How can I name my log files according to the date?

Tolidom

11/1/23, 6:33 PM

I have tried to do something like date=date and then name my file $date.txt but the output was date.txt.

Fun thing, I asked Copilot to help but I don't understand its advice and unsure how to fix it:

Crontab

# run the main script and outputs to a different file every day
20 12 * * * python3 export/main.py > export/logs/$(date +\%Y-\%m-\%d).log 2>&1

Oh by the way I'd like it to work with Fish shell or maybe understand how to forward a command from fish to bash.

2 + 1

bash

cron

fish

user68186

11/1/23, 7:10 PM

`cron` runs on its own thing (shell?) and does not have all the environmental variable in your default shell. You may have to specify the full path of the commands you want `cron` to run.

Score:2

Ubuntu

Farhad Kia

11/1/23, 7:11 PM

I don't know about Fish or your copilot advice but in order to save the output of a command into a variable in bash the syntax is:

variable_name="$(command)"

So to save the output of date to variable date you should do this:

date="$(date)"

Although since the default output of date command contains spaces, I recommend you use some thing like $(date +\%Y-\%m-\%d) instead of just $(date)

+ 0

Score:0

Ubuntu

devnull

4/23/24, 2:33 PM

try

export/logs/$(date --iso-8601 | tr --delete -).log

today (April 23) this yields

export/logs/20230423.log

I find this date format convenient because very concise and can be sorted: example

/empty/export/logs$ ls -l
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:23 20220423.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:23 20230423.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:24 20230513.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:24 20230523.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:24 20240423.log
/empty/export/logs$ ls -lr
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:24 20240423.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:24 20230523.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:24 20230513.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:23 20230423.log
-rw-rw-r-- 1 zzzz users 0 Apr 23 07:23 20220423.log

+ 0

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: How can I name my log files according to the date?

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.