How to declare functions in unix shell script?

function Dissplay () { echo "This is how we define function" } Display # Invoking Function ## Function should be defined before we invoke it

What is the syntax of "grep" command?

syntax of "grep" command syntax: grep {word to lookup} {filename} Ex: grep man test

How Connect to a Database in Shell Programming?

you have a "sqlplus" command to connect to database. command is as follows: sqlplus / @test.sql

What is the syntax of "expr" command?

it is used to use arithmatic operation in shell scripting stntx: expr op1 opertor op2 where op1 and op2 may be any integer no(without any decimalpoint)and operator can be + Addition - Subtraction / division % Modular \* Multiplication

what is "umask"?

umask is used to set the default directory/file access restriction during it creation. For example: In '.profile' if you use 'umask 033' then if you create any file/directory that will be in 'rwx-r--r--'

How to rename all the files in a folder having specific extension? E

Hi Nagesh, Thanks for the reply but I dont think this will work as $file= myFile.txt and mv $file $file.my will rename to myFile.txt.my I found the solution by extracting basedirectory and filename then renaming it to req. extension. th

write a shell script to identify the given string is palindrome or n

set -x input_string=$1 if [ -z "$input_string" ] ; then echo "Please enter a Text along with the script name\n" exit fi reversed_string=$(rev $input-string) if [ "$input_string" -eq "$reverse_string

What is the basic difference you find between a shell script and per

Shell script is platform(OS) only for Unix flavour,dependent whereas perl is OS independent

In shell scripting if text is surrounded by single quotes what does

'Single Quote' preserves all special characters within STRING. like when we use \a \b \t inside the string in shell script.

what do u mean by $#,$* in unix programming?

$# - number of command line arguments or positional parameters $* - All of the positional parameters, seen as a single word

How u convert string "hi pravin how are you?" to "Hi P

Dear amlan Iwant answer which work for any string given.

If you have a string "one two three", which shell command

Cut command

Create a bash shell script that removes all files whose names end wi

#/bin/bash rm `find . -name *~`

write a shell script that counts a number of unique word contained i

#!/bin/csh # Here tr -s ' ' replaces all multiple ' ' with single ' ' # next pipe the above stream to replace each ' ' with '\n' # next pipe the above stream to get a sorted list of words # then p

How to group the commands in shell scripting?

(unix cmd 1; unix cmd2) eg: ubuntu@ubuntu:~$ (w > fname ; wc -l fname) 10 fname ubuntu@ubuntu:~$

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