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12 Cards in this Set
- Front
- Back
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How do you recover a root password? |
1) Append rd.break to grub menu 2) mount -oremount,rw /sysroot 3) mount /sysroot 4) passwd root 5) touch /.autorelabel |
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what is the command to delete 3 files named file1, file2, file3? |
rm {file1, file2, file3} |
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What is the command to delete directory ~/tempdir and all sub directories and files? |
rm -rf ~/mytempdir
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What is the single command to create a directory named tempdir along with a sub-directory (temp1) under the home directory? |
mkdir -p ~/tempdir/temp1 |
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how do you interrupt the boot process to change the target to the rescue target? |
1) Edit the grub file by pressing e on the appropriate line 2) append the end of the line that starts with linux16: systemd.unit=rescue.target 3) CTL X |
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What's the command to get the version of linux the system is running? |
hostnamectl uname -a |
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What is the command to shutdown the system in 5 minutes? What is the command to shutdown the system at 1:00am? |
shutdown +5 shutdown 01:00 |
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How do you abort a shutdown? |
shutdown -c |
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What is the command to rename the hostname and make sure the change survives a reboot? |
1) hostnamectl set-hostname 2) sudo systemctl restart systemd-hostnamed |
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How do you create a new ssh key? |
ssh-keygen |
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where is the ssh key stored by default? |
/home/<username>/.ssh/id_rsa |
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ping a host 10 times |
ping <hostip> -c 10 |
