Commands by wwest4

Commands by wwest4 (37)

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Monitor Linux/MD RAID Rebuild
This is sample output - yours may be different.
3

watch -n 5 -d cat /proc/mdstat

wwest4 · 2009-03-03 21:38:50 31
Label EXT2/EXT3 File System
This is sample output - yours may be different.
2

e2label /dev/vg0/lv0 MyFiles

wwest4 · 2009-02-28 02:34:46 9
Resize A Mounted EXT3 File System

Live extension of an ext3 file system on logical volume $v by 200GB without the need to unmount/remount. Requires that you have 1) a version of resize2fs that contains code merged from ext2online, and 2) kernel support for online resizing. (e.g. RHEL 5)
This is sample output - yours may be different.
4

v=/dev/vg0/lv0; lvextend -L+200G $v && resize2fs $v

wwest4 · 2009-02-28 02:30:49 8
HTTP redirect

any HTTP requests to the machine on the specified port will be redirected to http://www.whatevs.com... quick, dirty, works fine for sites w/
This is sample output - yours may be different.
4

while [ 0 ]; do echo -e "HTTP/1.1 302 Found\nLocation: http://www.whatevs.com/index.html" | nc -vvvv -l -p 80; done

wwest4 · 2009-02-19 18:04:01 10
flush cached dns lookups

Windows
This is sample output - yours may be different.
-3

ipconfig /flushdns

wwest4 · 2009-02-18 21:23:36 5
relabel current konsole tab

usage: renam in a script you must replace $PPID with $(awk '{print $4}' /prod/$PPID/stat) Show Sample Output
This is sample output - yours may be different.
```
usage: rk "New Console Label"
```
1

alias rk='d=$(dcop|grep $PPID) && s=$(dcop $d konsole currentSession) && dcop $d $s renameSession'

wwest4 · 2009-02-14 00:02:43 10
Mortality Countdown

watch the seconds of your life tick away - replace YYYY-mm-dd HH:MM:ss w/ your birthtime.
This is sample output - yours may be different.
2

while [ 0 ]; do expr 2365200000 \- `date +%s` \- `date --date "YYYY-mm-dd HH:MM:ss" +%s`; sleep 1; clear; done

wwest4 · 2009-02-13 20:02:37 22
bash chop

similar to perl chop()
This is sample output - yours may be different.
0

alias chop="tr -d '\r\n'"

wwest4 · 2009-02-13 01:44:11 30
KDE Mixer Master Mute/Unmute

arguably better than using the driver interface. lots of potentially cool stuff to be done w/ the dcop client.
This is sample output - yours may be different.
2

alias mute="dcop kmix Mixer0 toggleMasterMute ; dcop kmix Mixer0 masterMute | sed -e 's/true/muted/' -e 's/false/unmuted/' "

wwest4 · 2009-02-12 04:56:33 10
ping a range of IP addresses

nmap accepts a wide variety of addressing notation, multiple targets/ranges, etc.
This is sample output - yours may be different.
16

nmap -sP 192.168.1.100-254

wwest4 · 2009-02-11 20:44:43 26
escape any command aliases

e.g. if rm is aliased for 'rm -i', you can escape the alias by prepending a backslash: rm [file] # WILL prompt for confirmation per the alias \rm [file] # will NOT prompt for confirmation per the default behavior of the command
This is sample output - yours may be different.
101

\[command]

wwest4 · 2009-02-11 19:34:21 57
Removes file with a dash in the beginning of the name
This is sample output - yours may be different.
9

rm -- --myfile

wwest4 · 2009-02-11 19:24:22 15
Get MX records for a domain
This is sample output - yours may be different.
6

dig foo.org mx +short

wwest4 · 2009-02-05 21:29:14 27
JVM Garbage Collector Stats
This is sample output - yours may be different.
0

jstat -gc [jvmpid]

wwest4 · 2009-02-05 21:23:07 17
Convert Windows/DOS Text Files to Unix

converts non-ISO dos text files for use on unix systems.
This is sample output - yours may be different.
-1

dos2unix dostxt unixtxt

wwest4 · 2009-02-05 21:11:43 18
Reset the time stamps on a file

...changes modify time and access time. also: touch -r [file1] [file2] # make file2 timestamp match file1
This is sample output - yours may be different.
0

touch -acm yyyymmddhhMM.ss [file]

wwest4 · 2009-02-05 21:07:09 18
Show Shared Library Mappings

shows which shared lib files are pointed to by the dynamic linker.
This is sample output - yours may be different.
3

ldconfig -p

wwest4 · 2009-02-05 21:02:59 18
Ride another SSH agent

Must be done as root - will cause subsequent ssh connections to use the identities available via the [user]'s agent socket. Show Sample Output
This is sample output - yours may be different.
```
# export SSH_AUTH_SOCK=`find /tmp/ssh* -type s -user joeuser -mtime -1 | head -1`
linux:/tmp/ssh-WjKuI4788 # ssh-add -l
2048 00:11:22:33:44:55:66:77:88:99:AA:BB:CC:DD:EE:FF /home/joeuser/.ssh/id_rsa (RSA)
# ssh joeuser@remote
...
joeuser@remote>
```
1

export SSH_AUTH_SOCK=`find /tmp/ssh* -type s -user [user] -mtime -1 | head -1`

wwest4 · 2009-02-05 20:55:41 16
Binary search/replace

Replaces A with B in binary file "orig" and saves the result to "new". You must have the hex representations of A & B. Try od: echo -e "A\c" | od -An -x
This is sample output - yours may be different.
3

