To show history command
$history
To delete some history by delete line number with -d
$history -d line number
$history -d 1617
To delete all history with -c
$history -c
Or alternative command
$cat /dev/null > ~./bash_history
Sort way
$> ~./bash_history
To Re run last command
$history
1610 ls -lF
1611 history
1612 speedtest-cli
1613 history
1614 history -d 1611
To Re run command by line number with !
$!1612
how to fix can't access RightFax web error 500.19
Go to Start windows -> Server Manager-> Install HTTP Activation
Reference: http error 500.19 and error code: 0x80070021
Ref: www.alibabacloud.com
Solution
On an on-premises Windows client, press Win+R to open the Run dialog box. In the Run dialog box, enter gpedit.msc in the Open field, and then click OK.
In the left-side navigation pane of the Local Group Policy Editor dialog box, choose Computer Configuration > Administrative templates > Network > Lanman Workstation.
In the Setting section of the Lanman Workstation page, click Enable insecure guest logons.
In the Enable insecure guest logons dialog box, select Enabled. Click Apply.
Mount the SMB share.
If you still fail to mount the SMB share, restart the Windows client to clean up the cache and try again.
I found this error "Unable to negotiate with IPADDRESS port XXXX: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1" when I use ssh command to remote Linux Server on Ubuntu client version 20.04 up. This error can fix by creating a new file config at the path .ssh see below.
cd /home/userlogin/.ssh
vim config
Add text following
---------------------------------------------------------
Host mail.yourserver.com diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
-----------------------------------------------------------
save file and run command ssh again it is successful with ubuntu 20.04 but if you use ubuntu 22.04 you'll find more errors like this "Unable to negotiate with IPADDRESS port XXXX: no matching host key type found. Their offer: ssh-rsa,ssh-dss" you can fix it by adding more text at file config like this.
---------------------------------------------------------
Host mail.yourserver.com diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
HostKeyAlgorithms ssh-rsa
PubkeyAcceptedKeyTypes ssh-rsa
-----------------------------------------------------------
now you can use ssh command on ubuntu and you can create a shortcut command in file .bashrc like this
add text following to the button
---------------------------------------------------------
# alias
alias myserver='ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 -p xxxx admin@mail.yourserver.com'
---------------------------------------------------------
and then run . ~/.bashrc for creating shortcut command
Referrence:
For HostKeyAlgorithms ssh-rsa
Rum powershell command with
$creds = get-credential
Enter username & Password Email
copy and paste with this command
Send-MailMessage –From test@tv.com –To akka@global.net –Subject "Fwd: Test Email" –Body "Test SMTP Service from Powershell on Port 587" -SmtpServer smtp.office365.com -Credential $creds -UseSsl -Port 587
with attach file
Send-MailMessage –From test@tv.com –To akka@global.net –Subject "Fwd: Test Email" –Body "Test SMTP Service from Powershell on Port 587" -Attachments "C:\PS\SampleAttachment.txt" -SmtpServer smtp.office365.com -Credential $creds -UseSsl -Port 587
Ref. uncaoffice-365-test-smtp-on-port-587
https://infra.engineer/azure/56-office-365-test-smtp-on-port-587-using-powershell
1. run this command on Windows 10 with Administrator (If not run this ubuntu will not R/W file on mount drive)
powercfg /h off
Ref: ntfs-3g
2. Add command on file /etc/fstab
# mount NTFS drive
UUID=483C6CC03C6CAB20 /media/user/drive_c ntfs-3g defaults,uid=1000,gid=1000,rw 0 1
UUID=3874B76D74B72D0E /media/user/drive_d ntfs-3g defaults,uid=1000,gid=1000,rw 0 1
* Create folder for mount Path file
mkdir -p /media/user/drive_c
mkdir -p /media/user/drive_d
* For check disk NTFS on ubuntu run command
sudo blkid
* Allow user to RW file
uid=1000,gid=1000,rw
I use multi OS in my notebook. I want to mount file NTFS from windows to Ubuntu.
1. Create file
sudo mkdir -p /media/user/drive_c
sudo mkdir -p /media/user/drive_d
sudo chown user:guser /media/user/* -R
2. check path location NTFS
sudo fdisk -l
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 206847 204800 100M EFI System
/dev/nvme0n1p2 206848 239615 32768 16M Microsoft reserved
/dev/nvme0n1p3 239616 168011775 167772160 80G Microsoft basic data
/dev/nvme0n1p4 168011776 285198335 117186560 55.9G Linux filesystem
/dev/nvme0n1p5 762908672 967706623 204797952 97.7G Microsoft basic data
/dev/nvme0n1p6 967708672 968757247 1048576 512M Windows recovery environme
/dev/nvme0n1p7 968757248 998117375 29360128 14G Windows recovery environme
/dev/nvme0n1p8 998117376 1000214527 2097152 1G Windows recovery environme
/dev/nvme0n1p9 285198336 300822527 15624192 7.5G Linux swap
/dev/nvme0n1p10 300822528 762908671 462086144 220.3G Linux filesystem
Partition table entries are not in disk order.
Script check quemail stuck on server and alert mail to mailadmin for resolve
vim checkquemail.sh
---------------------------------Start---------------------------------------------
#!/bin/bash
#Start check quemail on system
PATHCHECK="/home/user/quemail.txt"
/usr/sbin/postqueue -p |tail -n 1 > $PATHCHECK && /usr/sbin/postqueue -p |grep "^[A-F0-9]" |sort -k5rn -k6n >> $PATHCHECK
#If found quemail stuck on systems and then send mail alert to Systemadmin
#Set the variable which equal to zero
prev_count=0
count=$(grep 'MAILER' $PATHCHECK | wc -l)
#check word 'MAILER' on text file on path $PATHCHECK if more than 0 do next step
if [ "$prev_count" -lt "$count" ] ; then
# Send a mail to given email id when errors found in log
#SUBJECT="WARNING: found $count quemail was stuck on mailgw, pls check now "`date --date='yesterday' '+%b %e'`""
SUBJECT="WARNING: found $count quemail was stuck on mailgw, pls check now."
#This is a temp file, which is created to store the email message.
MESSAGE="/tmp/logs.txt"
FROM="noreply@domain.com"
TO="mailadmin@domain.com"
echo "ATTENTION: found that there are $count mail queues in the system left to be sent for urgent inspection." >> $MESSAGE
echo "Server: `hostname`" >> $MESSAGE
echo "\n" >> $MESSAGE
echo "+------------------------------------------------------------------------------------+" >> $MESSAGE
echo "$count mail queues" >> $MESSAGE
echo "+------------------------------------------------------------------------------------+" >> $MESSAGE
grep -i "`date --date='yesterday' '+%b %e'`" $PATHCHECK | grep 'MAILER' $PATHCHECK >> $MESSAGE
#list quemail stuck on system
mutt -s "$SUBJECT" -e "my_hdr From: Server Info <noreply@domain.com>" -- "$TO" < $MESSAGE
rm $MESSAGE
fi
---------------------------End Script----------------------------------
Create crontab for run script
---------crontab -e --------
# m h dom mon dow command
*/30 * * * * /home/user/./checkquemail.sh
--------
----------------script--------------------------------------
find /pathfile/* -type f -mtime +7 -exec rm -rf {} \;
--------------------------------------------------------------
