Commands by peshay

Commands by peshay (11)

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Show internet IP Address in prompt --> PS1 var
This is sample output - yours may be different.
-1

export PS1="[\u@`curl icanhazip.com` \W]$ "

peshay · 2011-11-07 14:48:16 8
copy from host1 to host2, through your host

Good if only you have access to host1 and host2, but they have no access to your host (so ncat won't work) and they have no direct access to each other.
This is sample output - yours may be different.
17

ssh root@host1 "cd /somedir/tocopy/ && tar -cf - ." | ssh root@host2 "cd /samedir/tocopyto/ && tar -xf -"

peshay · 2010-04-16 06:48:47 11
Consistent Oracle Datapump Export

Creates a consistent datapumpt export on an Oracle database with the current sequence number, while the system is running and changes happens on the database.
This is sample output - yours may be different.
0

expdp user/password FLASHBACK_SCN=$(echo -e "select current_scn from v\$database;" | sqlplus / as sysdba 2>/dev/null| grep [0-9][0-9][0-9][0-9][0-9][0-9]*)

peshay · 2009-10-01 08:55:20 3
When was your OS installed?

shows also time if its the same year or shows year if installed before actual year and also works if /etc is a link (mac os) Show Sample Output
This is sample output - yours may be different.
```
Jul 15 11:46
or
Dec 24 2006
```
5

ls -lct /etc/ | tail -1 | awk '{print $6, $7, $8}'

peshay · 2009-09-04 16:52:50 5
move a lot of files over ssh

copy files to a ssh server with gzip compression
This is sample output - yours may be different.
14

rsync -az /home/user/test user@sshServer:/tmp/

peshay · 2009-08-25 10:45:15 14
get the latest version

to download latest version of "util", maybe insert a sort if they wont be shown in right order. curl lists all files on mirror, grep your util, tail -1 will gets the one lists on the bottom and get it with wget Show Sample Output
This is sample output - yours may be different.
```
for Sun Freeware
mirror=ftp://sunsite.informatik.rwth-aachen.de/pub/mirror/ftp.sunfreeware.com
pkg=perl
curl -l $mirror/intel/10/ 2>/dev/null | grep $pkg
perl-5.8.5-sol10-intel-local.gz
perl-5.8.7-sol10-x86-local.gz
perl-5.8.8-sol10-x86-local.gz

command above would download only perl-5.8.8-sol10-x86-local.gz
```
4

mirror=ftp://somemirror.com/with/alot/versions/but/no/latest/link; latest=$(curl -l $mirror/ 2>/dev/null | grep util | tail -1); wget $mirror/$latest

peshay · 2009-08-24 15:58:31 398
Verbosely delete files matching specific name pattern, older than 15 days.
This is sample output - yours may be different.
1

find /backup/directory -name "FILENAME_*" -mtime +15 -exec rm -vf {};

peshay · 2009-08-24 07:56:14 4
for all who don't have the watch command

#Usage: watch timeinsecond "command" Show Sample Output
This is sample output - yours may be different.
```
Every 3s: ls 				 Mi 19 Aug 2009 17:27:24 CEST
file1
file2
file3
...
```
4

watch() { while test :; do clear; date=$(date); echo -e "Every "$1"s: $2 \t\t\t\t $date"; $2; sleep $1; done }

peshay · 2009-08-19 15:29:00 3
Get MX records for a domain

command is shorter, output unnecessary longer Show Sample Output
This is sample output - yours may be different.
```
foo.org mail is handled by 10 nullmx.foo.org.
```
1

host -t mx foo.org

peshay · 2009-08-14 09:55:19 4
get IPs with a DHCP lease

You can use that to create a excludefile for nmap, to find hosts, with no DHCP lease in your DHCP range. Show Sample Output
This is sample output - yours may be different.
```
192.168.0.73
192.168.0.99
192.168.0.38
192.168.0.77
192.168.0.98
192.168.0.46
192.168.0.13
```
0

egrep "^lease" /var/lib/dhcp/db/dhcpd.leases |awk '{ print $2 }'

peshay · 2009-08-14 07:31:00 3
grep certain file types recursively

-exec works better and faster then using a pipe
This is sample output - yours may be different.
3

find . -name "*.[ch]" -exec grep "TODO" {} +

peshay · 2009-08-13 06:17:22 4

What's this?

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List your installed Firefox extensions

display a one-liner of current nagios exit statuses. great with netcat/irccat

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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