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What is the largest TCP/IP network port number allowable for IPv4?
...ary by system. I am running ubuntu linux with 3.19.0-43-generic kernel. $ cat /proc/sys/net/ipv4/ip_local_port_range results in output 32768 61000. As to if one should or shouldn't use a port in one's system's ephemeral port range, I suspect most if not all modern day network operating systems wi...
Programmatically get the cache line size?
... @android : I use fedora-18 x64 machine with core-i5 processor. cat /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size returns 64 in my system. Same for index1,2,3 folders also.
– Abid Rahman K
Aug 8 '13 at 4:43
...
Include headers when using SELECT INTO OUTFILE?
...w to get column list of table my_table in my_schema.
-- override GROUP_CONCAT limit of 1024 characters to avoid a truncated result
set session group_concat_max_len = 1000000;
select GROUP_CONCAT(CONCAT("'",COLUMN_NAME,"'"))
from INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'my_table'
AND TABLE_SC...
Tools for making latex tables in R [closed]
...atures' of xtable and Latex that I'll share here.
Trick #1: Removing Duplicates in Columns and Trick #2: Using Booktabs
First, load packages and define my clean function
<<label=first, include=FALSE, echo=FALSE>>=
library(xtable)
library(plyr)
cleanf <- function(x){ ...
Check free disk space for current partition in bash
...te +%Y%m%d_%H%M%S%Z) ] Current Status:\n\n" >>$MAILMESSAGE
cat $sMess >>$MAILMESSAGE
echo "" >>$MAILMESSAGE
echo "*** This email generated by $(basename $0) shell script ***" >>$MAILMESSAGE
echo "*** Please don't reply this email, this...
Count number of lines in a git repository
...
xargs will do what you want:
git ls-files | xargs cat | wc -l
But with more information and probably better, you can do:
git ls-files | xargs wc -l
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How to get the process ID to kill a nohup process?
...ively, you can find the PID later on by ps -ef | grep "command name" and locate the PID from there. Note that nohup keyword/command itself does not appear in the ps output for the command in question.
If you use a script, you could do something like this in the script:
nohup my_command > my.log 2...
How do I force a favicon refresh?
I have a Grails application running locally using its own tomcat and I have just changed the favicon for a new one. Problem is that I can not see it in any browser. The old favicon shows up or I get no favicon at all, but not my new one. I do not think this is a Grails issue per se, more an issue...
Convert a byte array to integer in Java and vice versa
...ult
short num = wrapped.getShort(); // 1
ByteBuffer dbuf = ByteBuffer.allocate(2);
dbuf.putShort(num);
byte[] bytes = dbuf.array(); // { 0, 1 }
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Git is ignoring files that aren't in gitignore
...wing command to print your .gitignore in user HOME and repository folder:
cat ~/.gitignore "$(git rev-parse --show-toplevel)"/.gitignore "$(git rev-parse --show-toplevel)"/.git/info/exclude
Alternatively use git add -f which allows adding otherwise ignored files.
See: man gitignore, man git-check-...