Ludwig Weinzierl

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5,037 reputation
21627
bio website weinzierl.name
location Munich, Germany
age 38
visits member for 5 years
seen Nov 8 '12 at 19:11

I am an aerospace engineer and software developer.


May
17
comment Getting a Cross-Section from Two CSV Files
@Nate: Per default the command joins on the first (space delimited) field. The easiest fix is to use a character that isn't in your file (maybe #) as a field delimiter, like this: join -t# -v2 file1.csv file2.csv >result.csv Another thing I just realized is that your input files have to be sorted for join to work properly.
May
17
comment Getting a Cross-Section from Two CSV Files
@Jonathan Sampson: You can use a pipe to write it in a file like so: join -v2 file1.csv file2.csv > result.csv
May
17
comment Getting a Cross-Section from Two CSV Files
Sorry, -a2 is a right outer join. If you only want the unpairable lines it's -v.
May
17
revised Getting a Cross-Section from Two CSV Files
edited body; added 17 characters in body; added 4 characters in body
May
17
answered Getting a Cross-Section from Two CSV Files
May
14
comment How to find the executable files under a certain directory in linux?
If you have an old version of find (probably before 4.3.8) which lacks -executable use find . -perm /u=x,g=x,o=x.
May
14
revised Does this exist: a standardized way of documenting a file-system structure
added 801 characters in body
May
14
answered Does this exist: a standardized way of documenting a file-system structure
May
10
comment Gparted doesn't detect any partitions
Before you mess with fdisk you should consider to backup your old (broken) partition table, just in case fdisk does more harm than good.
May
7
comment bash history is appended, but histappend is off
@quack: I have upgraded this install several times, so I'm not 100% sure. For me it doesn't matter if histappend is on or off, history is always appended. What I'm really curious about is why this happens? It would be insightful, if you could shopt -u histappend and tell me if it is still appended in your install?
May
7
comment bash history is appended, but histappend is off
@quack: Thanks, I'm ahead of my time, as always;-)
May
1
comment bash history is appended, but histappend is off
echo $PROMPT_COMMAND returns echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD/$HOME/~}\007". trap -p returns nothing. I have no /etc/bash.logout and ~/.bash_logout contains nothing regaring history.
May
1
asked bash history is appended, but histappend is off
Mar
24
awarded  Fanatic
Mar
17
awarded  Good Answer
Mar
7
answered Utility to determine the font used on a site?
Mar
6
comment Font substitution with ~/.fonts.conf
I came here because I'd about to accomplish something similar. Hopefully someone has an answer...
Mar
1
awarded  Nice Answer
Feb
10
comment Mechanical keyboard switches: linear, soft, click. What is the difference?
dwynee, don't forget to tell us here, how it works:-)
Feb
10
comment Mechanical keyboard switches: linear, soft, click. What is the difference?
I have a Cherry G80-3000-LSCEU-0 for about two months now. It's the one with the click pressure point (blue switches). I'm very happy with it and I consider buying one for work too. I was quite concerned that it might be too noisy but that turned out to be no problem. It is louder than an ordinary keyboard, but really not that much.