questions by rks03075

• Jun 4th, 2010

Echo $1echo $2

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Mo

• Apr 20th, 2012

$# : Stands for counts of the number of the positional parameters passed to a script.

example test.sh 1 2 3 4 5 6 7 , there are 7 paramaters as passed so the count of the $# is 7

manu_khatri

 Profile Answers by manu_khatri Questions by manu_khatri

• Feb 18th, 2011

By using $# parameter, the program checks whether the right number of arguments have been entered.

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Hello,I am trying to write a unix shell script program to send mail to cc and to list.I am using the '-c' option for mailx unix command,but am getting an error illegal -c option. Could any one please guide me to use the mailx command in unix shell scripting to send the mail to the Cc and To list along with the attachment ?Thanks in advanceAppreciate the response

Mitra

• Nov 24th, 2011

Code
uuencode attachment1 attachment1 | mailx -c x@yz.com,a@bc.com -s "subject" m@no.com 

Satya Sai Behera

 Profile Answers by Satya Sai Behera Questions by Satya Sai Behera

• Nov 24th, 2011

You should be able to use something like the following example to get the CC option working with mailx. Preferably create a list of users needed to be put in the CC option (as mailCClist.txt in the ex...

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How will you write a shell script to connect to SQL database?

Ashutosh Gupta

• Sep 10th, 2011

In vi editor
vi connect.sh
#!/bin/bash

sqlplus -s sys as sysdba

NARESH

• Jul 31st, 2011

Sqlplus -s username/password@schema name
:wq

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abdas

 Profile Answers by abdas Questions by abdas

• Jul 25th, 2011

Code
 

iamjogi

 Profile Answers by iamjogi Questions by iamjogi

• Aug 23rd, 2009

Try this:echo "one two three" | xargsthe output is: one two three

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What are the different security mechanisms available in UNIX?

Gunjan David

 Profile Answers by Gunjan David Questions by Gunjan David

• Jun 27th, 2011

A) vi /etc/default/logincomment the line of /dev/consoleb)vi .rhostsenter the hostname by which the only user can connect with your system....bt no one else.....c) disable the ftp for the selected users in /etc/ftpusers file ...

Deepa_0982

 Profile Answers by Deepa_0982 Questions by Deepa_0982

• Jan 21st, 2009

Unix is having 3 ways of Security Mechanism:1. By granting or revoking File permissions. Owner or Admin can change permissions to be given to group or others by using chmod command in Unix.2. Login is...

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Write a shell script to save the output of 'ls -ltr' every five minutes and after every hour it should print which all files are changed/modified/created.

abdas

 Profile Answers by abdas Questions by abdas

• Jun 26th, 2011

Find $HOME -mmin -5 -ls     # run the same in cron

swetha_0505

 Profile Answers by swetha_0505 Questions by swetha_0505

• Oct 26th, 2009

find . -mtime 0   # find files modified between now and 1 day ago (i.e., within the past 24 hours)find . -mtime -1  # find files modified less than 1 day ago (i.e., within the past...

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Write a shell script to join two CSV text files based on value of some columns?

abdas

 Profile Answers by abdas Questions by abdas

• Jun 26th, 2011

Cat file1 file2 >  file3

nkumar85

 Profile Answers by nkumar85 Questions by nkumar85

• May 18th, 2010

Bash does not support this kind of feature, you can do this in PERL, because PERL supports all feature which are needed to work with CSV worksheets.

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abdas

 Profile Answers by abdas Questions by abdas

• Jun 23rd, 2011

a=10.50b=11.01if [ $a -gt $b ]         then         echo a is greater than belse          echo a is less than bfi

balaksara

 Profile Answers by balaksara Questions by balaksara

• Nov 29th, 2008

A1=10.50
b1=11.01
st=$(echo "$a1 > $b1" | bc)
if [ $st -eq 1 ];
then
# 1 == true
echo "True"
else
echo "False"
fi

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nitashaa

 Profile Answers by nitashaa Questions by nitashaa

• Jul 18th, 2008

global variable is created using export command in ksh - export x='name' In csh its created using setenv command-setenv x 'name'this 'x' variable will be visible in curren...

riteshvado

 Profile Answers by riteshvado Questions by riteshvado

• Aug 13th, 2007

try this simple script it will clear your concept :- script a.sh :- ----------export A=3B=5sh b.sh--------script b.sh :- -----------echo "exported variable $A is :- $A"echo "Variable $B -- $B "---------A persists in b.sh whereas B doesn't.

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vijayanand86

 Profile Answers by vijayanand86 Questions by vijayanand86

• Jan 20th, 2010

K Shell,Bourne Shell,Bash,C-Shell

cmanne

 Profile Answers by cmanne Questions by cmanne

• Mar 26th, 2007

ashellbshellbash (born again shell)cshellkshellzshell

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vijayanand86

 Profile Answers by vijayanand86 Questions by vijayanand86

• Jan 20th, 2010

Contains the list of arguments passed to the function.

vidyamurali2003

 Profile Answers by vidyamurali2003 Questions by vidyamurali2003

• Dec 30th, 2008

It contains the actual arguments passed to a shell script

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amrashri

 Profile Answers by amrashri Questions by amrashri

• Apr 10th, 2011

Crontab 0 4 * * * command

Jyotiranjan Mohanty

• Apr 7th, 2007

1st step$ cat > cmdfile//<Minute> <Hour> <Day Of Month> <Day Of Week> <Command>    0           &n...

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