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Hiding and Show files on Mac OS X

These commands will mark a file as hidden or visible to Mac OS X Finder. Notice the capitol V vs the lowercase v. This will also work for directories. setfile -a V foo.bar; // This marks the file invisible setfile -a v foo.bar; // This marks the file visible I have also found that adding the following aliases are helpful: alias hide='setfile -a V' alias show='setfile -a v'
This is sample output - yours may be different.
1

setfile -a V foo.bar; setfile -a v foo.bar;

JakeCarter · 2009-08-12 17:16:03 12
grep certain file types recursively
This is sample output - yours may be different.
4

find . -name "*.[ch]" | xargs grep "TODO"

freestyler · 2009-08-12 16:53:01 5
Generate random IP addresses

It never ends Show Sample Output
This is sample output - yours may be different.
```
136.159.200.131
188.52.81.164  
67.192.148.226 
192.136.218.176
93.242.113.87  
112.209.160.94 
(... ad infinitum ...)
```
1

nmap -n -iR 0 -sL | cut -d" " -f 2

kovan · 2009-08-12 16:49:55 8
use vim to get colorful diff output

:q to quit
This is sample output - yours may be different.
23

svn diff | view -

freestyler · 2009-08-12 16:41:31 17
List path of binaries

( IFS=:; for i in $PATH; do echo $i; done; ) echo $PATH|sed -e 's/:/\n/g' # but the tr one is even better of course echo $PATH|xargs -d: -i echo {} # but this comes up with an extra blank line; can't figure out why and don't have the time :( echo $PATH|cut -d: --output-delimiter=' ' -f1-99 # note -- you have to hit ENTER after the first QUOTE, then type the second one. Sneaky, huh? echo $PATH | perl -l -0x3a -pe 1 # same darn extra new line; again no time to investigate echo $PATH|perl -pe 's/:/\n/g' # too obvious; clearly I'm running out of ideas :-)
This is sample output - yours may be different.
-17

not necessarily better, but many...!

sitaramcUnused · 2009-08-12 11:03:26 4
Get a regular updated list of zombies

to omit "grep -v", put some brackets around a single character
This is sample output - yours may be different.
6

watch "ps auxw | grep [d]efunct"

alvinx · 2009-08-12 08:11:16 4
List path of binaries
This is sample output - yours may be different.
-2

echo $PATH|awk -F: ' { for (i=1; i <= NF; i++) print $i }'

nitins · 2009-08-12 07:56:56 4
Change Windows Domain password from Linux

If you use Linux in a Windows domain and there are N days to expiry, this is how you can change it without resorting to a windows machine.
This is sample output - yours may be different.
7

smbpasswd -r <domain-server> -U <user name>

greppo · 2009-08-12 07:46:48 11
Download file with multiple simultaneous connections

`aria2c` (from the aria2 project) allows. Change -s 4 to an arbitrary number of segments to control the number of concurrent connections. It is also possible to provide multiple URLs to the same content (potentially over multiple protocols) to download the file concurrently from multiple hosts.
This is sample output - yours may be different.
8

aria2c -s 4 http://my/url

jrk · 2009-08-11 22:34:00 11
Preview of a picture in a terminal

This command allows you to see a preview of a picture via the terminal. It can be usefull when you are ssh'ing your server without X-forwarding. To have en example of the output you can get with this command see http://www.vimeo.com/3721117 Download at http://inouire.net/image-couleur.html Sources here: http://inouire.net/archives/image-couleur_source.tar.gz
This is sample output - yours may be different.
2

img test.jpg

Inouire · 2009-08-11 22:09:21 10
Get info on RAM Slots and Max RAM.
This is sample output - yours may be different.
2

dmidecode 2.9 | grep "Maximum Capacity"; dmidecode -t 17 | grep Size

lunarblu · 2009-08-11 21:23:29 4
On Mac OS X, runs System Profiler Report and e-mails it to specified address.

Replace "user@domain.com" with the target e-mail address. Thanks to alediaz for "$HOSTNAME" which is very useful when running the command with Apple Remote Desktop to multiple machines simultaneously.
This is sample output - yours may be different.
4

system_profiler | mail -s "$HOSTNAME System Profiler Report" user@domain.com

monkeymac · 2009-08-11 20:16:37 7
Move all but the newest 100 emails to a gzipped archive
This is sample output - yours may be different.
3

find $MAILDIR/ -type f -printf '%T@ %p\n' | sort --reverse | sed -e '{ 1,100d; s/[0-9]*\.[0-9]* $.*$/\1/g }' | xargs -i sh -c "cat {}&&rm -f {}" | gzip -c >>ARCHIVE.gz

maergil · 2009-08-11 20:12:15 3
ps -A

list all the processes Show Sample Output
This is sample output - yours may be different.
```
list all the process
```
-13

ps -A

xraj · 2009-08-11 16:52:59 7
Sum columns from CSV column $COL

More of the same but with more elaborate perl-fu :-)
This is sample output - yours may be different.
1

perl -F',' -ane '$a += $F[3]; END { print $a }' test.csv

coffeeaddict_nl · 2009-08-11 15:08:58 3
Testing php configuration
This is sample output - yours may be different.
6

php -i

elzapp · 2009-08-11 14:17:13 27
Testing php configuration
This is sample output - yours may be different.
1

php -r "phpinfo;"

s0x · 2009-08-11 13:39:16 4
Check if a domain is available and get the answer in just one line

