Avoid running the script if a variable is not defined
I have a script looks like:
shell-script
Trying to send multiple text attachments via mail message
Running this script on: “Red Had Enterprise Linux Server release 5.11 (Tikanga)”
what is >> symbol and >& in unix/Linux?
I have a CRONTAB entry as below. Can someone tell me what the below statement is exactly doing? 1 0 * * * /vol01/sites/provisioning/MNMS/45627/45627.sh1 >> /vol01/sites/provisioning/MNMS/45627/output/cron.log 2>&1 Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them … Read more
How to use grep and cut in script to obtain website URLs from an HTML file
I am trying to use grep and cut to extract URLs from an HTML file. The links look like:
What is the difference between kill , pkill and killall?
I am familiar with kill command , and most of the time we just use kill -9 to kill a process forcefully, there are many other signals that can be used with kill. But I wonder what are the use cases of pkill and killall, if there is already a kill command.
Which are the standard commands available in every Linux based distribution?
I would like to know which are the standard commands available in every Linux system.
How do I trim leading and trailing whitespace from each line of some output?
I would like to remove all leading and trailing spaces and tabs from each line in an output.
Shell, Concatenating 2 strings to reference a 3rd variable
I am trying to do the following in my script:
How to check if there are no parameters provided to a command?
How do you check if $* is empty? In other words, how to check if there were no arguments provided to a command?
Bash Script getting stuck during execution
I have a bash script that is reading a CSV file , that contains source IP address , destination IP address and destination port.