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Reorder file with max 100 file per folder

Take a folder full of files and split it into smaller folders containing a maximum number of files. In this case, 100 files per directory. find creates the list of files xargs breaks up the list into groups of 100 for each group, create a directory and copy in the files Note: This command won't work if there is whitespace in the filenames (but then again, neither do the alternative commands :-)
This is sample output - yours may be different.
-1

files -type f | xargs -n100 | while read l; do mkdir $((++f)); cp $l $f; done

flatcap · 2011-02-15 23:15:16 4
view someone's twitter stream from terminal
This is sample output - yours may be different.
-1

grabtweets() { curl -s -o $GT_TMP twitter.com/$1 | cat $GT_TMP | grep entry-content | sed -e :loop -e 's/<[^>]*>//g;/</N;//bloop' | sed 's/^[ \t]*//'; }

gl101 · 2011-05-04 21:49:08 5
Get Google PageRank

via http://pagerank.bz/
This is sample output - yours may be different.
-1

curl pagerank.bz/yourdomain.com

random · 2011-09-02 09:01:52 3

addprinc

k add principle Show Sample Output

-1

kadmin -p admin@NOC.NBIRN.NET -q "addprinc -randkey host/host"

sysbot · 2009-02-05 23:20:14 14

Find all symlinks that link to directories

This will list all symlinks that are directories under the current directory. This will help you distinguish them from regular files.
This is sample output - yours may be different.
-1

ls -l $(find ./ -type l | perl -ne 'chomp; if (-d) { print "$_\n" }')

rwadkins · 2010-07-16 19:31:28 3
List the size (in human readable form) of all sub folders from the current location
This is sample output - yours may be different.
-1

du -hs *

crishoj · 2011-01-11 16:26:28 3
ktadd
This is sample output - yours may be different.
-1

kadmin -p admin@NOC.NBIRN.NET -q "ktadd -k /etc/krb5.keytab host/hostname"

sysbot · 2009-02-05 23:21:27 17
prints line numbers

There's too many options to number, My curiosity has forced me to make it using only sed. Maybe useful... or not... :-S
This is sample output - yours may be different.
-1

sed '/./=' infile | sed '/^/N; s/\n/ /'

glaudiston · 2009-12-10 16:24:56 6
Get Google Reader unread count

Get Google Reader unread count from the command line. You'll have to define your auth token with $auth Or use: curl -s -H "Authorization: GoogleLogin auth=$(curl -sd "Email=$email&Passwd=$password&service=reader" https://www.google.com/accounts/ClientLogin | grep Auth | sed 's/Auth=$.*$/\1/')" "http://www.google.com/reader/api/0/unread-count?output=json" | tr '{' '\n' | sed 's/.*"count":$[0-9]*$,".*/\1/' | grep -E ^[0-9]+$ | tr '\n' '+' | sed 's/$.*$+/\1\n/' | bc Show Sample Output
This is sample output - yours may be different.
```
33
```
-1

curl -s -H "Authorization: GoogleLogin auth=$auth" "http://www.google.com/reader/api/0/unread-count?output=json" | tr '{' '\n' | sed 's/.*"count":$[0-9]*$,".*/\1/' | grep -E ^[0-9]+$ | tr '\n' '+' | sed 's/$.*$+/\1\n/' | bc

matthewbauer · 2010-02-11 00:42:57 7
20char long alpahnumeric "password"

20characters long alpahnumeric "password" Show Sample Output
This is sample output - yours may be different.
```
5698d846bfe078d67aef43fc0eebe4233401ad23
```
-1

head -c20 /dev/urandom | xxd -ps

opexxx · 2013-07-16 10:14:21 8
backup file with tar

backup your files in tar archive + timestamp of backup Show Sample Output
This is sample output - yours may be different.
```
medamin@inismhost:~/Documents/Developement/conf/bind9$ tar -cvf bind9-config-`date +%s`.tar *
db.192
db.192~
db.host.go
db.host.go~
named.conf.local
named.conf.local~
named.conf.options
named.conf.options~
medamin@inismhost:~/Documents/Developement/conf/bind9$
```
-1

tar -cvf bind9-config-`date +%s`.tar *

Fuonum · 2014-10-29 05:15:15 9
Login via SSH
This is sample output - yours may be different.
-1

ssh -l <username> <server>

bronskyb · 2011-05-05 11:38:56 4
Netcat ftp honeypot centos linux (use port 22 for SSH)

