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Avoiding a for loop brought this time down to less than 3 seconds on my old machine. And just to be clear, 33554432 = 8192 * 4086.
Using the 'time' command, running this with 'tr' took 28 seconds (and change) each time but using base64 only took 8 seconds (and change). If the file doesn't have to be viewable, pulling straight from urandom with head only took 6 seconds (and change)
Uses urandom and tr to generate a random password. Change the value of head -c## for the lenght of the password.
Access www.kernel.org and download the last stable linux kernel release.
Sorts by latest modified files by looking to current directory and all subdirectories
Use less random number resources and less commands
Took one of the samples, added capitalization and removes in between spaces.
The final "echo" is just for readability.
Pipes the header row of ps to STDERR, then greps for the command on the output of ps, removing the grep entry before that.
bash-3.2$ find /logs -ls -xdev | sort -nrk 7 | head -10
1761905 205380 -rwxrwxr-x 1 wsadmin logadmin 210095353 Jul 22 01:33 /logs/intlpymt/Trace.log
652689 187360 -rwxrwxr-x 1 wsadmin logadmin 191663182 Jul 21 23:00 /logs/websphere/wsfpp1lppwa1213omsecureServer/SystemOut_13.07.21_23.00.12.log
2380449 186536 -rwxrwxr-x 1 wsadmin logadmin 190819939 Jul 16 14:03 /logs/omset/traceIntl.log.201307161403.lppwa1213.gz
2119524 183888 -rwxrwxr-x 1 wsadmin logadmin 188110111 Jul 22 01:33 /logs/intlpymt/intlpymtria/Trace.log
652816 160332 -rwxrwxr-x 1 wsadmin logadmin 164011871 Aug 14 2012 /logs/websphere/wsfpp1lppwa1213omsecureServer/SystemOut.log_08142012.gzip
653312 128916 -rwxrwxr-x 1 wsadmin logadmin 131873943 Jul 18 10:49 /logs/websphere/heapdump.20130718.104150.27592.0006.phd.201307181406.lppwa1213.gz
653320 128916 -rwxrwxr-x 1 wsadmin logadmin 131873735 Jul 18 10:40 /logs/websphere/heapdump.20130718.104012.27592.0002.phd.201307181406.lppwa1213.gz
653309 128912 -rwxrwxr-x 1 wsadmin logadmin 131867602 Jul 18 10:46 /logs/websphere/heapdump.20130718.104008.27592.0001.phd.201307181405.lppwa1213.gz
653323 128872 -rwxrwxr-x 1 wsadmin logadmin 131828157 Jul 18 10:41 /logs/websphere/heapdump.20130718.104109.27592.0004.phd.201307181407.lppwa1213.gz
652783 120288 -rwxrwxr-x 1 wsadmin logadmin 123047750 Aug 13 2012 /logs/websphere/wsfpp1lppwa1213omsecureServer/SystemOut.log_0813.2012.gzip
20characters long alpahnumeric "password"
perhaps you should use CMD[$2] instead of CMD[$4]
list the top 15 folders by decreasing size in MB
top 10 of access log
cut log from line 50 to line 88
cut log from row 100 to row 150.
Interesting to see which packages are larger than the kernel package.
Useful to understand which RPMs might be candidates to remove if drive space is restricted.
Find top 5 big files