Commands by linuxrawkstar

Commands by linuxrawkstar (35)

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Real full backup copy of /etc folder
This is sample output - yours may be different.
-4

cp -a /etc /destination

linuxrawkstar · 2011-10-17 16:42:35 4
Generate a list of installed packages on Debian-based systems
This is sample output - yours may be different.
3

dpkg -l

linuxrawkstar · 2011-10-17 16:26:29 4
Show the single most recently modified item in a directory

wrap it in a function if you like... lastfile () { ls -ltp | sed '1 d' | head -n1 } Show Sample Output
This is sample output - yours may be different.
```
-rw-r--r--    1 root     root           118 Dec 31  1969 default.prop
```
-2

ls -ltp | sed '1 d' | head -n1

linuxrawkstar · 2011-10-17 16:21:15 8
monitor your CPU core temperatures in real time

Watch the temperatures of your CPU cores in real time at the command line. Press CONTROL+C to end. GORY DETAILS: Your computer needs to support sensors (many laptops, for example, do not). You'll need to install the lm-sensors package if it isn't already installed. And it helps to run the `sensors-detect` command to set up your sensor kernel modules first. At the very end of the sensors-detect interactive shell prompt, answer YES to add the new lines to the list of kernel modules loaded at boot. Show Sample Output
This is sample output - yours may be different.
```
Core 0:      +52.0?C
Core 1:      +60.0?C
Core 2:      +53.0?C
Core 3:      +52.0?C
```
1

while :; do sensors|grep ^Core|while read x; do printf '% .23s\n' "$x"; done; sleep 1 && clear; done;

linuxrawkstar · 2011-04-20 06:41:57 10
add the result of a command into vi

in command mode, navigate your cursor to the line where you want the command output to appear, and hit "!!". No need to enter edit mode or even type a ":" (colon).
This is sample output - yours may be different.
12

!!command

linuxrawkstar · 2011-03-04 22:34:22 8
Count httpd processes

this version is going to work on redhat/centos/suse AND ubuntu/debian systems Show Sample Output
This is sample output - yours may be different.
```
9
```
-1

pgrep -c 'httpd|apache2'

linuxrawkstar · 2011-02-24 18:03:00 32

ARP Scan

A much quicker and (not dirtier) option. use the man page for help. On linux/ubuntu you will need to `sudo apt-get -y install arp-scan`. Show Sample Output

sudo arp-scan -l

linuxrawkstar · 2011-02-21 21:58:27 18

get memory configuration (not consumption) for all running VMware virtual machines

So your boss wants to know how much memory has been assigned to each virtual machine running on your server... here's how to nab that information from the command line while logged in to that server Show Sample Output
This is sample output - yours may be different.
```
              aa.devel.mydomain.com.vmx: 1024 M
                 devel.mydomain.com.vmx: 2048 M
                   ftp.mydomain.com.vmx: 256 M
                  mail.mydomain.com.vmx: 256 M
                         testdotnet.vmx: 3072 M
                          testjava2.vmx: 3072 M
                          testjava3.vmx: 3072 M
                           testjava.vmx: 3072 M
                   web.mydomain.com.vmx: 256 M
                              rhel5.vmx: 2048 M
```
-1

for file in $( vmrun list | grep 'vmx$' | sort ); do printf "% 40s %s M\n" $(echo "$( echo -n ${file}:\ ; grep memsize $file )" | sed -e 's/.*\///' -e 's/"//g' -e 's/memsize.=//'); done;

linuxrawkstar · 2010-11-19 06:14:11 4
convert ascii string to hex

just a bit simpler
This is sample output - yours may be different.
4

echo $ascii | perl -ne 'printf "%x", ord for split //'

linuxrawkstar · 2010-04-19 11:57:08 5
Remove VIM temp files
This is sample output - yours may be different.
-1

find ./ -name '*.sw[op]' -delete

linuxrawkstar · 2010-02-26 12:56:38 6
monitor network traffic and throughput in real time

see http://iptraf.seul.org/ for all kinds of documentation and screenshots
This is sample output - yours may be different.
4

iptraf

linuxrawkstar · 2009-12-30 15:41:21 5
copy partition table from /dev/sda to /dev/sdb

