Bash: execute a script only when no other instance of the script is running.
Possible issues having two instances of a cronjob at the same time…
$ grep -rn "#Bash Scripting" ./posts
bash: How to get first and last dates of previous month
I had a task that i needed to calculate some data between the first and the last date of the previous month, bash is powerful and provides……
Bash — parallel command execution
There are three ways to execute commands in parallel using bash…
Bash — pipes and redirections
stdin,stdout and stderr…
Bash — and/or/no-care chains, how to make your life easier
What are and/or/no-care chains?…
bash tricks: how to copy ssh key to all /etc/host entries with an one-liner
Scenario: you have just landed to a company which does not have a an automation tool to copy your key to all hosts, to make things worse……