Commands by psytek

Commands by psytek (4)

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Find the svn directory that a commit was made in. Usefull if you have many projects in one repository.
This is sample output - yours may be different.
-2

echo "12345,12346" |sed -e's/ //'|tr "," "\n"| while read line; do echo -n $line" "; svn log -vr $line https://url/to/svn/repository/|grep "/"|head -1|cut -d"/" -f2; done

psytek · 2009-04-15 15:21:20 4
Recursively grep a subdirectory for a list of files

This command will grep the entire directory looking for any files containing the list of files. This is useful for cleaning out your project of old static files that are no longer in use. Also ignores .svn directories for accurate counts. Replace 'static/images/' with the directory containing the files you want to search for. Show Sample Output
This is sample output - yours may be different.
```
select-button.gif [1]
select-top.png [1]
tab.png [0]
Thumbs.db [0]
```
-5

ls -1 static/images/ | while read line; do echo -n $line' '[; grep -rc $line *|grep -v ".svn"|cut -d":" -f2|grep -vc 0| tr "\n" -d; echo -n ]; echo ; done

psytek · 2009-03-20 20:33:36 14
Change the extension of a filename by using rename to convert

This will change all files ending in .JPG to .jpg and will work with any file extension
This is sample output - yours may be different.
3

rename .JPG .jpg *.JPG

psytek · 2009-03-10 15:07:24 12
Display a list of committers sorted by the frequency of commits

Use this command to find out a list of committers sorted by the frequency of commits. Show Sample Output
This is sample output - yours may be different.
```
5 john
5 sal
3 kate
2 joe
1 fred
1 mark
```
26

svn log -q|grep "|"|awk "{print \$3}"|sort|uniq -c|sort -nr

psytek · 2009-02-17 21:37:03 26

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Print one . instead of each line

If you're running a command with a lot of output, this serves as a simple progress indicator. This avoids the need to use `/dev/null` for silencing. It works for any command that outputs lines, updates live (`fflush` avoids buffering), and is simple to understand.

generate 30 x 30 matrix

Replaces hexdump with the more succint xxd, and the sed was unnecessarily complex.

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" }

find file/dir by excluding some unwanted dirs and filesystems

Consider using this cmd when: 1. You are planning to traverse a big directory. 2. There is a subdir you don't want find to decend to. (entirely ignore) 3. You don't want find to decend to any mounted filesystems under this dir. * The -xdev flag tells find do not go to other filesystems. * -path ./junk_dir -prune is the pattern to ignore ./junk_dir entirely. * The rest is the typical search and print. To ignore multiple subdirs, you can just iterate the pattern, e.g. find . -path ./junk1 -prune -o -path ./junk2 -prune ... If you do want to include other filesystems, then remove -xdev flag. If you want to search files, then change -type d to -type f.

List open sockets protocol/address/port/state/PID/program name

find unreadable file

Push your present working directory to a stack that you can pop later

If are a Bash user and you are in a directory and need to go else where for a while but don't want to lose where you were, use pushd instead of cd. cd /home/complicated/path/.I/dont/want/to/forget pushd /tmp cd thing/in/tmp popd (returns you to /home/complicated/path/.I/dont/want/to/forget)

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Draw kernel module dependancy graph.

parse "lsmod" output to "dot" format and pass it to "display". Without perl!

Copy a file using dc3dd and watch its progress (very nice alternative to dd)

Requires the dc3dd package - available at http://dc3dd.sourceforge.net

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