Exam (elaborations)
RHCSA - RH124: Questions & Answers (Expert Verified)
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RHCSA - RH124: Questions & Answers (Expert Verified)
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RHCSA - RH124: Questions & Answers (Expert Verified)View previously run commands in current shell Right Ans - history
Run previous command by matching string Right Ans - !string
Clear from cursor to end of line Right Ans - Ctrl+e
Clear from cursor to beginning of line Right Ans - Ctrl+u
Repeat previous command arguments Right Ans - Esc+.
Copy file4 to /tmp Right Ans - cp file4 /tmp
Move file3 and file4 into the directory /files Right Ans - mv file3 file4 /files
Delete file6 Right Ans - rm file6
Remove the directory /home/me/backup and its contents Right Ans - rm -r
/home/me/backup
Copy directory2 and its contents to /home/me Right Ans - cp -r
directory2 /home/me
Create the directory /backup/files in one command Right Ans - mkdir -p
/backup/files
This character represents a string of zero or more characters in the shell
Right Ans - *
This character represents a single character in the shell Right Ans - ?
In the shell, this will match the letters within the range a-l Right Ans - [a-l]
In the shell, this will match the characters NOT in the range g-k Right Ans -
[^g-k] or [!g-k]
Create 3 files Month_ ending with the numbers 1-3 Right Ans - touch
Month_{1..3}
, Two methods of command substitution Right Ans - `command` or $
(command)
These characters will suppress globbing and shell expansion Right Ans -
"command"
These characters will force the shell to interpret each character literally
Right Ans - 'command'
This will suppress a single character Right Ans - \
Search man pages intro for string Right Ans - man -a string
Search man page topics for string Right Ans - man -k string or apropos
string
Location where packages may place more detailed info Right Ans -
/usr/share/doc
Redirect STDERR to file and append Right Ans - 2>>file
Redirect STDOUT and STDERR to overwrite file Right Ans - >file 2>&1 OR
&>file
Redirect STDOUT and STDERR to append fiel Right Ans - >>file 2>&1 OR
&>>file
Pipe output into this command and it will send output to terminal and a
specified file, appending Right Ans - command | tee -a file.txt
In VIM, delete selected text Right Ans - x
In VIM, write and quit Right Ans - :wq
Show info about current logged in user Right Ans - id
Modify sudoers Right Ans - sudo visudo
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