Shell Scripting Commands in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

Shell Scripting Commands in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

1) Displaying the file contents on the terminal -

cat-used to concatenate files

more-it is used to filter for paging through text one screenful at a time

less-it is used to viewing the files instead of opening the files

head-used to print first N lines of a file

tail-used to print last N lines of a file

2) File, directory manipulation commands -

mkdir-used to create directory

cp-copy the files & directory

mv-move the files or directories

rm-remove the files or directories

touch-used to create or update file

3) Extract, sort and filter data commands -

grep-used to search for specified text in a file

sort-used to sort content of files

wc-used to count number of characters, words in a file

cut-used to cut specified part of a file

4) Basic terminal navigation commands - 

ls-to get list of all files or directories

cd-used to change the directory

du-show disk usage

pwd-show present working directory

man-show manual of any commands

rmdir-used to remove a directory

5) File permission, commands -

chown-used to change owner of file

chgrp-used to change group owner of file

chmod-used to modify/access/permission of user

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