Commands using bzip2 sorted by votes

Commands using bzip2 (12)

sorted by

Compression formats Benchmark

See: http://imgur.com/JgjK2.png for example. Do some serious benchmarking from the commandline. This will write to a file with the time it took to compress n bytes to the file (increasing by 1). Run: gnuplot -persist <(echo "plot 'lzma' with lines, 'gzip' with lines, 'bzip2' with lines") To see it in graph form.
This is sample output - yours may be different.
3

for a in bzip2 lzma gzip;do echo -n>$a;for b in $(seq 0 256);do dd if=/dev/zero of=$b.zero bs=$b count=1;c=$(date +%s%N);$a $b.zero;d=$(date +%s%N);total=$(echo $d-$c|bc);echo $total>>$a;rm $b.zero *.bz2 *.lzma *.gz;done;done

matthewbauer · 2009-10-20 01:00:51 5
Slightly better compressed archives

Avoids creating useless directory entries in archive, and sorts files by (roughly) extension, which is likely to group similar files together for better compression. 1%-5% improvement.
This is sample output - yours may be different.
2

find . \! -type d | rev | sort | rev | tar c --files-from=- --format=ustar | bzip2 --best > a.tar.bz2

pornel · 2009-12-20 14:04:39 4
Get MD5 checksum from a pipe stream and do not alter it
This is sample output - yours may be different.
2

tee >(openssl md5 > sum.md5) <somefile | bzip2 > somefile.bz2

cfajohnson · 2013-01-27 05:59:14 9
Dump and bz2compress a mysql db

To also move the db backup to another location you could pass the output to the dd command instead of a file mysqldump -u user -h host -ppwd -B dbname | bzip2 -zc9 | dd ssh usr@server "dd of=db_dump"
This is sample output - yours may be different.
1

mysqldump -u user -h host -ppwd -B dbname | bzip2 -zc9 > dbname.sql.bz2

olaseni · 2010-01-19 07:34:21 4
Get MD5 checksum from a pipe stream and do not alter it
This is sample output - yours may be different.
1

cat somefile | tee >(openssl md5 > sum.md5) | bzip2 > somefile.bz2

bugmenot · 2013-01-14 22:03:46 7
Recompress all files in current directory from gzip to bzip2

Find all .gz files and recompress them to bz2 on the fly. No temp files. edit: forgot the double quotes! jeez!
This is sample output - yours may be different.
1

find . -type f -name "*.gz" | while read line ; do gunzip --to-stdout "$line" | bzip2 > "$(echo $line | sed 's/gz$/bz2/g')" ; done

Kaurin · 2013-04-12 19:18:21 7
bzip2 all files in a directory older than 1 week (nicely)
This is sample output - yours may be different.
0

find /logdir -type f -mtime +7 -print0 | xargs -0 -n 1 nice -n 20 bzip2 -9

rootninja · 2014-02-12 19:35:09 7
Recompress all files in current directory from gzip to bzip2

- recompresses all gz files to bz2 files from this point and below in the directory tree - output shows the size of the original file, and the size of the new file. Useful. - conceptually easier to understand than playing tricks with awk and sed. - don't like output? Use the following line: for gz in `find . -type f -name '*.gz' -print`; do f=`basename $gz .gz` && d=`dirname $gz` && gunzip -c $gz | bzip2 - -c > $d/$f.bz2 && rm -f $gz ; done Show Sample Output
This is sample output - yours may be different.
```
44 ./test/ssl-access.log-20140119.gz ... 24 ./test/ssl-access.log-20140119.bz2
44 ./test/ssl-access.log-20140117.gz ... 24 ./test/ssl-access.log-20140117.bz2
44 ./test/ssl-access.log-20140116.gz ... 24 ./test/ssl-access.log-20140116.bz2
```
0

for gz in `find . -type f -name '*.gz' -print`; do f=`basename $gz .gz` && d=`dirname $gz` && echo -n `ls -s $gz` "... " && gunzip -c $gz | bzip2 - -c > $d/$f.bz2 && rm -f $gz && echo `ls -s $d/$f.bz2`; done

pdwalker · 2014-03-13 08:36:24 8
Find with compress logs

Command to compress logs
This is sample output - yours may be different.
0

find ./ -name "file.name" -type f -print -exec bzip2 -9 '{}' \;

alissonf · 2014-12-29 20:18:54 8
Recompress all files in current directory from gzip to bzip2

Works even if file name contains \n. Spawns one job per core.
This is sample output - yours may be different.
0

parallel -0 'gzip -dc {} | bzip2 > {.}.bz2' ::: *.gz

unixmonkey91589 · 2015-12-25 17:28:03 9
gzip vs bzip2 at compressing random strings?

Does that count as a win for bzip2? Show Sample Output
This is sample output - yours may be different.
```
$ \ls -l out*
-rw-r--r-- 1 chillu users 789711 2009-04-04 19:01 out.bz
-rw-r--r-- 1 chillu users 789947 2009-04-04 19:01 out.gz
```
-2

< /dev/urandom tr -dc A-Za-z0-9_ | head -c $((1024 * 1024)) | tee >(gzip -c > out.gz) >(bzip2 -c > out.bz) > /dev/null

jnash · 2009-04-04 13:23:01 11
Install NMAP 5.0 ,Short and sweet command to do it

Just copy and paste the code in your terminal. Note : sudo apt-get for debian versions , change as per your requirement . Source : www.h3manth.com
This is sample output - yours may be different.
-6

sudo wget -c "http://nmap.org/dist/nmap-5.00.tar.bz2" && bzip2 -cd nmap-5.00.tar.bz2 | tar xvf - && cd nmap-5.00 && ./configure && make && sudo make install

hemanth · 2009-07-26 11:36:53 7

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Remove color codes (special characters) with sed

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"

Email a file to yourself

This works on Solaris 10.

Another Curl your IP command

Just another curl command to get your public facing IP

PDF simplex to duplex merge

Joins two pdf documents coming from a simplex document feed scanner. Needs pdftk >1.44 w/ shuffle.

Disco lights in the terminal

Know which version dpkg/apt considers more recent

Compares two versions with dpkg. It is not always obvious what version dpkg/apt will consider to be more recent. Operators include the following : * These treat an empty version as earlier than any version: lt le eq ne ge gt. * These treat an empty version as later than any version: lt-nl le-nl ge-nl gt-nl. * These are provided only for compatibility with control file syntax: < > >. This command doesn't output anything. It only returns with status 0 or 1, hence the echo "y" || echo "n" to get an output.

Find the package that installed a command

Instant mirror from your laptop + webcam (fullscreen+grab)

This directly puts the "mirror" into fullscreen, and lets you take photos by pressing the 's' key. I bet appearance conscious people will have keyboard shortcut for this command by now.

Send a local file via email

if "mail -a" fail, try "mutt -a" or "nail -a"

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands using bzip2

Commands using bzip2 (12) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands using bzip2 (12)

sorted by