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-List 20 largest files (larger than 5 MB) sorted by megabytes:
-
- find / -type f -size +10000 -print0 | xargs -0 du -m | sort -nr | head -20
-%
-You can keep specific rc.conf configurations in individual files
-under /etc/rc.conf.d/ where each file is named after the $name of
-the rc.d script. Some configurations may have different names than
-the script; see the $name variable to check.
-%
-You can see the total used buffers in megabytes with:
-
- vmstat -s | awk '
-/ bytes per page$/ { bpp = $1 }
-/ cached file pages$/ { cfp = $1 }
-/ cached executable pages$/ { cep = $1 }
-END { print((cfp + cep) * bpp / 1024 / 1024); }'
-%
-You can view a value of a variable in pkgsrc by using the show-var
-target, for example:
-
- make show-var VARNAME=MAINTAINER
-%
-You can view the basic order of your rc.d scripts with:
-
- rcorder /etc/rc.d/*
-%
-You can ask questions about NetBSD at the netbsd-users@NetBSD.org
-mailing list. Be sure to clearly explain your problem, what you
-tried, what results you had, and what you expected.
-%
-You can view your non-default Postfix settings with:
-
- postconf -n
-%
-To report about installed packages with known vulnerabilities,
-fetch the latest pkg-vulnerabilities file as the superuser with:
-
- pkg_admin fetch-pkg-vulnerabilities
-
-And then run:
-
- pkg_admin audit
-%
-The following shows an example of temporarily adding 10MB more swap
-space for virtual memory:
-
- dd if=/dev/zero of=/root/swapfile bs=1024 count=10240
- chmod go= /root/swapfile
- swapctl -a /root/swapfile
-%
-If your console ever gets broken, you can try resetting it to its
-initial state with:
-
- printf "\033c"
-%
-If you installed a package, but don't know what the software is
-called or what executables to run, use pkg_info with the -L switch
-to list the package's files and search for /bin:
-
- pkg_info -L PACKAGE-NAME | grep /bin
-%
-A new user can be added by using the useradd tool with the -m switch
-to create the home directory. Then set the password. For example:
-
- useradd -m susan
- passwd susan
-%
-To modify user account information use the chpass or usermod tools.
-If you need to edit the user database directly, use the vipw command.
-%
-You can temporarily start the SSH server by running the following
-as root:
-
- /etc/rc.d/sshd onestart
-%
-Several NPF examples are available in the /usr/share/examples/npf/
-directory.
-%
-Want to dual boot using a bluetooth mouse or keyboard? Use btkey(1)
-to store the link key in the hardware.
-%
-If you are having trouble connecting to a remote bluetooth device,
-try the btconfig(8) inquiry command. The kernel will retain some
-clock offset information that may help.
-%
-You can download files via HTTP using the ftp(1) command; for example:
-
- ftp http://www.NetBSD.org/images/NetBSD.png
-%
-The mtree(8) tool can be used to check permissions, ownerships,
-file changes, and more when compared against a specification. For
-example to check directory ownership and permissions for standard
-NetBSD directories, run:
-
- /usr/sbin/mtree -e -p / -f /etc/mtree/NetBSD.dist
-%
-If you need reminders on your console to leave, use the leave(1)
-tool. For example to receive reminders to leave in one hour:
-
- leave +0100
-%
-To stop non-superuser logins until next boot, as root:
-
- touch /etc/nologin
-%
-When extracting distribution tar sets, be sure to use the pax -pe
-option or the tar -p switch to preserve the user and group and file
-modes (including setuid and setgid). This is needed, for example,
-so su(1) will work after extracting the base.tgz set.
-%
-Math can be done within the sh(1) and ksh(1) shells or with expr(1),
-dc(1), bc(1), or awk(1). Here are some simple examples:
-
- echo $((431 * 79))
- expr 60 \* 60 \* 24 \* 7
-%
-You can view network connections with the fstat, netstat -a, sockstat,
-and "systat netstat" commands.
-%
-Visit the NetBSD Security website to keep track of advisories:
- http://www.NetBSD.org/support/security/
-Or join the security-announce mailing list for alerts:
- http://www.netbsd.org/mailinglists/#security-announce
-%
-Here's an example of finding what package a file belongs to:
-
- pkg_info -Fe /usr/pkg/bin/inw
-%
-Many log files are checked for rotation every hour by newsyslog(8).
-It is configured in /etc/newsyslog.conf.
-%
-NetBSD's default cron jobs are defined in the /var/cron/tabs/root
-file. As the superuser, use "crontab -l" to view it. To edit it,
-use "crontab -e" (which defaults to using the vi(1) editor).
-%
-You can make sure that your system is stable and behaves correctly by
-running the tests in /usr/tests (which come from the tests.tgz set).
-To do so:
-
- vi /etc/atf/NetBSD.conf
- cd /usr/tests
- atf-run | atf-report
-%