A. chmod u+x emp[1-3]
B. chmod 777 emp*
C. chmod u+r ??? emp
D. chmod 222 emp?
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Related Mcqs:
- Which command is used to concatenate all files beginning with the string ’emp’ and followed by a non-numeric characters ?
A. cat emp[!0-9]
B. more [emp][!0-9]
C. cat emp[x-z]
D. cat emp[a-z] - Which command is used to copy all files having the string chap and any two characters after that to the progs directory ?
A. cp chap?? progs
B. cp chap* progs
C. cp chap[12] /progs/*.*
D. cp chap?? /progs/* - Which command is used to list out all the hidden files along with the other files ?
A. ls -l
B. ls -x
C. ls -F
D. ls -a - Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories ?
A. rm *
B. rm -r *
C. rm all
D. rm *.* - Which command is used to display all the lines with the string ‘sales’ from the file empl.lst ?
A. cut sales empl.lst
B. /sales > empl.lst
C. grep sales empl.lst
D. cat | /sales > empl.lst - The command to count the number of files in the current directory by using pipes, is_______________?
A. ls | wc
B. ls -l | wc -l
C. ls | wc -w
D. ls | ws -c - Which option is used with cmp command to give a detailed list of the byte number and the differing bytes in octal for each character that differs in both the files ?
A. -l
B. -d
C. -r
D. -b - Which of the following files will displayed by this command cat *ch* ?
A. patch
B. catch
C. .ch
D. All of the above - What command is used to compare the files ?
A. ccp
B. du
C. cmp
D. comp - Which command is used to make all files and sub-directories in the directory (progs) executable by all users ?
A. chmod -R a+x progs
B. chmod -R 222 progs
C. chmod -1 a+x progs
D. chmod -x a+x progs
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