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UNIX one-liner to kill a hanging Firefox process

The description of how the one-liner works is here at my blog: http://jugad2.blogspot.com/2008/09/unix-one-liner-to-kill-hanging-firefox.html Show Sample Output
This is sample output - yours may be different.
```
Imaging a Firefox window disappearing :-)
(It kills the hanging firefox process.)
```
-2

kill -HUP ` ps -aef | grep -i firefox | sort -k 2 -r | sed 1d | awk ' { print $2 } ' `

vasudevram · 2009-02-07 10:10:45 21
search package descriptions (apt)

Search the names and descriptions of all available packages and prints out the name and the short description.
This is sample output - yours may be different.
0

apt-cache search someregex

chrisdrew · 2009-02-07 09:15:19 22
Add audio CD to xmms2 playlist
This is sample output - yours may be different.
0

xmms2 addpls cdda://

orie · 2009-02-07 08:42:50 37
umount all nfs mounts on machine
This is sample output - yours may be different.
-2

mount | grep : | tr -s ' ' -d 3 | xargs umount -v

rajaseelan · 2009-02-07 04:56:26 11
See the top 10 IP addresses in a web access log
This is sample output - yours may be different.
2

# cut -d ' ' -f1 /var/log/nginx/nginx-access.log | sort | uniq -c | sort -nr | head -10 | nl

msisk · 2009-02-07 00:22:11 12
E-mail a traditional Berkeley mbox to another recipient as individual e-mails.
This is sample output - yours may be different.
1

formail -Y -s /usr/sbin/sendmail bar@example.com < /var/mail/foo

abcde · 2009-02-06 23:37:24 10
Make a thumbnail image of first page of a PDF.

convert is included in ImageMagick. Don't forget the [X] (where X is the page number). [0] is the first page of the PDF.
This is sample output - yours may be different.
5

convert -resize 200 -sharpen 40 some_file.pdf[0] some_file.jpg

abcde · 2009-02-06 23:12:01 13
date offset calculations

The date command does offset calculations nicely, handles concepts like "a month" as you'd expect, and is good for offsets of at least 100M years in either direction. Show Sample Output
This is sample output - yours may be different.
```
Fri Jan 23 14:53:27 CST 2009
```
3

date --date="1 fortnight ago"

mkc · 2009-02-06 20:57:59 11
View latest apache access log

This command opens the latest, most current rotating apache access log for visual analysis and inspection. Run this command from the apache log directory. For error logs, replace access_log with error_log.
This is sample output - yours may be different.
0

view `ls -1 access_log.* | tail -n 1`

jimjmarion · 2009-02-06 18:38:25 14
Display a list of upgradeable packages (apt)

apt-show-versions is a program that shows what packages in the system may be updated and several useful information. The -u option displays a list of upgradeable packages: From: http://www.debian.org/doc/manuals/apt-howto/ch-helpers.en.html Show Sample Output
This is sample output - yours may be different.
```
libeel0/unstable upgradeable from 1.0.2-5 to 1.0.2-7
libeel-data/unstable upgradeable from 1.0.2-5 to 1.0.2-7
```
-3

apt-show-versions -u

cowholio4 · 2009-02-06 17:56:13 12
Backup the first 1MB of your volume

This will copy the first 1MB of your /dev/sdX volume to your /root/sdX.bin file, where SDX is the name of the device you wish to copy the data from (Usually a hard disk) NOTE: Make sure you capitalize the M in field for BS. Show Sample Output
This is sample output - yours may be different.
```
1+0 records in
1+0 records out
1048576 bytes (1.0 MB) copied, 0.0718711 seconds, 14.6 MB/s
```
-4

dd if=/dev/sdX of=/root/sdX.bin bs=1M count=1

dhing · 2009-02-06 17:45:59 181
Import/clone a Subversion repo to a git repo
This is sample output - yours may be different.
2

git svn --authors-file=some-authors-file clone svn://address/of/svn/repo new-git-dir

Pistos · 2009-02-06 17:31:36 13
Undo several commits by committing an inverse patch.