Returns nothing if the domain exists and 'No match for domain.com' otherwise.
This is sample output - yours may be different.
7

whois domainnametocheck.com | grep match

Timothee · 2009-08-11 13:33:25 17
Get a regular updated list of zombies

Shows all those processes; useful when building some massively forking script that could lead to zombies when you don't have your waitpid()'s done just right.
This is sample output - yours may be different.
5

watch "ps auxw | grep 'defunct' | grep -v 'grep' | grep -v 'watch'"

coffeeaddict_nl · 2009-08-11 12:22:13 4
Sum columns from CSV column $COL
This is sample output - yours may be different.
8

awk -F ',' '{ x = x + $4 } END { print x }' test.csv

coffeeaddict_nl · 2009-08-11 12:10:33 11
Testing php configuration

Run the function phpinfo() on the shell
This is sample output - yours may be different.
2

php -r phpinfo();

amaymon · 2009-08-11 07:00:51 4
Testing php configuration

http://localhost/test.php
This is sample output - yours may be different.
-3

echo "<?php phpinfo(); ?>" >> /srv/www/htdocs/test.php

userevolution · 2009-08-11 05:56:25 13
Picture Renamer
This is sample output - yours may be different.
1

exiv2 rename *.jpg

unixmonkey5069 · 2009-08-10 22:11:19 17
Recursively Find Images, Convert to JPEGS and Delete

Simple command to convert a large number of images into jpeg-format. Will delete originals after conversion.
This is sample output - yours may be different.
4

find . -name '*'.tiff -exec bash -c "mogrify -format jpg -quality 85 -resize 75% {} && rm {}" \;

erlebnishengst · 2009-08-10 18:27:10 6
Count the number of pages of all PDFs in current directory and all subdirs, recursively
This is sample output - yours may be different.
3

find . -name \*.pdf -exec pdfinfo {} \; | grep Pages | sed -e "s/Pages:\s*//g" | awk '{ sum += $1;} END { print sum; }'

unixmonkey3987 · 2009-08-10 16:28:24 45
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drill holes on image

Remove job from crontab by commandline

The "-u USER" is optional if root user is used

Watch the progress of 'dd'

run this in another terminal, were xxxx is the process ID of the running dd process. the progress will report on the original terminal that you ran dd on

Show device drivers and their properties (Windows XP)

Show device drivers and their properties, including digital signatures /si and in table format /fo.

Remove spaces from filenames - through a whole directory tree.

Sometimes, you don't want to just replace the spaces in the current folder, but through the whole folder tree - such as your whole music collection, perhaps. Or maybe you want to do some other renaming operation throughout a tree - this command's useful for that, too. To rename stuff through a whole directory tree, you might expect this to work: for a in `find . -name '* *'`;do mv -i "$a" ${a// /_};done No such luck. The "for" command will split its parameters on spaces unless the spaces are escaped, so given a file "foo bar", the above would not try to move the file "foo bar" to "foo_bar" but rather the file "foo" to "foo", and the file "bar" to "bar". Instead, find's -execdir and -depth arguments need to be used, to set a variable to the filename, and rename files within the directory before we rename the directory. It has to be -execdir and won't work with just -exec - that would try to rename "foo bar/baz quux" to "foo_bar/baz_quux" in one step, rather than going into "foo bar/", changing "baz quux" to "baz_quux", then stepping out and changing "foo bar/" into "foo_bar/". To rename just files, or just directories, you can put "-type f" or "-type d" after the "-depth" param. You could probably safely replace the "mv" part of the line with a "rename" command, like rename 'y/ /_/' *, but I haven't tried, since that's way less portable.

improve copy file over ssh showing progress

You set the file/dirname transfer variable, in the end point you set the path destination, this command uses pipe view to show progress, compress the file outut and takes account to change the ssh cipher. Support dirnames with spaces. Merged ideas and comments by http://www.commandlinefu.com/commands/view/4379/copy-working-directory-and-compress-it-on-the-fly-while-showing-progress and http://www.commandlinefu.com/commands/view/3177/move-a-lot-of-files-over-ssh

cpu stress test

For each cpu set mask and then monitor your cpu infos. Temp,load avg. etc. For example for 2nd cpu or 2nd core taskset 0x00000002 yes > /dev/null & For example for 3rd cpu or 3rd core taskset 0x00000004 yes > /dev/null & For example for 4th cpu or 4th core taskset 0x00000008 yes > /dev/null & Monitor your cpu temp with this command if you want watch -n1 "acpi -t" Load avg. from top command top kerim@bayner.com http://www.bayner.com/

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

a function to find the fastest DNS server

http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

Mortality Countdown

watch the seconds of your life tick away - replace YYYY-mm-dd HH:MM:ss w/ your birthtime.

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