grep "^[^#;]" /path/to/my/file grep -r --include=<pattern> <string> <directory>grep -A 2 -B 2 "pattern" /path/to/my/file"grep -H word /path/to/fileToday I want to show you how to download JDK with one single command. Yes, because if you want to get java from oracle web site you have to accept license before start the download.
If you want to don't want to use browser and you have to get it from command line you can use
# curl -LO ${URL} -H "Cookie: oraclelicense=accept-securebackup-cookie" where {URL} can be:
I never knew how to connect to an IMAP server when SSL/TLS were forced. With unencrypted connections, you can just Telnet in, but this exposes your login credentials and data, so many servers will not allow that. The secure equivalent to Telnet, I found, is OpenSSL's s_client tool. The documentation clearly labels it as a debug tool.
You'd resort to either connection method for verification or troubleshooting purposes; I can't imagine anyone wanting to do employ Telnet or s_client regularly — rather than use some mail client.
As an example, here's how you could log into an Exchange account, select the Inbox folder, and log out:
# openssl s_client -connect server:port -crlf ? LOGIN username password ? SELECT Inbox ? LOGOUT
# echo "This is the content of test file." > inputfile.txt
# openssl ts -query -data inputfile.txt -cert -sha256 -no_nonce -out request.tsq
# curl -k -H "Content-Type: application/timestamp-query" --data-binary @request.tsq "https://tsa.safecreative.org/" > inputfile.txt.tsr
# curl -k -H "Content-Type: application/timestamp-query" --data-binary @request.tsq "https://tsa.safecreative.org/" > inputfile.txt.tsr
# export VISUAL=nano; crontab -e
mysql> pager less -n -i -S
[client] pager = less -n -i -S
SELECT table_schema "Data Base Name", sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MB", sum( data_free )/ 1024 / 1024 "Free Space in MB" FROM information_schema.TABLES GROUP BY table_schema ;
iptables -L --line-number
iptables -A OUTPUT -m limit --limit 1/minute -j LOG --log-level 4 --log-prefix 'OutAllow1/m'
iptables -D INPUT 4
iptables -F iptables -X iptables -t nat -F iptables -t nat -X iptables -t mangle -F iptables -t mangle -X iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT
# sudo apt-get install samba smbfsWe’ve got samba installed, but now we’ll need to configure it to make it accessible. Run the following command to open the configuration file, substituting your editor of choice:
# sudo nano /etc/samba/smb.confFind this section in the file:
####### Authentication ####### # “security = user” is always a good idea. This will require a Unix account # in this server for every user accessing the server. See # /usr/share/doc/samba-doc/htmldocs/Samba-HOWTO-Collection/ServerType.html # in the samba-doc package for details. ; security = userUncomment the security line, and add another line to make it look like this:
security = user username map = /etc/samba/smbusersThis will set Samba to use the smbusers file for looking up the user list.
# sudo smbpasswd -a <username>Next, we'll add that username to the smbusers file.
# sudo nano /etc/samba/smbusers
<username> = “<username>”
#======================= Share Definitions ======================= # Un-comment the following (and tweak the other settings below to suit) # to enable the default home directory shares. This will share each # user’s home directory as \\server\username [homes] comment = Home Directories browseable = yes # By default, \\server\username shares can be connected to by anyone # with access to the samba server. Un-comment the following parameter # to make sure that only “username” can connect to \\server\username valid users = %S # By default, the home directories are exported read-only. Change next # parameter to ‘yes’ if you want to be able to write to them. writable = yesNow you should be able to map a drive on windows using the following share format:
\\ubuntumachine\username
# find . -iname 'myfile'
# find . -name 'MyFiLe'
# find . -empty
# find . -type f -exec ls -s {} \; | sort -n -r | head -10# find . -type f -exec ls -s {} \; | sort -n | head -10# find . -size +100M
# find . -name '*.pdf' -printf '%s %p\n'
# find /db_backups/ -mtime +30 -delete
# find . -type f -print0 | tar -czvf backup.tar.gz --null -T -
If you have a resource that fails to start, and there's nothing obvious in the logs (look for "lrmd", "LRM operation", etc.), you can try starting it manually to diagnose the problem further. Likewise for failed stop and monitor ops.
First, you have to unmanage the resource, so Pacemaker won't try to do anything with it, with:
# crm resource unmanage <resource>Configure environment:
# export OCF_ROOT=/usr/lib/ocf
# export OCF_RESKEY_<param>=<value>
# ... (likewise for all other resource parameters, run
"crm configure show <resource>" to verify what
params you need to set here)Run the op:# /usr/lib/ocf/resource.d/heartbeat/<ra> start ; echo $?Look for helpful error messages, and check the return code.
# /usr/lib/ocf/resource.d/heartbeat/<ra> stop # sh -x /usr/lib/ocf/resource.d/heartbeat/<ra> start ; echo $?Once you've figured out what the problem is and solved it, give the resource back to Pacemaker:
# crm resource manage <resource>
# sudo crm status
# sudo crm configure edit `resource_name`
# crm ra classes
# crm ra list ocf
#sudo apt-get install ifmetric
# The primary network interface allow-hotplug eth0 auto eth0 iface eth0 inet dhcp metric 200 allow-hotplug eth1 # The secondary network interface auto eth1 iface eth1 inet dhcp
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:11:22:33:44:55", KERNEL=="eth*", NAME="hte1"
# /etc/init.d/networking stop && modprobe -r driver_name && udevadm control --reload-rules && udevadm trigger && modprobe driver_name && /etc/init.d/networking startSee you next.