The date time format can be anything sensible with underscores. If you want to use the current datetime as a filename, you can use date and command substitution. Please note that filenames containing hour format timestamps will probably not sort by name the way you want them to sort. You can avoid this issue by using hour format timestamps instead. If you don't have a requirement to use that specific date format, you might consider using an ISO compliant datetime format.
Some examples of how to generate valid ISO datetime representations include:. If you want "safer" filenames e. Please keep in mind that the above examples all assume local system time. If you need a time representation that is consistent across time zones, you should specify a time zone offset or UTC. You can get UTC time in your date call by specifying the -u flag and adding "Z" to the end of the datetime string to indicate that the time is UTC like this:. As this is usable with any command, I show for copying a file to a new location with timestamped addition to the filename:.
Indeed, inclusion of such quotes prevents the command from working if included as a crontab line, due to the way shell parsing works. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?
Learn more. How do you put date and time in a file name? Ask Question. Asked 5 years, 8 months ago. Active 1 year ago. Viewed k times.
The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. How can I fully log all bash scripts actions? Ask Question. Asked 11 years, 11 months ago. Active 1 year, 5 months ago. Viewed k times. I have script like below:! How to check in logs that SSH command was successful?
Improve this question. BlueMark BlueMark 1 1 gold badge 8 8 silver badges 8 8 bronze badges. You can also use the "script" to perform this. See this post: [here][1] [1]: stackoverflow. Add a comment. Active Oldest Votes. I generally put something similar to the following at the beginning of every script especially if it'll run as a daemon :! Improve this answer.
I added those threelines exec,trap,exec at the beginning of the script and I am able to get both stdout and stderr.
Please let me know how can I avoid getting these errors. I using busybox based sh in custom board. Great KungFu here!!! PiyushChordia link fix: cubicrace. Show 8 more comments. Invoke shell scripts with -x to output everything: sh -x foo. Alex Holst Alex Holst 2, 1 1 gold badge 14 14 silver badges 13 13 bronze badges. Dunno why this is with bash, but I could only get the 'set -x' output to the logging file with: bash -x foo.
Christian Christian 4, 1 1 gold badge 22 22 silver badges 27 27 bronze badges. This works great. Actually you can direct both stdout and stderr with Amandasaurus Amandasaurus I put:! How this will help for ssh logs and successful execution of command? Here we also discuss the introduction and how linux find file command works? You may also have a look at the following articles to learn more —. Submit Next Question. By signing up, you agree to our Terms of Use and Privacy Policy.
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Email ID. Contact No. It will display the print messages as files are examined by the system calls like the stat and lstat.
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