Write the C or C++ program system2 that reads, when being executed, oS commands command line parameters must be legal Unix/Linux commands. Print the number of coi argv. A sample execution by fictitious user "mike" is: herb$ ./a.out pwd ls whoami argc = 4 argv[1] = pwd Executing command 'pwd' /Users/mikey argv[2] = 1s Executing command 'ls' Applications Contacts Desktop testl Downloads Favorites Music Pictures familie herb pix_low_2020 test2 test.c testl.c Library Movies Public Documents a.out test2.c argv[3] - whoami Executing command 'whoami' mikey
Write the C or C++ program system2 that reads, when being executed, oS commands command line parameters must be legal Unix/Linux commands. Print the number of coi argv. A sample execution by fictitious user "mike" is: herb$ ./a.out pwd ls whoami argc = 4 argv[1] = pwd Executing command 'pwd' /Users/mikey argv[2] = 1s Executing command 'ls' Applications Contacts Desktop testl Downloads Favorites Music Pictures familie herb pix_low_2020 test2 test.c testl.c Library Movies Public Documents a.out test2.c argv[3] - whoami Executing command 'whoami' mikey
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
![Write the C or C++ program system2 that reads, when being executed, OS commands via the "command line parameter" C/C++ feature, and then executes them. The
command line parameters must be legal Unix/Linux commands. Print the number of commands entered. To prepare, read about argc, argv, and envp. Focus is only argc and
argv. A sample execution by fictitious user "mike" is:
herb$ ./a.out pwd ls whoami
argc
4
pwd
argv[1]
Executing command
/Users/mikey
'pwd'
= ls
argv[2]
Executing command 'ls'
Applications
Contacts
Music
Pictures
familie
herb
Downloads
testl
Favorites
Library
Movies
testl.c
pix_low_2020 test2
test2.c
Desktop
Public
Documents
a.out
test.c
argv[3] = whoami
Executing command
mikey
'whoami'](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3128d9e2-e802-40b2-a444-5ed816f99dd9%2Fd461a655-eaba-4fbf-ac30-edb976a1f3c0%2Fsyuohe_processed.png&w=3840&q=75)
Transcribed Image Text:Write the C or C++ program system2 that reads, when being executed, OS commands via the "command line parameter" C/C++ feature, and then executes them. The
command line parameters must be legal Unix/Linux commands. Print the number of commands entered. To prepare, read about argc, argv, and envp. Focus is only argc and
argv. A sample execution by fictitious user "mike" is:
herb$ ./a.out pwd ls whoami
argc
4
pwd
argv[1]
Executing command
/Users/mikey
'pwd'
= ls
argv[2]
Executing command 'ls'
Applications
Contacts
Music
Pictures
familie
herb
Downloads
testl
Favorites
Library
Movies
testl.c
pix_low_2020 test2
test2.c
Desktop
Public
Documents
a.out
test.c
argv[3] = whoami
Executing command
mikey
'whoami'
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