Unix & Linux
Is it true that “cron.daily runs anacron everyhour”?
On Ubuntu, what is the calling relation between cron and anacron?
I am confused by looking at /etc/anacrontab, /etc/cron.daily/0anacron and /etc/crontab.
Difference between less violent kill signal -HUP (1) -INT (2) and -TERM (15)
Apart from the most violent kill -9 (SIGKILL), I don’t quite understand the difference between the 3 other common signals (here) -HUP (1), -INT (2), and -TERM (15).
Remove characters if they do not follow specified patterns
I want to clean up some files, and make make the way in which they are written more uniform.
How to disable the user list on GDM3 login screen?
Environment:
ssh-add returns with: “Error connecting to agent: No such file or directory”
ssh-add alone is not working:
+ or @ mark after running ‘ls -al’
In Mac OS X, run ‘ls -al’ gives me something like this. drwxrwxrwx+ 4 smcho staff 136 May 5 09:18 Public drwxr-xr-x+ 6 smcho staff 204 Feb 1 2010 Sites drwxrwxrwx 9 smcho staff 306 Feb 2 2010 backup [email protected] 36 smcho staff 1224 Sep 4 22:51 bin What’s the + or @ at the … Read more
How can I echo dollar signs?
For example, $PATH and $HOME
Emergency Mode and Local Disk
I have added this entry to my /etc/fstab
How to follow links in linux man pages?
Is there a way to follow the links mentioned in a man page? For example, here’s the man page for ps; how do I access the underlined link circled in red in the screenshot: top(1)?