Unix Which of the following commands is used to update access and modification times of a file? grep wc touch cat grep wc touch cat ANSWER DOWNLOAD EXAMIANS APP
Unix Which of the following is not a communication command. grep mesg mail write grep mesg mail write ANSWER DOWNLOAD EXAMIANS APP
Unix Which of the following special shell variables is used to process number of the last background job? $0 $* $! $# $0 $* $! $# ANSWER DOWNLOAD EXAMIANS APP
Unix Which shell's wild-cards is used to match a single character? [ijk] ? * None of these [!ijk] [ijk] ? * None of these [!ijk] ANSWER DOWNLOAD EXAMIANS APP
Unix Which commands is used to assign executable permission to all of the files named "letter"? chmod ugo+x letter chmod ugo+r letter chmod u+x letter chmod ugo+rw letter chmod ugo+x letter chmod ugo+r letter chmod u+x letter chmod ugo+rw letter ANSWER DOWNLOAD EXAMIANS APP
Unix Which of the following commands is used to identify the type of file by context? more file ls cat more file ls cat ANSWER DOWNLOAD EXAMIANS APP
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