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View SuSE version

Displays SuSE release information Show Sample Output
This is sample output - yours may be different.
```
SUSE LINUX Enterprise Server 9 (x86_64)
VERSION = 9
PATCHLEVEL = 4
```
-3

cat /etc/SuSE-release

sharfah · 2009-05-20 17:28:12 20
combine `mkdir foo && cd foo` into a single function `mcd foo`

I find that I create a directory and then cd into that directory quite often. I found this little function on the internets somewhere and thought I'd share it. Just copy-paste it into you ~/.bash_profile and then `source ~/.bash_profile`. Show Sample Output
This is sample output - yours may be different.
```
user@home:~$ mcd newdirectory
user@home:newdirectory $
```
4

function mcd() { [ -n "$1" ] && mkdir -p "$@" && cd "$1"; }

thebillywayne · 2009-05-20 16:41:48 8
get the list of temps for your hard-drives

get a list of temps of your hard-drives. Show Sample Output
This is sample output - yours may be different.
```
31 31 31 29
```
0

hddtemp /dev/sda /dev/sdb /dev/hda /dev/hdb | gawk '{print $NF}' | perl -n -e '$_ =~ s/(\d+)/print "$1 "/eg }{ print "\n"'

microft · 2009-05-20 16:01:58 4
Prevent shell autologout

Unset TMOUT or set it to 0 in order to prevent shell autologout. TMOUT is the number of seconds after which the present shell will be killed if it has been idle for that long.
This is sample output - yours may be different.
7

unset TMOUT

sharfah · 2009-05-20 14:57:50 12
disable history for current shell session

this will cause any commands that you have executed in the current shell session to not be written in your bash_history file upon logout
This is sample output - yours may be different.
18

unset HISTFILE

grokskookum · 2009-05-20 14:46:18 20
Shows the torrent file name along with the trackers url

Replace * with any filename matching glob or an individual filename
This is sample output - yours may be different.
2

grep -ao -HP "http://[^/]*/" *

binarycodes · 2009-05-20 14:45:34 35
Skipping tests in Maven

the maven.test.skip property can be added to other goals too.
This is sample output - yours may be different.
-4

mvn -Dmaven.test.skip=true install

sharfah · 2009-05-20 12:55:10 6
Creating a Maven project

This will create a new directory called MyProject with a pom.xml and the following tree structure: MyProject |-->pom.xml |-->src | |-->main | | |-->java | | | |-->my | | | | |-->work | | | | | |-->App.java | |-->test | | |-->java | | | |-->my | | | | |-->work | | | | | |-->AppTest.java
This is sample output - yours may be different.
-5

mvn archetype:create -DgroupId=my.work -DartifactId=MyProject

sharfah · 2009-05-20 12:53:23 4
Go (cd) directly into a new temp folder

This command create a new temp directory using mktemp (to avoid collisions) and change the current working directory to the created directory. Show Sample Output
This is sample output - yours may be different.
```
/tmp$ cd "$(mktemp -d)"
/tmp/tmp.gZIwreyWQp$
```
8

cd "$(mktemp -d)"

Weboide · 2009-05-20 11:48:12 11
List files recursively sorted by modified time
This is sample output - yours may be different.
0

find /home/fizz -type f -printf '%TY-%Tm-%Td %TT %p\n' | sort

fizz · 2009-05-20 10:45:39 6
user 'tr' to convert mixed case in a file to lower case

convert mixed case in a file to lower case
This is sample output - yours may be different.
2

tr "[:upper:]" "[:lower:]" < file

gordonrgw · 2009-05-20 09:21:02 6
Break lines after, for example 78 characters, but don't break within a word/string

Per default, linux/unix shells are configured with a width of 80 characters. If you like to edit a phrase or string on a line with more than 80 characters it might take long to go there (for example a line with 1000 characters and you like to edit the 98th word which is character 598-603). Maybe you might wish to use 78 characters, because if you forward the text via mail and the text will be quoted (2 extra characters at the beginning to the line "> "), you use 80 characters, otherwise 82, which are lame.
This is sample output - yours may be different.
3

fold -w 78 -s file-to-wrap

GeckoDH · 2009-05-19 19:33:10 5
Extract an audio track from a multilingual video file, for a specific language.
This is sample output - yours may be different.
0

mencoder -aid 2 -oac copy file.avi -o english.mp3

prayer · 2009-05-19 19:24:43 7
Notify me when users log in

Notifyme is a program that listen in background for users login, and report on login and logout. Users can be specified from a list or in a ~/notify.rc file. -C options force to display messages on the center of the screen.See man notifyme for more details. Part of notifyme package, tested on Debian. Show Sample Output
This is sample output - yours may be different.
```
root from :0.0 arrived!
```
4

notifyme -C `cat /etc/passwd | cut -d: -f1`

servermanaged · 2009-05-19 19:17:05 10
Share a 'screen'-session

Ater person A starts his screen-session with `screen`, person B can attach to the srceen of person A with `screen -x`. Good to know, if you need or give support from/to others.
This is sample output - yours may be different.
13

