terminal file output

digitalquake · Aug 17, 2017

Hello

I'm new! Thanks for the space

I was looking for some help on how to add a date and time to a filename when outputting it via command line.

I can't make it to work, does anyone knows how to do it please?
log app from here > '/Volumes/1TB/db/db.+DATE: %Y-%m-%d.backup'

it just print out the characters...

Raz0rEdge · Aug 17, 2017

Welcome to Mac-Forums..

To do this at the command line, you'll want to call the 'date' command with a string telling it how you want the output, for example

Code:

date '+%Y-%m-%d'

This will output 2017-08-17 today.

If you want to use that format and append it to a file you would do

Code:

touch my_file_`date '+%Y-%m-%d'`.backup

This will create a file called my_file_2017-08-17.backup in the current directory. Note that you have to surround the date command in backquotes (the key on the left of the 1 on your keyboard)..

digitalquake · Aug 17, 2017

Ah thank you so much!

How do you know that? I wasn't able to find anything on the man page... ://

Raz0rEdge · Aug 17, 2017

digitalquake said:
Ah thank you so much!

How do you know that? I wasn't able to find anything on the man page... ://

A career in software engineering...

Been doing things at the command line and scripting with Bash, AWK, Sed and so on for 15+ years..

digitalquake · Aug 18, 2017

Raz0rEdge said:
A career in software engineering... Been doing things at the command line and scripting with Bash, AWK, Sed and so on for 15+ years..

Definitely a good thing.

It's a bit wired with crontab. Seems mine is a tmp file full of tildaes. Is that correct?

I made a launchd script to backup the postgreSQL database at 03:01am every weekday but I would be more comfrotable to use crontab

Code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.dbbackup.plist</string>
    <key>ProgramArguments</key>
    <array>
        <string>/Volumes/.../_postgreSQL-backup/script/backup.sh</string>
    </array>
    <key>StartCalendarInterval</key>
<!--  Weekdays are 1 - 5; Sunday is 0 and 7   -->
    <array>
        <dict>
            <key>Weekday</key>
            <integer>1</integer>
            <key>Hour</key>
            <integer>3</integer>
            <key>Minute</key>
            <integer>1</integer>
        </dict>
        <dict>
            <key>Weekday</key>
            <integer>2</integer>
            <key>Hour</key>
            <integer>3</integer>
            <key>Minute</key>
            <integer>1</integer>
        </dict>
        <dict>
            <key>Weekday</key>
            <integer>3</integer>
            <key>Hour</key>
            <integer>3</integer>
            <key>Minute</key>
            <integer>1</integer>
        </dict>
        <dict>
            <key>Weekday</key>
            <integer>4</integer>
            <key>Hour</key>
            <integer>3</integer>
            <key>Minute</key>
            <integer>1</integer>
        </dict>
        <dict>
            <key>Weekday</key>
            <integer>5</integer>
            <key>Hour</key>
            <integer>3</integer>
            <key>Minute</key>
            <integer>1</integer>
        </dict>
    </array>
</dict>
</plist>

digitalquake · Aug 18, 2017

Ah solved. Crontabs are empty by default in mac. Edited with vim

terminal file output

digitalquake

Raz0rEdge

Well-known member

digitalquake

Raz0rEdge

Well-known member

digitalquake

digitalquake

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