*as long as the drives are exactly the same* then this command copies the partition table on /dev/sda to /dev/sdb
This is sample output - yours may be different.
-3

sfdisk /dev/sdb <(sfdisk -d /dev/sda| perl -pi -e 's/sda/sdb/g')

linuxrawkstar · 2009-12-22 22:45:41 4
Send a local file via email

Send it the easy way, with MIME and everything handled for you by an app that knows best.
This is sample output - yours may be different.
4

mutt your@email_address.com -s "Message Subject Here" -a attachment.jpg </dev/null

linuxrawkstar · 2009-12-10 22:49:38 6
generate random password

-B flag = don't include characters that can be confused for other characters (this helps when you give someone their password for the first time so they don't cause a lockout with, for example, denyhosts or fail2ban) -s flag = make a "secure", or hard-to-crack password -y flag = include special characters (not used in the example because so many people hate it -- however I recommend it) "1 10" = output 1 password, make it 10 characters in length For even more secure passwords please use the -y flag to include special characters like so: pwgen -Bsy 10 1 output>> }&^Y?.>7Wu Show Sample Output
This is sample output - yours may be different.
```
WdUMhnv4JH
```
15

pwgen -Bs 10 1

linuxrawkstar · 2009-12-01 14:33:51 23
Remove an IP address ban that has been errantly blacklisted by denyhosts

download the denyhosts-remove script from http://www.atrixnet.com/remove-an-ip-address-ban-that-has-been-errantly-blacklisted-by-denyhosts/
This is sample output - yours may be different.
2

denyhosts-remove $IP_ADDRESS

linuxrawkstar · 2009-11-19 16:28:34 11
Remove CR LF from a text file

conversely, you can type flip -m to convert the file back to MS line endings.
This is sample output - yours may be different.
0

flip -u $FILE

linuxrawkstar · 2009-10-26 17:33:26 4
remove the last of all html files in a directory

plays with bash arrays. instead of storing the list of files in a temp file, this stores the list in ram, retrieves the last element in the array (the last html file), then removes it.
This is sample output - yours may be different.
-3

a=($(ls *html)) && a=${a[$(expr ${#a[@]} - 1)]} && rm $a

linuxrawkstar · 2009-10-12 16:40:06 5
convert vdi to vmdk (virtualbox hard disk conversion to vmware hard disk format)

Converts a .vdi file to a .vmdk file for use in a vmware virtual machine. The benefit: using this method actually works. There are others out there that claim to give you a working .vmdk by simply using the qemu-img command alone. Doing that only results in pain for you because the .vmdk file will be created with no errors, but it won't boot either. Be advised that these conversions are very disk-intensive by nature; you are probably dealing with disk images several gigabytes in size. Once finished, the process of using the new .vmdk file is left as an exercise to the reader. Show Sample Output
This is sample output - yours may be different.
```
VirtualBox Command Line Management Interface Version 2.2.4
(C) 2005-2009 Sun Microsystems, Inc.
All rights reserved.

Converting image "winxp.vdi" with size 32212254720 bytes (30720MB) to raw...

(VMDK) image open: flags=0x2 filename=winxp.vmdk
```
10

VBoxManage internalcommands converttoraw winxp.vdi winxp.raw && qemu-img convert -O vmdk winxp.raw winxp.vmdk && rm winxp.raw

linuxrawkstar · 2009-10-12 16:23:37 5
Transforms a file to all uppercase.

same, except it works on any OS with Perl installed. DOS, Windose, whatever
This is sample output - yours may be different.
-2

perl -pi -e 's/([[:lower:]]+)/uc $1/gsex' file

linuxrawkstar · 2009-10-08 14:18:50 3
List dot-files and dirs, but not . or ..
This is sample output - yours may be different.
7

ls -A

linuxrawkstar · 2009-09-29 15:22:04 7
ping a host until it responds, then play a sound, then exit

After this, just type: beepwhenup You need to install "beep" before this would make the beep sound. Save it in your .profile if you want to use it later WARNING: this command won't exit until it is successful. You won't be able to CONTROL+C out of it.
This is sample output - yours may be different.
2

beepwhenup () { echo 'Enter host you want to ping:'; read PHOST; if [[ "$PHOST" == "" ]]; then exit; fi; while true; do ping -c1 -W2 $PHOST 2>&1 >/dev/null; if [[ "$?" == "0" ]]; then for j in $(seq 1 4); do beep; done; ping -c1 $PHOST; break; fi; done; }

linuxrawkstar · 2009-09-24 18:11:10 7
Generate a Universally Unique Identifier (UUID)

http://en.wikipedia.org/wiki/Universally_Unique_Identifier http://www.ossp.org/pkg/lib/uuid/ You'll first need to install the uuid package. Available immediately from apt in Ubuntu, Debian, or other myriad Debian variants. You could always compile it from source as well. Show Sample Output
This is sample output - yours may be different.
```
bfcca18a-8857-11de-bdc3-0024e80e2d83
```
-1

uuid

linuxrawkstar · 2009-08-14 14:02:37 8
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 Show Sample Output
This is sample output - yours may be different.
```
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 20487    0 20487    0     0  18344      0 --:--:--  0:00:01 --:--:-- 97557
```
10

curl http://www.commandlinefu.com/commands/by/<your username>/rss|gzip ->commandlinefu-contribs-backup-$(date +%Y-%m-%d-%H.%M.%S).rss.gz

linuxrawkstar · 2009-08-10 12:43:33 38
Get a list of all your VirtualBox virtual machines by name and UUID from the shell

