免費PDF新版102-500考古題＆最頂尖的Lpi認證培訓 -最新更新的Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0

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>> 新版102-500考古題 <<

Lpi 102-500考古題分享 - 102-500考題

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最新的 LPIC Level1 102-500 免費考試真題 (Q197-Q202):

問題 #197
X is running okay but you're concerned that you may not have the right color depth set. What single command will show you the running color depth while in X?

A. xcd
B. xwininfo
C. cat /etc/X11
D. xcolordepth
E. xcdepth

答案：B

問題 #198
Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes?

A. core
B. quota
C. edquota
D. ulimit

答案：D

問題 #199
How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?

A. env -i FOOBAR./myscript
B. unset -v FOOBAR;./myscript
C. env -u FOOBAR./myscript
D. set -a FOOBAR="";./myscript

答案：C

解題說明：
The env command can be used to run a utility or command in a custom environment without having to modify the currently existing environment1. The -u or --unset option can be used to remove a variable from the environment12. Therefore, the command env -u FOOBAR./myscript will run the script./myscript in an environment where the variable FOOBAR is suppressed. The other options are incorrect for the following reasons:
A . unset -v FOOBAR;./myscript: This will unset the variable FOOBAR in the current shell, not just for the script execution. The semicolon (;) separates two commands, so the script will run in the same environment as the unset command.
B . set -a FOOBAR="";./myscript: This will set the variable FOOBAR to an empty string, not suppress it. The -a option means that the variable will be exported to the environment of subsequent commands, so the script will still see the variable FOOBAR, but with no value.
D . env -i FOOBAR./myscript: This will run the script in an empty environment, not just suppress the variable FOOBAR. The -i or --ignore-environment option means that no environment variables will be passed to the command12. Reference: env command in Linux with Examples - GeeksforGeeks, env - Wikipedia.

問題 #200
Which of the following commands displays all environment and shell variables?

A. getargs
B. ls
C. env
D. lsshell
E. lsenv

答案：C

解題說明：
The command that displays all environment and shell variables is env. The env command prints a list of the current environment variables, which are variables that are defined for the current shell and are inherited by any child shells or processes. The env command can also be used to run another program in a custom environment without modifying the current one1. The env command is part of the GNU coreutils package and is available on most Linux systems2.
The other commands are not valid or do not display all environment and shell variables. The getargs command does not exist in Linux. The lsenv command is a utility to list information about IBM Power Systems firmware, not environment variables. The ls command lists the files and directories in the current working directory, not environment variables. The lsshell command is a utility to list the available shells on a system, not environment variables.
References:
* LPI Linux Essentials: 1.4. Using sudo
* LPI Linux Administrator: 102.5. Use Debian package management
* LPI Linux Engineer: 201.1. Measure and Troubleshoot Resource Usage
* LPI Linux Professional Certification Program
* https://linuxconfig.org/how-to-set-and-list-environment-variables-on-linux
* https://www.digitalocean.com/community/tutorials/how-to-read-and-set-environmental-and-shell-variables
* https://unix.stackexchange.com/questions/176001/how-can-i-list-all-shell-variables

問題 #201
What keyword is missing from this code sample of a shell script?
____ i in *.txt; do
echo $i
done

A. for
B. while
C. until
D. loop

答案：A

問題 #202
......

102-500考古題分享: https://www.newdumpspdf.com/102-500-exam-new-dumps.html

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免費PDF新版102-500考古題＆最頂尖的Lpi認證培訓 -最新更新的Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0

Lpi 102-500考古題分享 - 102-500考題

最新的 LPIC Level1 102-500 免費考試真題 (Q197-Q202):

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