Use this to make a new commit that "softly" reverts a branch to some commit (i.e. squashes the history into an inverse patch). You can review the changes first by doing the diff alone.
This is sample output - yours may be different.
4

git diff HEAD..rev | git apply --index; git commit

Pistos · 2009-02-06 17:29:46 12
resize(1/2) the image using imagemagick
This is sample output - yours may be different.
1

convert -resize 50%x50% image{,_resize}.jpg

aoiaoi · 2009-02-06 17:25:50 11
Serve one or more git repositories

Use this to start git daemon serving all git repos under a path. Show Sample Output
This is sample output - yours may be different.
```
(git daemon has no startup output)
```
0

git daemon --reuseaddr --verbose --export-all --base-path=/parent/of/bare/git/repos

Pistos · 2009-02-06 17:25:04 11
Live filter a log file using grep and show x# of lines above and below
This is sample output - yours may be different.
4

tail -f <filename> | grep -C <# of lines to show above and below> <text>

manalang · 2009-02-06 17:19:01 11
change to the selected directory for zsh users

Show Sample Output
This is sample output - yours may be different.
```
$ cd programs/
$ cd
$ scd 
0       ~
1       ~/programs
select number:
```
0

alias scd='dirs -v; echo -n "select number: "; read newdir; cd -"$newdir"'

aoiaoi · 2009-02-06 16:44:47 15
search user defined function in c language
This is sample output - yours may be different.
1

cflow file.c | grep ':$' | sed 's/ <.*//'

aoiaoi · 2009-02-06 16:18:28 11
Adhoc tar backup

Creates a quick backup with tar to a remote host over ssh.
This is sample output - yours may be different.
1

tar -cvzf - /source/path | ssh <targethostname> -l <username> dd of=/destination/path/backupfile.tgz

smm · 2009-02-06 15:52:09 12
Analyze, check, auto-repair and optimize Mysql Database

A useful way to do a full check and auto repair damaged databases
This is sample output - yours may be different.
2

mysqlcheck -a --auto-repair -c -o -uroot -p [DB]

michelem · 2009-02-06 15:49:16 17
Export/Backup a PostgreSQL database
This is sample output - yours may be different.
-1

pg_dump -U postgres [nomeDB] > db.dump

michelem · 2009-02-06 15:45:03 12
Use last argument of last command

Bash shortcut to work with the last argument of your last command Show Sample Output
This is sample output - yours may be different.
```
$ ls /etc/apache2/httpd.conf-example
/etc/apache2/httpd.conf-example
$ file !$
file /etc/apache2/httpd.conf-example
/etc/apache2/httpd.conf-example:        ascii text
```
15

file !$

leprasmurf · 2009-02-06 15:41:08 17
Get a process's pid by supplying its name
This is sample output - yours may be different.
1

pidof () { ps acx | egrep -i $@ | awk '{print $1}'; }

pmbuko · 2009-02-06 15:33:46 12

Quick command to check if Perl library is installed on your server. Show Sample Output

perl -e "use SOAP::Lite"

leprasmurf · 2009-02-06 15:26:37 16

The top ten commands you use

Show Sample Output
This is sample output - yours may be different.
```
3940 ls
1427 sudo emerge -vpuDN world
1084 top
 684 tail /var/log/samba/log.smbd -n 50
 601 sudo emerge --sync
 573 sudo emerge --depclean
 566 ls -alh
 561 df -ah
 523 cd
 430 sudo revdep-rebuild
```
2

perl -pe 's/.+;//' ~/.zsh_history | sort | uniq -c | sort -r|head -10

aoiaoi · 2009-02-06 15:24:32 166
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find out how much space are occuipied by files smaller than 1024K (sic) - improved

The original didn't use -print0 which fails on weird file names eg with spaces. The original parsed the output of 'ls -l' which is always a bad idea.

output the contents of a file removing any empty lines including lines which contain only spaces or tabs.

Viewing Top Processes according to cpu, mem, swap size, etc.

I've wanted this for a long time, finally just sat down and came up with it. This shows you the sorted output of ps in a pretty format perfect for cron or startup scripts. You can sort by changing the k -vsz to k -pmem for example to sort by memory instead. If you want a function, here's one from my http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html $ aa_top_ps(){ local T N=${1:-10};T=${2:-vsz}; ps wwo pid,user,group,vsize:8,size:8,sz:6,rss:6,pmem:7,pcpu:7,time:7,wchan,sched=,stat,flags,comm,args k -${T} -A|sed -u "/^ *PID/d;${N}q"; }

Download and extract a *tar.gz file with curl.

RELINK a lot of broken symlinks - FIX broken symlinks after rsync site to new server

After you run this script, you can check status for broken symlink with this command: find -L . -type l

Show word-by-word differences between two latex files, in color

backup and synchronize entire remote folder locally (curlftpfs and rsync over FTP using FUSE FS)

connect to a remote server using ftp protocol over FUSE file system, then rsync the remote folder to a local one and then unmount the remote ftp server (FUSE FS) it can be divided to 3 different commands and you should have curlftpfs and rsync installed

Download an Entire website with wget

Compare copies of a file with md5

I had the problem that the Md5 Sum of a file changed after copying it to my external disk. This unhandy command helped me to fix the problem.

Equivalent to ifconfig -a in HPUX

Command is properly working on HP-UX 11.31

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