A similar command that lists only the currently running VMs is thus: VBoxManage list runningvms ...the above showing a list of VMs by name and UUID in the same format as the "$ VBoxManage list vms" command Show Sample Output
This is sample output - yours may be different.
```
VirtualBox Command Line Management Interface Version 2.2.4
(C) 2005-2009 Sun Microsystems, Inc.
All rights reserved.

"winxp-ie6" {487b8e10-e2f8-480c-a0be-a20b51d86848}
"winxp-ie7" {b5a97304-de94-4a6c-8d7c-88fa9d9054e0}
"winxp-ie8" {cb6f9885-1f27-479d-aea3-2b8b96deb628}
```
3

VBoxManage list vms

linuxrawkstar · 2009-08-07 12:43:04 4
run a VirtualBox virtual machine without a gui

you can launch a VirtualBox VM from the command line using VBoxManage, but that invokes it in a gui environment. If you want to just fire off your VM in the background, use VBoxHeadless as shown. To get the names and UUIDs of your VirtualBox VMs, type: VBoxManage list
This is sample output - yours may be different.
5

VBoxHeadless -s <name|uuid>

linuxrawkstar · 2009-08-07 12:36:32 4
1 2 >

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List your installed Firefox extensions

Find C/C++ source files

Find C/C++ source files and headers in the current directory.

list files recursively by size

View ~/.ssh/known_hosts key information

Will return the SSH server key information for each host you have in your ~/.ssh/known_hosts file, including key size, key fingerprint, key IP address or domain name, and key type.

List out classes in of all htmls in directory

Lists out all classes used in all *.html files in the currect directory. usefull for checking if you have left out any style definitions, or accidentally given a different name than you intended. ( I have an ugly habit of accidentally substituting camelCase instead of using under_scores: i would name soemthing counterBox instead of counter_box) WARNING: assumes you give classnames in between double quotes, and that you apply only one class per element.

Automator Bash script to create Clean zips in MacOS Finder without __MACOSX metadata

Finder compresses to ZIP but always includes extraneous metadata files (__MACOSX and .DS_Store) files and folders that may confuse other programs. One alternative is creating them and then editing the ZIP. This can work standalone or in an automator script accepting multiple selections (files or folders) and creating one zip per argument/selected file without that metada.

convert single digit to double digits

Uses 'rename' to pad zeros in front of first existing number in each filename. The "--" is not required, but it will prevent errors on filenames which start with "-". You can change the "2d" to any number you want, equaling the total numeric output: aka, 4d = ????, 8d = ????????, etc. I setup a handful of handy functions to this effect (because I couldn't figure out how to insert a var for the value) in the form of 'padnum?', such as: padnum5 () { /usr/bin/rename 's/\d+/sprintf("%05d",$&)/e' -- $@ } Which would change a file "foo-1.txt" to "foo-00001.txt"

fast access to any of your favorite directory.

example: -------------------------------------------------------------------------------------------- user@ubuntu:~/workspace/SVN/haystak-repos/trunk/internal/src$ addpi -------------------------------------------------------------------------------------------- Now that directory is in the list of fast access directories. You can switch to it anytime like this: -------------------------------------------------------------------------------------------- user@ubuntu:~$ pi internal` user@ubuntu:~/workspace/SVN/haystak-repos/trunk/internal/src$ -------------------------------------------------------------------------------------------- Please note the backquote ( the symbol that shares its key with ~ in the keyboard ) pi will switch you to that directory. To see the list of all fast access directories you have to say "cat ~/.pi"

List recorded formular fields of Firefox

When you fill a formular with Firefox, you see things you entered in previous formulars with same field names. This command list everything Firefox has registered. Using a "delete from", you can remove anoying Google queries, for example ;-)

Generate diff of first 500 lines of two files

Useful for massive files where doing a full diff would take too long. This just runs diff on the first 500 lines of each. The use of subshells to feed STDIN is quite a useful construct.

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