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Commands by danam from sorted by
Terminal - Commands by danam - 8 results
find . -name <pattern> -ls | awk 'BEGIN {i=0}; {i=i+$7}; END {print i}'
2010-02-05 14:47:27
User: danam
Functions: awk find
Tags: disk usage
2

Just how much space are those zillions of database logs taking up ? How much will you gain on a compression rate of say 80% ? This little line gives you a good start for your calculations.

rsync -a --link-dest=/media/backup/$HOSTNAME/$PREVDATE '--exclude=/[ps][ry][os]' --exclude=/media/backup/$HOSTNAME / /media/backup/$HOSTNAME/$DATE/
2010-01-30 08:36:41
User: danam
Functions: rsync
4

Creates files in $DATE and hardlinks existing files to $PREVDATE. Thus full backup in each directory. Only drawback is changed modification time. Recommend a wrapper script to determine $DATE and $PREVDATE. Works like a charm. (Dirvish handrolled)

PROMPT_COMMAND="history -a"
2009-10-21 12:33:25
User: danam
2

This could be added to .bashrc. Background: Linux usually saves history only on clean exit of shell. If shell ends unclean, history is lost. Also numerous terminals might confuse their history. With this variable set, history is immedeately written, accessible to all other open shells. (Of course other commands can also be run thus.)

ls .[!.]*
2009-09-29 13:50:13
User: danam
Functions: ls
-3

Although rm is protected against it, there are many commands that would wreak havoc on entering the obvious ".*" to address "dot-files". This sweet little expression excludes the dirs "." and ".." that cause the problems.

# for i in $(seq 1 25); do dd if=/dev/urandom of=<your disk> bs=1M ; done
2009-09-29 07:12:34
User: danam
Functions: dd seq
Tags: dangerous
3

Intentional hash in the beginning. May run a looong time. Wipes your data for real. Was meant to be /dev/urandom - I mistyped it. :-)

grep -r <pattern> * .[!.]*
echo {'1,2,3',4}" o'clock" ROCK
2009-09-15 10:12:49
User: danam
Functions: echo
5

AFAIR this is the wording ;)

type <filename>
2009-09-14 09:37:23
User: danam
Functions: type
4

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