Commands by ElAlecs

Commands by ElAlecs (4)

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Disabling Spotlight on Mac OS

To re enable just change the "off" for "on" Show Sample Output
This is sample output - yours may be different.
```
Indexing disabled.
```
0

sudo mdutil -a -i off

ElAlecs · 2010-08-26 16:34:20 4
Show the 1000*1000 and 1024*1024 size of HDs on system

I know this sucks in some way but if someone can improve it please be my guest Show Sample Output
This is sample output - yours may be different.
```
        device size with M = 1024*1024:       38166 MBytes
        device size with M = 1000*1000:       40020 MBytes (40 GB)
        device size with M = 1024*1024:       58627 MBytes
        device size with M = 1000*1000:       61475 MBytes (61 GB)
        device size with M = 1024*1024:      238475 MBytes
        device size with M = 1000*1000:      250059 MBytes (250 GB)
```
0

for I in $(awk '/d[a-z]+$/{print $4}' /proc/partitions); do sudo hdparm -I '/dev/'$I; done | grep 'device size with M'

ElAlecs · 2010-03-02 18:56:32 6
tar per directory

Very simple and useful, you need to change the word "directory" for your directory
This is sample output - yours may be different.
-3

cd <YOUR_DIRECTORY>; for i in `ls ./`; do tar czvf "$i".tar.gz "$i" ; done

ElAlecs · 2009-06-11 18:33:27 19

Know which modules are loaded on an Apache server

This let you know which modules has loaded the Apache server, very useful to know if the mod_rewrite is ready to use. Show Sample Output

apache2 -t -D DUMP_MODULES

ElAlecs · 2009-02-16 17:30:20 1020

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Get absolut path to your bash-script

Another way of doing it that's a bit clearer. I'm a fan of readable code.

backup and remove files with access time older than 5 days.

create an archive of files with access time older than 5 days, and remove original files.

Touch a file using a timestamp embedded in the file name.

tstouch takes two arguments: a filename containing a timestamp, and an extended regular expression with the parenthesized section matching a timestamp of the form YYYYMMDDhhmm or YYYYMMDDhhmm.ss. It then touches the file with that timestamp.

show installed but unused linux headers, image, or modules

will show: installed linux headers, image, or modules: /^ii/!d avoiding current kernel: /'"$(uname -r | sed "s/$.*$-$[^0-9]\+$/\1/")"'/d only application names: s/^[^ ]* [^ ]* $[^ ]*$.*/\1/ avoiding stuff without a version number: /[0-9]/!d

Get OSX Battery percentage

adjusting the field "f1" will give you additional information such as f1 = 98% f2 = discharging f3 = 2:02 remaining

uniq for unsorted data

Multi-segment file downloading with lftp

This is for files only, for directories 'mirror' has to be used.

analyze traffic remotely over ssh w/ wireshark

When using tcpdump, specify -U option to prevent buffering.

List just the executable files (or directories) in current directory

A bit shorter ;)

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

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