screen -x

GeckoDH · 2009-05-19 19:10:52 8
Unix security checker

From man tiger : Tiger is a package consisting of Bourne Shell scripts, C code and data files which is used for checking for security problems on a UNIX system. It scans system configuration files, file systems, and user configuration files for possible security problems and reports them. Show Sample Output
This is sample output - yours may be different.
```
Tiger security scripts *** 3.2.2, 2007.08.28.00.00 ***
20:57> Beginning security report for hob.juniper.
20:57> Starting file systems scans in background...
20:57> Checking password files...
20:57> Checking group files...
20:57> Checking user accounts...
20:58> Checking .rhosts files...
20:58> Checking .netrc files...
20:58> Checking ttytab, securetty, 
.....
```
-3

tiger

servermanaged · 2009-05-19 19:07:11 16
Top like mysql monitor

mytop is a top like monitor for displaying Mysql server statistic and performance. Part of mytop package ,tested on Debian.
This is sample output - yours may be different.
0

mytop --prompt

servermanaged · 2009-05-19 19:04:57 5
Simplification of "sed 'your sed stuff here' file > file2 && mv file2 file"
This is sample output - yours may be different.
5

sed -i 'your sed stuff here' file

Keruspe · 2009-05-19 15:35:42 5
Function that counts recursively number of lines of all files in specified folders
This is sample output - yours may be different.
4

count() { find $@ -type f -exec cat {} + | wc -l; }

Keruspe · 2009-05-19 15:02:51 9
Find last reboot time

Displays time of last system boot Show Sample Output
This is sample output - yours may be different.
```
system boot  May 10 03:33
```
16

who -b

sharfah · 2009-05-19 11:52:54 24
View memory utilisation

Report memory and swap space utilization statistics e.g. memory free/used, swap free/used
This is sample output - yours may be different.
-2

sar -r

sharfah · 2009-05-19 11:47:38 10
Check if a process is running

Send signal 0 to the process. The return status ($?) can be used to determine if the process is running. 0 if it is, non-zero otherwise.
This is sample output - yours may be different.
5

kill -0 [pid]

sharfah · 2009-05-19 11:37:20 8
Create a tar.gz in a single command

Where foodir is the directory you want to zip up.
This is sample output - yours may be different.
-7

tar cvf - foodir | gzip > foo.tar.gz

sharfah · 2009-05-19 11:33:51 14
Extract tar.gz in a single command
This is sample output - yours may be different.
-12

gunzip < foo.tar.gz | tar xvf -

sharfah · 2009-05-19 11:33:02 11
Backup your OpenWRT config (only the config, not the whole system)

You only have to fill in your administrative account and password, and the router FQDN! I recommand to execute this command not over the internet, because there is no encryption (the username and password will be transmitted in plaintext!)
This is sample output - yours may be different.
3

curl -d 'username=root&password=your-good-password' "http://router/cgi-bin/luci/admin/system/backup?backup=kthxbye" > `date +%Y%d%m`_config_backup.tgz

GeckoDH · 2009-05-19 11:32:30 7
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Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Export MySQL query as .csv file

This command converts a MySQL query directly into a .csv (Comma Seperated Value)-file.

Find out how old a web page is

I used to use the Firefox "View page info" feature a lot to determine how stale the web page I was looking at was. Now that I use mostly Chrome I miss that feature, so here is a command line alternative using wget. The -S says to display the server response, the --spider says to not download any files/pages, just fetch the header. The output goes to stderr, so to grep it you use 2>&1 to combine the stderr stream with stdout, the pipe that to grep for Last-Modified. You can use curl instead if you have it installed, like this: $ curl --head -s http://osswin.sourceforge.net | grep Mod

Find the package that installed a command

Replace spaces in a filename with hyphens

As long as you have perl based rename. You can check: =$ rename --help Unknown option: help Usage: rename [-v] [-n] [-f] perlexpr [filenames] That's the good one.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Temporarily ignore mismatched SSH host key

This command will bypass checking the host key of the target server against the local known_hosts file. When you SSH to a server whose host key does not match the one stored in your local machine's known_hosts file, you'll get a error like " WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" that indicates a key mismatch. If you know the key has legitimately changed (like the server was reinstalled), a permanent solution is to remove the stored key for that server in known_hosts. However, there are some occasions where you may not want to make the permanent change. For example, you've done some port-forwarding trickery with ssh -R or ssh -L, and are doing ssh user@localhost to connect over the port-forwarding to some other machine (not actually your localhost). Since this is usually temporary, you probably don't want to change the known_hosts file. This command is useful for those situations. Credit: Command found at http://linuxcommando.blogspot.com/2008/10/how-to-disable-ssh-host-key-checking.html. Further discussion of how it works is there also. Note this is a bit different than command #5307 - with that one you will still be prompted to store the unrecognized key, whereas this one won't prompt you for the key at all.

List of reverse DNS records for a subnet

This command uses nmap to perform reverse DNS lookups on a subnet. It produces a list of IP addresses with the corresponding PTR record for a given subnet. You can enter the subnet in CDIR notation (i.e. /24 for a Class C)). You could add "--dns-servers x.x.x.x" after the "-sL" if you need the lookups to be performed on a specific DNS server. On some installations nmap needs sudo I believe. Also I hope awk is standard on most distros.

Install a new kernel in Manjaro linux

00 is the number of the linux kernel e.g. linux39

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

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