[root@dhcppc1 windows]# cat /var/log/honeylog.log Connection from 192.168.1.71 port 21 [tcp/ftp] accepted Connection from 192.168.1.65 port 21 [tcp/ftp] accepted [root@dhcppc1 windows]# nc 192.168.1.65 21 220 ProFTPD 1.3.3c Server [ProFTPD] FAILED FTP ATTEMPT - PORT 21 *You can not run it if you have activated the ftp server.
This is sample output - yours may be different.
-1

while [ 1 ]; do echo -e "220 ProFTPD 1.3.3c Server [ProFTPD] \nFAILED FTP ATTEMPT - PORT 21" | nc -vvv -l 192.168.1.65 21 >> /var/log/honeylog.log 2>> /var/log/honeylog.log; done

xmuda · 2013-07-16 19:05:37 6
Check out hijacked files in clearcase
This is sample output - yours may be different.
-1

cleartool co -nc `cleartool ls -recurse | grep "hijacked" | sed s/\@\@.*// | xargs`

ultrahax · 2009-02-06 00:03:51 51
kalarm 1 per minute simplest e-mail beacom for Geovision surveillance DVR

I have a custmer's Geovision DVR installed on a closed proxi (only logme-in reaches it). I have to check for reliability but logmein hangs and is too slow a process I made the Geovision software send e-mail every minute to the www.spam.la site. All this script does is to retrieve the e-mail header from spam.la ( no login!), filtering sender, stopping at the first occurrence of the word "secs" ( the age of the last e-mail ). The result is the age of the sender's last e-mail, tiny published on top of my screen once a minute. I can refresh www.spam.la via web browser, but have other things to do. I use it inside Kalarm ( kde task schedule ) set to 1 minute repeat. It can be done without kalarm, using Watch outside the script. Try it out now using my account = geo1 ( change sender by geo1 in this script) Needs curl , osd-bin
This is sample output - yours may be different.
-1

curl http://www.spam.la/?f=sender | grep secs| awk '{print; exit}' | osd_cat -i 40 -d 30 -l 2

m33600 · 2009-11-12 21:33:06 5
Echo exit status (a.k.a. return code)

I often find it useful to know what the exit status for a program was. This can be helpful when looking up errors by exit status or when scripting frequent commands. Taken from http://www.faqs.org/docs/abs/HTML/exit-status.html Show Sample Output
This is sample output - yours may be different.
```
echo hello
echo $?    # Exit status 0 returned because command executed successfully.
0
ls foo
echo $?    # Exit status 2 returned because command failed (value depends on command, see man page).
2
```
-1

echo $?

lucasrangit · 2011-07-27 15:34:20 3
sets desktop background using zenity

Assuming you have zenity installed, and assuming that you keep your backgrounds in ~/backgrounds, then this should work for you! :)
This is sample output - yours may be different.
-1

zenity --list --width 500 --height 500 --column 'Wallpapers' $(ls) | xargs xsetbg -center -smooth -fullscreen

TheShadowFog · 2011-11-15 02:44:48 4
free some harddrive space by garbage collecting in all your git repos

Assumes you've cd'd to the folder in which all your git repos reside; you could run it from ~ without -maxdepth, although that might make find take quite a while longer. If you have several processor cores, but not that much ram, you might want to run git config --global pack.threads 1 first, since gc-ing can eat lots of ram. Show Sample Output
This is sample output - yours may be different.
```
Counting objects: 1969, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (579/579), done.
Writing objects: 100% (1969/1969), done.
Total 1969 (delta 1334), reused 1969 (delta 1334)
Counting objects: 12491, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (2997/2997), done.
Writing objects: 100% (12491/12491), done.
Total 12491 (delta 9355), reused 12491 (delta 9355)
```
-1

find . -maxdepth 2 -type d -name '.git' -print0 | while read -d ''; do (cd "$REPLY"; git gc); done

unhammer · 2012-11-07 08:38:33 4
Import an entire directory into clearcase
This is sample output - yours may be different.
-1

ct mkelem -nc `find ./ -name "*" | xargs`

ultrahax · 2009-02-06 00:04:31 46
Windows person acting like an idiot in Linux?

