Crontab

# Example of job definition:
# .---------------- minute (0 - 59)
# |  .------------- hour (0 - 23)
# |  |  .---------- day of month (1 - 31)
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
# |  |  |  |  .---- weekday (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  *  user command to be executed
10 * * * * /bin/sh backup.sh    # every hour at 10"

Cron crontab

# Adding tasks easily
echo "@reboot echo hi" | crontab

# Open in editor
crontab -e

# List tasks
crontab -l [-u user]

Source: devhints.io

*/1 in crontab

*/1 means exactly the same as *

Crontab

*/15 * * * * YOUR COMMAND >/dev/null 2>&1

*/5 in crontab

*/5 * * * *  means Execute a cron job every 5 minutes

Similar codes

0 vote105 views1 answer
Installing parse-dashboard with npm
Shell/Bash
0 vote109 views1 answer
Recursively delete node_modules
Shell/Bash
0 vote119 views1 answer
Windows cmd "head -n " equivalent
Shell/Bash
27 votes113 views3 answers
Ubuntu install telegram
Shell/Bash
0 vote80 views0 answer
Shell/Bash
0 vote111 views1 answer
Start networking ubuntu recovery
Shell/Bash
3 votes109 views2 answers
Macos install chromium
Shell/Bash
0 vote116 views1 answer
Git checkout branch and update submodules
Shell/Bash
0 vote115 views1 answer
Crate db helm
Shell/Bash
0 vote119 views1 answer
How to image an entire disk on linux
Shell/Bash