Due $2/13$ by $11$:$59$ PM$.$ Assigned $2/6.$

Late, emailed, missing, or invalid files submitted are graded as zero; there is No Extension and No Regrading; please start on the assigned date and follow the instructions carefully.

NOTE: After you submit your work, Download and check it to ensure your submission was successful.

Difficulty: Medium

In this assignment, you will work with System Calls and contrast their usage and efficiency in your system.

Review attached os$-$system$-$calls.pdf$,$ then complete Exercise $1$: strace

The submission details are listed in the Exercise.

Notes & Clarifications:

$-$ Complete Exercise $1$: strace parts $1,2,3.($NOT part $4)$

$-$ For the submission, it is better to submit all of the files as one ZIP file.

$-$ Create a folder for this assignment, and then place all of your files in that folder, then ZIP the folder and submit it on Blackboard.

$-$ Make sure to place all of the required screenshots in the folder you are Zipping for submission.

$-$ The screenshots must include compiling high$-$level language sources, running programs showing their outputs, and running strace with all of their outputs redirected into a file.

$-$ Make sure to create output file $($use $.$out as extension$)$ for each strace you run.

$-$ You can capture the output of the strace using the unix redirection $2>$

$-$ The strace command requires to be used with the executable, and NOT the source code.

$-$ In case of Java, the execuatable is the class file that you can use with Java executable.

$-$ In case of Python and Bash, you need to run their text file with python and bash executable, respectively.

$-$ Examples:

Make sure to include the two strace outputs for each language in your Zip file $($there should be $10$ strace output files with $.$out extension$).$

gcc helloc.c $-$o helloc

strace $-$e trace$=$execve,open,openat,close,read,write,mmap $./$helloc $2>$ helloc.out

strace $-$c $./$helloc $2>$ helloc$2.$out

g$++$ hellocpp.cpp $-$o hellocpp

strace $-$e trace$=$execve,open,openat,close,read,write,mmap $./$hellocpp $2>$ hellocpp.out

strace $-$c $./$hellocpp $2>$ hellocpp$2.$out

To do strace for languages that require interpreters, such as Java, Python, Bash, you can use the interpreter command followed by your program:

strace $-$e trace$=$execve,open,openat,close,read,write,mmap java $./$Hellojava $2>$ Hellojava.out

strace $-$c java $./$Hellojava $2>$ Hellojava$2.$out

strace $-$e trace$=$execve,open,openat,close,read,write,mmap python$3./$hellopy$.$py $2>$ hellopy.out

strace $-$c python$3./$hellopy$.$py $2>$ hellopy$2.$out

strace $-$e trace$=$execve,open,openat,close,read,write,mmap bash $./$hellobash $2>$ hellobash.out

strace $-$c bash $./$hellobash $2>$ hellobash$2.$out