Szesnaste_21
0 21 词汇卡 michalesq
问题  |
答案 |
|||
|---|---|---|---|---|
|
check if packages coming from outside repo are allowed in inside repo
|
gpgcheck
|
|||
|
What is the input in. repo saying about certificate?
|
gpgkey
|
|||
|
show enabled repos in the system
|
yum repolist
|
|||
|
hows all repos in the system
|
yum repolist all
|
|||
|
How to add repo automatically?
|
yum-config-manager --add-repo=http://URL to repo
|
|||
|
How to disable repo?
|
enabled = 0 // yum-config-manager --disable <repoId>
|
|||
|
How to perform obtaining GPG key and installation in the system?
|
Go to the site where GPGs are available, i.e. Fedora, download gpg-key and put it in /etc/pki/rpm-gpg, copy to /etc/pki/rpm-gpg/nazwa_gpg, add gpgcheck=1, add pgpkey=file:///etc/pki/rpm-gpg/nazwa_gpg
|
|||
|
Displays info about Kernel?
|
uname -r
|
|||
|
Info about installed kernel and what can be downloaded
|
yum list kernel
|
|||
|
Update kernel automatically
|
yum update kernel
|
|||
|
update kernel from. rpm:
|
1) yumdownloader kernel, 2) yum install linux-firmware, 3) rpm -ivh new_kernel. rpm
|
|||
|
How to boot system with different kernel?
|
grub2-set-default 1
|
|||
|
Replace word hello with word world with sed command
|
sed -i 's/hello/world/' file. txt
|
|||
|
Replace every occurrence of Nick with John in report. txt
|
sed 's/Nick|nick/John/g' report. txt
|
|||
|
Add 8 spaces to the left of a text for pretty printing.
|
sed 's/^/ /' file. txt >file_new. txt
|
|||
|
Display only one paragraph, starting with "Of course" and ending in "attention you pay"
|
sed -n '/Of course/,/attention you \ pay/p' myfile
|
|||
|
Show only lines 12-18 of file. txt
|
sed -n 12,18p file. txt
|
|||
|
Show all of file. txt except for lines from 12 to 18
|
sed 12,18d file. txt
|
|||
|
Double-space file. txt
|
sed G file. txt
|
|||
|
Write all commands in script. sed and execute them
|
sed -f script. sed file. txt
|
|||
|
Replace ham with cheese in file. txt except in the 5th line
|
sed '5! s/ham/cheese/' file. txt
|
|||