xxd < orig | sed 's/A/B/' | sed 's/HEXA/HEXB/' | xxd -r > new

wwest4 · 2009-02-05 20:25:04 62
"I Feel Lucky" for Google Images

prompts for a search term and then pulls down the first result from google images
This is sample output - yours may be different.
2

echo -n "search> ";read QUERY && wget -O - `wget -O - -U "Mozilla/5.0" "http://images.google.com/images?q=${QUERY}" 2>/dev/null |sed -e 's/","http/\n","http/g' |awk -F \" '{print $3}' |grep -i http: |head -1` > "$QUERY"

wwest4 · 2009-02-05 19:50:53 31
List files in an RPM package
This is sample output - yours may be different.
0

rpm --query --filesbypackage [packagename]

wwest4 · 2009-02-05 19:35:29 22
List RPM packages installed in current tree

shows all RPMs with files in the current directory & its subdirectories.
This is sample output - yours may be different.
0

find $PWD -exec rpm --query -f {} \; | sort -u | grep -v "not owned"

wwest4 · 2009-02-05 19:33:43 21
Periodic Log Deletion

deletes logs not modified in over [#] days - modify to compress or move, as needed
This is sample output - yours may be different.
1

find /path/to/dir -type f -mtime +[#] -exec rm -f {} \;

wwest4 · 2009-02-05 19:24:13 17
Create a DOS floppy image

mount with: mount -t msdos -o loop ./floppy.img /tmp/mnt
This is sample output - yours may be different.
2

dd if=/dev/zero bs=1024 count=1440 > floppy.img && mkdosfs floppy.img

wwest4 · 2009-02-05 18:56:55 46
Test for Weak SSL Ciphers

...if you get a certificate back, the server is accepting weak SSL ciphers
This is sample output - yours may be different.
6

openssl s_client -connect [host]:[sslport] -cipher LOW

wwest4 · 2009-02-05 18:37:50 39
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shell function which allows you to tag files by creating symbolic links directories in a 'tags' folder.

shell function which allows you to tag files by creating symbolic links directories in a 'tags' folder. The tag function takes a tag name as its first argument, then a list of files which take that tag. The directory $HOME/tags/tagname will then hold symbolic links to each of the tagged files. This function was modified from bartonski's (http://www.commandlinefu.com/commands/view/10216) inspired by tmsu (found at https://bitbucket.org/oniony/tmsu/wiki/Home) with readlink function by flxndn (http://www.commandlinefu.com/commands/view/10222). Example: $ tag dog airedale.txt .shizturc weimeraner.pl This will create $HOME/tags/dog which contains symbolic links to airedale.txt .shizturc and weimeraner.pl

TCPDUMP & Save Capture to Remote Server w/ GZIP

NOTE: When opening the files you might need to strip the very top line with notepad++ as its a mistake header This is useful when the local machine where you need to do the packet capture with tcpdump doesn?t have enough room to save the file, where as your remote host does tcpdump -i eth0 -w - | ssh forge.remotehost.com -c arcfour,blowfish-cbc -C -p 50005 "cat - | gzip > /tmp/eth0.pcap.gz" Your @ PC1 doing a tcpdump of PC1s eth0 interface and its going to save the output @ PC2 who is called save.location.com to a file /tmp/eth0-to-me.pcap.gz again on PC2 More info @: http://www.kossboss.com/linuxtcpdump1

List all active access_logs for currently running Apache or Lighttpd process

Ever logged into a *nix box and needed to know which webserver is running and where all the current access_log files are? Run this one liner to find out. Works for Apache or Lighttpd as long as CustomLog name is somewhat standard. HINT: works great as input into for loop, like this: $ for i in `lsof -p $(netstat -ltpn|awk '$4 ~ /:80$/ {print substr($7,1,index($7,"/")-1)}')| awk '$9 ~ /access.log$/ {print $9| "sort -u"}'` ; do echo $i; done Very useful for triage on unfamiliar servers!

Do quick arithmetic on numbers from STDIN with any formatting using a perl one liner.

Good for summing the numbers embedded in text - a food journal entry for example with calories listed per food where you want the total calories. Use this to monitor and keep a total on anything that ouputs numbers.

list block devices

Shows all block devices in a tree with descruptions of what they are.

Get the Last tweet (Better than Twitter feed rrs)

I was using some twitter bots and twitter bloks my IP. Now im using some proxys and i use these command to validate the tweet was published.

Create named LUKS encrypted volume

You need to be root to do this. So check the command before running it. You enter the same password for Enter LUKS passphrase: Verify passphrase: Enter passphrase for /dev/loopn: ___ You can then copy the .img file to somewhere else. Loop it it with losetup -f IMAGENAME.img and then mount it with a file manager (eg nemo) or run mount /dev/loopn /media/mountfolder Acts similar to a mounted flash drive

grep (or anything else) many files with multiprocessor power

Parallel does not suffer from the risk of mixing of output that xargs suffers from. -j+0 will run as many jobs in parallel as you have cores. With parallel you only need -0 (and -print0) if your filenames contain a '\n'. Parallel is from https://savannah.nongnu.org/projects/parallel/

list block devices

Shows all block devices in a tree with descruptions of what they are.

Find the package that installed a command

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