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10 Cards in this Set
- Front
- Back
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What will affect the following command?
ls -l /usr/bin >> /tmp/list.txt |
> the contents of the /usr/bin directory will be redirected into a file called /tmp/list.txt, inserted before the previous contents of the file.
> the contents of the /usr/bin directory will be redirected into a file called /tmp/list.txt, inserted after previous contents of the file > > the contents of the /usr/bin directory will be redirected into a file called /tmp/list.txt and then the contents of /tmp/list.txt will be output to the screen >> the contents of the /usr/bin directory will be redirected into a file called /tmp/list.txt,overwriting the previous contents of the file |
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Which of the following commands sorts the contents of -wordlist1- and -wordlist2- and sends the result to standard output?
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- cat /usr/wordlist1 >> /usr/wordlist2 | tee
- cat /usr/wordlist1 /usr/wordlist2 | sort - cat /usr/wordlist1 > /usr/wordlist2 | sort - cat /usr/wordlist1 | /usr/wordlist2 | sort |
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You are trying to debug a shell script called -myscript- and to aid you in this task you would like to have the output of the script be recorded in a text file. Which command would satisfy your requirements?
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myscript | testfile.txt
echo myscript >> testfile.txt myscript | echo | testfile.txt myscript >> testfile.txt |
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Which command reads from standard input and writes to standard output -and- files?
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?
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Which of the following commands displays the contents of -wordlist1- and -wordlist2- then sorts the combined contents, then sends the results to the monitor and a file named -sortedwordlist-?
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- cat /usr/wordlist1 /usr/wordlist2 | sort sortedwordlist
- cat /usr/wordlist1 /usr/wordlist2 | tee sortedwordlist - cat /usr/wordlist1 /usr/wordlist2 | sort | tee sortedwordlist - cat /usr/wordlist1 >> /usr/wordlist2 | sort sortedwordlist |
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You are trying to debug a shell script that has the command ls -s in it. You suspect an error is occurring here and want to sent the results of the operations (successful or error) to a file name -Friday- in order to examine it later. Which commands should you use?
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ls -s> Friday 2>&1
ls -s >> Friday ls -s > Friday ls -s Friday |
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Which of the following commands will give the same results as
-cat < turbo-? |
cat 2> turbo
cat turbo cat> 1 turbo cat 1$2> turbo |
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Which command overcomes the 128 KB shell command size restriction by breaking up long lists of arguments?
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?
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Which symbol uses the output of one command as the input of another command?
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?
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Which of the following commands redirects output to standard arror?
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cat txtfile 2>&1
cat txtfile | tee 2 cat txtfile | 2 cat txtfile 1>&2 |
