Uop Pos433 File Processing Commands Worksheet

• What UID and PID have the highest amount of physical memory a process has used and is not swapped out? Show all processes and full output.

Top

Press F

Press D

Press P

CPU usage in descending order for all processes.

• If using a long listing and no process modifiers, what is the swap space amount for the bash command?

Top –p pidof_bash

Output

1 PID USER PR NI VIRT RES SHR S%CPU %MEM TIME+ COMMAND

2021 xyz 20 0 XXXXX XXXX 1664 S 0 0.2 0:00.43 bash

3 PID %MEM VIRT SWAP RES CODE DATA SHR NFLT NDRT S PR NI %CPU COMMAND

2021 0.2 22132 16m 4952 XXX XXXX X664 1 0 s 20 0 0 bash

Swap space

Top –p pidofbash

Press F

Press P

Press Enter

• When using top command, what command would you use to kill a process?

K

• If you were not using top command, what command would you use to kill a process?

Kill processid

Killall processname

• What command would you use to manually mount the standard CD-ROM device /dev/db1 at /media/disk?

Mount /dev/db1 /media/disk

• What command would you use to display the amount of available disk space on /dev/db1 in a human readable form?

df –h /dev/db1

• Type in the command grep - - help to access the help manual. Using this information and the information from the text, how would you write a command to find the pattern 111 in a file called myfile.txt?

Grep –ima “111” myfile.txt