Commands tagged FreeBSD sorted by votes

Commands tagged FreeBSD (13)

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Kill all Zombie processes (Guaranteed!)

It identifies the parents of the Zombie processes and kill them. So the new parent of orphan Zombies will be the Init process and he is already waiting for reaping them. Be careful! It may also kill your useful processes just because they are not taking care and waiting for their children (bad parents!). Show Sample Output
This is sample output - yours may be different.
```
No output. But if you want to see the PIDs of your Zombies' parents just use this piece:
ps -xaw -o state -o ppid | grep Z | grep -v PID | awk '{print $2}
```
11

kill -9 `ps -xaw -o state -o ppid | grep Z | grep -v PID | awk '{print $2}'`

khashmeshab · 2010-10-27 07:29:14 13
Chage default shell for all users [FreeBSD]

This command will set bash as the default shell for all users in a FreeBSD system.
This is sample output - yours may be different.
6

cd /usr/home && for i in *;do chsh -s bash $i;done

casidiablo · 2009-12-31 18:48:53 7
Delete all aliases for a network interface on a (Free)BSD system

The example command deletes all aliases for network interface 'em0' assuming that the aliases have netmask of 255.255.255.255 and the master IP has some other netmask (such as 255.255.255.0). See here -> http://my.galagzee.com/2009/07/22/deleting-all-network-interface-aliases/ for more on the rationale of this command.
This is sample output - yours may be different.
3

ifconfig | grep "0xffffffff" | awk '{ print $2 }' | xargs -n 1 ifconfig em0 delete

vwal · 2009-08-04 05:18:36 3
Nicely display permissions in octal format with filename

Since the original command (#1873) didn't work on FreeBSD whose stat lacks the "-c" switch, I wrote an alternative that does. This command shows also the fourth digit of octal format permissions which yields the sticky bit information. Show Sample Output
This is sample output - yours may be different.
```
-r-xr-xr-x 0555 cat
-r-xr-xr-x 0555 chflags
-r-xr-xr-x 0555 chio
-r-xr-xr-x 0555 chmod
-r-xr-xr-x 0555 cp
-r-xr-xr-x 0555 csh
-r-xr-xr-x 0555 date
-r-xr-xr-x 0555 dd
-r-xr-xr-x 0555 df
-r-xr-xr-x 0555 domainname
```
2

stat -f '%Sp %p %N' * | rev | sed -E 's/^([^[:space:]]+)[[:space:]]([[:digit:]]{4})[^[:space:]]*[[:space:]]([^[:space:]]+)/\1 \2 \3/' | rev

vwal · 2009-08-04 08:45:20 3
Dump snapshot of UFS2 filesystem, then gzip it

Opens a snapshot of a live UFS2 filesystem, runs dump to generate a full filesystem backup which is run through gzip. The filesystem must support snapshots and have a .snap directory in the filesystem root. To restore the backup, one can do zcat /path/to/adXsYz.dump.gz | restore -rf -
This is sample output - yours may be different.
2

dump -0Lauf - /dev/adXsYz | gzip > /path/to/adXsYz.dump.gz

tensorpudding · 2010-07-19 00:54:40 7
Mount a temporary ram partition

For FreeBSD
This is sample output - yours may be different.
2

mdmfs -s 256m md /mnt

QNimbus · 2012-12-22 14:25:07 6
Create a simple video contact sheet using the vcs bash script

Assumes you've downloaded Toni Corvera's vcs script (http://p.outlyer.net/vcs), have it in your PATH, and have installed the script's dependencies. Generates a video contact sheet of 24 thumbnails and 3 thumbnails per column. The bold font and white-on-black color scheme keeps the text readable at the chosen 70% JPEG compression quality, which keeps the file size at a manageable level. You can go even lower with the quality and get a good looking result.
This is sample output - yours may be different.
2

vcs -c 3 -H 220 -n 24 -dt -ds -dp -j --anonymous -O bg_heading=black -O bg_sign=black -O fg_heading=white -O fg_heading=white -O fg_sign=white -O fg_title=white -O font_heading=DejaVu-Sans-Bold -O quality=70

Negate · 2018-06-06 00:49:25 284
Kill all Zombie processes if they accept it!

Tested on FreeBSD 8.1 and CSH. The scripts works correctly but the Zombies do not die! I hope it will run and function as expected in Linux and others. Show Sample Output
This is sample output - yours may be different.
```
No output. But if you want to see the PIDs of your Zombies just use this piece:
ps -xaw -o state -o pid | grep Z | grep -v PID | awk '{print $2}'
```
1

kill -9 `ps -xaw -o state -o pid | grep Z | grep -v PID | awk '{print $2}'`

khashmeshab · 2010-10-27 07:19:52 4
Show bz compressed PF binary log
This is sample output - yours may be different.
1

bzcat ext_if.log.0.bz2 | tcpdump -n -e -tttt -r - | less

unixmonkey26415 · 2011-10-17 14:17:01 4
Kill all Zombie processes if they accept it!

just a leaner, smaller version. Love the original idea!
This is sample output - yours may be different.
0

kill -9 `ps xawo state=,pid=|sed -n 's/Z //p'`

AskApache · 2010-10-27 07:38:07 4

Converts the output of disklabel from bytes to Gigabytes on FreeBSD

This was done in csh. Show Sample Output

echo `disklabel mfid1s4 | sed -n '$p' | awk '{print $2}'` / 1024 / 1024 | bc -l

RageJello · 2012-05-04 12:48:58 4

Kill all Zombie processes one-liner

May need to substitute 'awk' for 'gawk'.
This is sample output - yours may be different.
0

ps axo state,ppid | awk '!/PPID/$1~"Z"{print $2}' | xargs -r kill -9

epixoip · 2017-12-07 00:47:12 23
Kill all Zombie processes one-liner

Did some research and found the previous command wrong, we don't kill a zombie but its parent. Just made some modifcation to khashmeshab's command.
This is sample output - yours may be different.
-4

ps -xaw -o state,ppid | grep Z | grep -v PID | awk '{ print $2 }' | xargs kill -9

terrywang · 2013-01-09 04:21:54 10

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To get the CPU temperature continuously on the desktop

There is no need for variables. I also added sleep to reduce cpu usage, however I didn't test it.

Count accesses per domain

count the times a domain appears on a file which lines are URLs in the form http://domain/resource.

yum -q list updates | tail -n+2

Binary difference of two files

Upload/download newer version of any file with less size and high speed. To remake the new file use $bspatch

back up your commandlinefu contributed commands

Use `zless` to read the content of your *rss.gz file: $ zless commandlinefu-contribs-backup-2009-08-10-07.40.39.rss.gz

view the system memory in clear text

see what's in your memory right now... sometimes you find passwords, account numbers and url's that were recently used. Anyone have a safe command to clear the memory without rebooting?

prevent accidents while using wildcards

alternative for "echo rm *.txt". Just doubletab the command you are willing to use and it will show you the affected files.

Lists unambigously names of all xml elements used in files in current directory

This set of commands was very convenient for me when I was preparing some xml files for typesetting a book. I wanted to check what styles I had to prepare but coudn't remember all tags that I used. This one saved me from error-prone browsing of all my files. It should be also useful if one tries to process xml files with xsl, when using own xml application.

Get a qrcode for a given string

Check command history, but avoid running it

!whatever will search your command history and execute the first command that matches 'whatever'. If you don't feel safe doing this put :p on the end to print without executing. Recommended when running as superuser.

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Commands tagged FreeBSD (13)

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