Refer: https://stackoverflow.com/questions/50042278/visual-studio-code-remove-blank-lines-from-code
Use regular expressions to delete, double-blank lines. [Ctrl]+[H]
Replace this:
^$\n\nWith this:
\nView Crontab Logs
Refer: https://askubuntu.com/questions/56683/where-is-the-cron-crontab-log
On a default installation the cron jobs get logged to
/var/log/syslogYou can see just cron jobs in that logfile by running
grep CRON /var/log/syslogThe above grep will return nohthing if your crontab has not been configured yet.
Debugging a Bash Script
Refer: https://tecadmin.net/tutorial/bash-scripting/bash-debugging/
Example – Enable Debug in Script
You can enable debug mode by adding set -xv option inside a shell script. This is useful to enable debugging for some part of the script.
#!/bin/bash
set -xv # this line will enable debug
cd /var/log/
for i in "*.log"; do
du -sh $i
doneRegex Between Two Strings
cat mobile_errors.txt.txt | grep -o -P '(?<=returned for booking ).*(?= with error code)' | sort | uniq > mobile_error_bookings.txtThe magic of this search is here:
grep -o -P '(?<=beginning string with space at end ).*(?= ending string with space at start of it)RegEx
Visual Studo Code Tricks
Remove Blank Lines
Search for:
^(?:[\t ]*(?:\r?\n|\r))+Replace with NOTHING.
Extract Email Addresses from a Log File
Refer: https://www.linuxshelltips.com/extract-email-addresses-from-text-file/
Input File: missing_pricing_emails.txt
Grab the email addresses
grep -oe "[a-zA-Z0-9._]\+@[a-zA-Z]\+\.[a-zA-Z]\+" missing_pricing_emails.txt | sort | uniq -cOr count how many are there
grep -oe "[a-zA-Z0-9._]\+@[a-zA-Z]\+\.[a-zA-Z]\+" missing_pricing_emails.txt | sort | uniq -c | wc -lUpdate Canon G7020 Firmware
G7020 printer issue - "The latest firmware is on the server. Install the firmware update" message
I see the constant message "The latest firmware is on the server. Install the firmware update" on the printer's screen. If I am pressing OK, the message is dissaperaing, but in an hour or two I can see it again. A cannot update firmware as official Canon servers do not contain any firmware versions
To update the firmware, please follow these steps:
- Press the wrench and screwdriver button 1 time
- Press the right arrow 2 times to select Device settings and press OK
- Press the right arrow 5 times to select Firmware update and press OK
- Press OK on Install update
Disable IPv6 from the command line on a Macbook
Run a command through the Terminal app:
- Open Launchpad.
- Search for Terminal.
- Click on the Terminal.app.
- If your active network is WiFi enter the following command:
networksetup -setv6off Wi-Fi- If you are on Ethernet:
networksetup -setv6off EthernetTo re-enable IPv6, you need to replace setv6off to setv6automatic for Wi-Fi or Ethernet:
networksetup -setv6automatic Wi-Fi
networksetup -setv6automatic EthernetFirefox Slow on VPN – Disable IPv6
In order to make make Cisco AnyConnect work faster on VPN for Firefox, disable IPv6.
about:config
network.dns.disableIPv6: trueReset Password
See instructions: Password Reset on Office Nov2022