Commands by ashawley

Commands by ashawley (7)

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recursively change file name from uppercase to lowercase (or viceversa)
This is sample output - yours may be different.
-6

find . -type d -name '*[A-Z]*' -execdir bash -c '! test -f "$(echo "$0" | tr "[:upper:]" "[:lower:]")"' {} \; -execdir bash -c 'mv "$0" "$(echo "$0" | tr "[:upper:]" "[:lower:]")"' {} \;

ashawley · 2010-04-01 04:35:52 32
Start xterm in given directory

Perfect time for the rarely used sub shell.
This is sample output - yours may be different.
-4

( cd /my/directory; xterm& )

ashawley · 2009-10-13 13:07:21 5
sort lines by length
This is sample output - yours may be different.
6

awk '{print length, $0;}' | sort -nr

ashawley · 2009-10-07 16:32:27 4
Ultimate current directory usage command

A little bit smaller, faster and should handle files with special characters in the name.
This is sample output - yours may be different.
1

find . -maxdepth 1 ! -name '.' -execdir du -0 -s {} + | sort -znr | gawk 'BEGIN{ORS=RS="\0";} {sub($1 "\t", ""); print $0;}' | xargs -0 du -hs

ashawley · 2009-09-11 16:07:39 7
Run remote web page, but don't save the results

I don't know if the --spider option works to execute a script, but it might be worth trying. Note that the Drupal project uses the following in a cron job. wget -O - -q http://localhost/drupal/cron.php The output is sent to standard out so it can be logged by cron.
This is sample output - yours may be different.
0

wget -q --spider http://server/cgi/script

ashawley · 2009-09-11 05:33:48 3
Display the standard deviation of a column of numbers with awk

This will calculate a running standard deviation in one pass and should never have the possibility for overflow that can happen with other implementations. I suppose there is a potential for underflow in the corner case where the deltas are small or the values themselves are small.
This is sample output - yours may be different.
4

awk '{delta = $1 - avg; avg += delta / NR; mean2 += delta * ($1 - avg); } END { print sqrt(mean2 / NR); }'

ashawley · 2009-09-11 04:46:01 10
Compute running average for a column of numbers

This is an on-line algorithm for calculating the mean value for numbers in a column. Also known as "running average" or "moving average".
This is sample output - yours may be different.
6

awk '{avg += ($1 - avg) / NR;} END { print avg; }'

ashawley · 2009-09-10 17:06:03 8

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Send remote command output to your local clipboard

This command will copy command's output into your local clipboard

Reduce PDF size

Decrypt exported android wallet keys for import into desktop client (LTC,FTC,BTC)

Convert files from DOS line endings to UNIX line endings

The old dos2unix from sysutils has been deprecated on Debian systems to this tool.

list files recursively by size

Scan a gz file for non-printable characters and display each line number and line that contains them.

Scans the file once to build a list of line numbers that contain non-printable characters Scans the file again, passing those line numbers to sed as two commands to print the line number and the line itself. Also passes the output through a tr to replace the characters with a ?

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"

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"

save your current environment as a bunch of defaults

need ascii art pictures for you readme text ?

Require boxes and / or cowsay packages. After input boxes -d dog , type your text and then press ctrl + d . Same goes for cowsay .

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