Is there somebody that uses Windows a lot that keeps messing up your Linux machine? Press Ctrl+Alt+F1-F6 and run this command after logging into a text shell!
This is sample output - yours may be different.
-1

export PS1="C:\\>"; clear

ThePCKid · 2011-06-18 17:52:42 5
bash function to "highlight" tabs and linebreaks

I don't think it's possible to give a (background) colour to the tab itself, since a tab is, IIUC, simply a command to the terminal to move to the right. Nevertheless, this "highlighting" can be helpful when working with tab-separated files. Show Sample Output
This is sample output - yours may be different.
```
$ echo -e 'foo\tbar\nfie\tfum'|hl-nonprinting 
foo&#9657;    bar&#8267;
fie&#9657;    fum&#8267;
```
-1

hl-nonprinting () { local C=$(printf '\033[0;36m') R=$(printf '\033[0m'); sed -e "s/\t/${C}▹&$R/g" -e "s/$/${C}⁋$R/";}

unhammer · 2012-11-07 09:55:48 4
Btrfs: Find file names with checksum errors

Btrfs reports the inode numbers of files with failed checksums. Use `find` to lookup the file names of those inodes.
This is sample output - yours may be different.
-1

dmesg | grep -Po 'csum failed ino\S* \d+' | sort | uniq | xargs -n 3 find / -inum 2> /dev/null

Sepero · 2014-03-20 06:27:15 10
webcam player in ascii art

Use gstreamer to capture v4l2:///dev/video0 and show ascii art video in display.
This is sample output - yours may be different.
-1

gst-launch v4l2src ! aasink

rubenrua · 2009-02-18 22:17:53 5
gmail safe folder

Returns any file in the folder which would be rejected by Gmail, if you were to send zipped version. (Yes, you could just zip it and knock the extension off and put it back on the other side, but for some people this just isn't a solution) Show Sample Output
This is sample output - yours may be different.
```
./.local/share/Trash/files/run.bat
./.wine/drive_c/Program Files/Nuance/PDF Reader/bin/ZPortfolioRes.dll
./.wine/drive_c/Program Files/Nuance/PDF Reader/bin/zrtf.dll
./.wine/drive_c/Program Files/Nuance/PDF Reader/bin/ztypeset.dll
./writeup/lib/mempatch.ins
./writeup/lib/memoir.ins
```
-1

find | egrep "\.(ade|adp|bat|chm|cmd|com|cpl|dll|exe|hta|ins|isp|jse|lib|mde|msc|msp|mst|pif|scr|sct|shb|sys|vb|vbe|vbs|vxd|wsc|wsf|wsh)$"

poulter7 · 2010-11-23 16:53:55 10
bash function to highlight non-printing characters: tab, newline, BOM, nbsp

Can't see it here, but the non-breaking space is highlighted :) Of course, cat -t -e achieves something similar, but less colourful. Could add more code points from https://en.wikipedia.org/wiki/Space_%28punctuation%29#Spaces_in_Unicode Show Sample Output
This is sample output - yours may be different.
```
$ env printf '\uFEFFfoo\u00A0bar\nfie\tfum'|hl-nonprinting 
 foo? bar&#8267;
fie&#9657;    fum&#8267;
```
-1

hl-nonprinting () { local C=$(printf '\033[0;36m') B=$(printf '\033[0;46m') R=$(printf '\033[0m') np=$(env printf "\u00A0\uFEFF"); sed -e "s/\t/${C}▹&$R/g" -e "s/$/${C}⁋$R/" -e "s/[$np]/${B}& $R/g";}

unhammer · 2012-11-07 10:09:40 9
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Create a random file of a certain, and display progress along the way.

SIZE is the number of gigabytes and the file name is at the end. Random data is generated by encrypting /dev/zero, similar to other techniques posted on here.

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"

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'

Random unsigned integer

works at least in bash. returns integer in range 0-32767. range is not as good, but for lots of cases it's good enough.

Sort on multiple dis-contiguous keys/fields (can even specify key number/field from the end)

Notes: 1) -n-1 means sort key is the last field 2) -l is important if each separate record is on a new line (usually so for text files) 3) -j tells msort not to create log file (msort.log) in the working directory 4) may need to install msort package. 5) msort does lot more. Check man msort

create and md5 sum of your password

create and md5 sum of your password without it showing up in your terminal or history. Afterwards we overwrite the $p variable (thx to bazzargh)

Rename files in batch

Checks throughput between two nodes

This will show the throughput between two nodes. Thanks to szboardstretcher, who posted it here: http://www.linuxquestions.org/questions/linux-networking-3/quick-and-easy-way-to-measure-throughput-between-two-nodes-868998/

Get Your IP Geographic Location with curl and jq

Print text string vertically, one character per line.

Define a function $ vert () { echo $1 | grep -o '.'; } Use it to print some column headers $ paste

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