Page 101 - COPA - TT - Bengali

erases the current line and allows replacement text to be typed in
cc (2cc erases the current line and the next line and allows replacement text to
be typed in for both lines)

deletes the characters to the left of the cursor in the current word and allows
replacement characters to be typed in
cb (3cb deletes the characters to the left of the cursor in the current word
together with the two words to its left and then allows replacement text to be
typed in)

R activates text input mode allowing text under and to the right of the cursor to
be overwritten one character at a time
xp transposes two adjacent characters
deep transposes two adjacent words
ddp transposes two adjacent lines
~ changes case of the character under the cursor

J joins the current line with the next line
u reverses the effects of the most recent command that has changed the buffer
U undoes all changes made to the current line during the current visit to it

searches the text for the first instance of a designated string
:s/ (:s/cucumber searches the text for the first instance of the string
"cucumber")

n searches the text for the next instance of a designated string
replaces the first instance of a designated string
:s/ / / (:s/cucumber/radish/ replaces the first instance of the string "cucumber" with
the string "radish")

:%s/ replaces every instance of a designated string
(:%s/cucumber/radish/ replaces every instance of the string "cucumber" with
/ /
the string "radish")

inserts text into the currently open file from another file
:r (:r lettuce.txt inserts text into the currently open file from the file named
"lettuce.txt")

appends the text from the currently open file into another file
:w>> (:w>> cabbage appends the text from the currently open file into the file
named "cabbage")

Managing files and directories
ফাইল এবং লডনরক্টলর পলরচালনা (Managing files and directories)
Objectives: At the end of this lesson you shall be able to
উনদেশ্য: এই পাঠের শেঠে আপনি সক্ষম হঠেি:-
• define manipulating files and directories
• define basic file commands
• ফাইল এবং লডনরক্টলর ম্যালনপুনলি করা িংজ্াল়ি করনি
• explain other file commands
• মৌমৌললক ফাইল কমান্ড িংজ্াল়ি করনি
• define additional useful commands in linux OS.
• অন্যান্য ফাইল কমান্ড ব্যাখ্্যা করনি
Manipulating files or directories: Using Linux isn't your hard drive in order to organize your information and
• ললনাক্স ওএি-এ অলিলরক্ত ্রকারী কমান্ড িংজ্াল়ি করনি।
different from any other computer manage how your system works or looks. This section
operating system. You create, delete, and move files on shows you how to do these tasks quickly and easily.
IT & ITES : COPA (NSQF - Revised 2022) - Related Theory for Exercise 1.6.26-29
64 ফাইল বা লডনরক্টলর ম্যালনপুনলি করনি : নেিাসে ে্যেহার আপিার নসঠস্টম কীোঠে কাজ কঠর ো শেখায় ো পনরচােিা
করা, অ্ি্য শকাি কম্ম্উটার অ্পাঠরষ্টং নসঠস্টম শেঠক করার জি্য আপনি আপিার হােনে ড্াইঠে ফাইেগুনে বেনর,
আোো িয়। আপিার েে্য সংগষ্েে করার জি্য এেং মুছ ু ি এেং সরাি । এই নেোগষ্ট আপিাঠক শেখায় নকোঠে
এই কাজগুনে দ্রুে এেং সহঠজ করঠে হয়।
IT & ITES : COPA (NSQF - িংনশালর্ি 2022) - আর.টি. অনুশীলননর জন্য 1.6.26-29 73