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Monday, 18. February 2008
History Searches
shantanuo
17:17h
Often the command you need is in your history, how do you find it? One simple method is to run the history command and pipe it through grep.
$ history | grep cat 110 cat /tmp/foo You can then run the command by typing ! and the history line number: $ !110 cat /tmp/foo ... Comment |
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tmpdir in MySQL In MySQL,
the tmpdir path is mainly used for disk-based sorts (if...
by shantanuo (2009.06.20, 07:22)
Install SQLite $ # As
of March 2009, the latest version was 3.6.11.
$ wget...
by shantanuo (2009.05.13, 19:24)
Using binlogs to update table
It is very interesting to know about how to extract...
by shantanuo (2009.05.11, 21:43)
awk power $ cat salaries
Yvette van der Hoff 100000
Sarack Abama 400000
Bernie Madoff...
by shantanuo (2009.05.04, 20:07)
skip networking in MySQL When
there is maintenance work to be carried on the database...
by shantanuo (2009.05.03, 21:04)
Saving data to text file
sqlite> .mode list
sqlite> .separator |
sqlite> .output test_file_1.txt
sqlite>...
by shantanuo (2009.05.02, 20:31)
Silent mode in Linux Sick
of your computer speaker beeping like a demented Morse code...
by shantanuo (2009.04.30, 12:51)
valid date validdate.sh script will
look like this...
#!/bin/sh
userdate=$1
date -d $userdate &> /dev/null...
by shantanuo (2009.04.13, 15:44)
IP addresses from access log
generate a list of IP address along with the number...
by shantanuo (2009.04.07, 12:04)
Backup a directory #!/bin/sh
tar czvf $1.$(date +%Y%m%d-%H%M%S).tgz $1
exit $?
The arc script accepts...
by shantanuo (2009.04.06, 15:47)
Time Zone error on slave
Last_Error: Error 'Unknown or incorrect time zone: 'Etc/UTC'' on query....
by shantanuo (2009.03.30, 13:05)
pager to md5sum When optimizing
queries by rewriting them to different forms that should return...
by shantanuo (2009.03.30, 13:03)
setting at jobs # at
-v 03:00 -f /root/shantanu/testat.sh > /root/shantanu/testat_result.txt 2>&1
# atq
7...
by shantanuo (2009.03.13, 10:07)
better code `test -s /var/log/mailme.txt`
if [[ $? -eq 0 ]] ; then
The above...
by shantanuo (2009.03.10, 18:15)
read .csv file #!/bin/sh
awk -F"," '{print $1,$2}' read1.txt | while read var1 var2
do...
by shantanuo (2009.03.10, 18:03)
common crontab entry 30 0
* * * updatedb > /dev/null 2>&1
# Clock synchronization...
by shantanuo (2009.03.10, 10:20)
Declare your assets! The declare
command can be helpful in identifying variables, environmental or otherwise....
by shantanuo (2009.03.01, 18:48)
Innodb troubleshooting When you have
your mysql up and running, just connect to any database...
by shantanuo (2009.02.26, 12:59)
Watch replication $ watch --interval=1
--differences 'mysql -uuser -ppassword -e "show slave status\G"'
by shantanuo (2009.02.25, 18:30)
findtable shell script # vi
/bin/findtable
#!bin/sh
mysql -e"select TABLE_SCHEMA, TABLE_NAME, ENGINE, TABLE_ROWS, CREATE_TIME FROM...
by shantanuo (2009.02.05, 17:31)
processor info Gather information about
the processor. This is easily done as follows:
# cat...
by shantanuo (2009.01.20, 19:44)
Help Me! You can use
the mysql client to perform lookups in the MySQL manual....
by shantanuo (2009.01.02, 20:33)
Show only PHP errors Open
/etc/php.ini file
# vi /etc/php.ini
Set error_reporting as follows:
error_reporting...
by shantanuo (2008.12.31, 16:46)
optimize all tables mysql -e"SELECT
CONCAT('OPTIMIZE TABLES ', GROUP_CONCAT(TABLE_SCHEMA, '.', TABLE_NAME ORDER BY TABLE_SCHEMA, TABLE_NAME...
by shantanuo (2008.11.11, 17:14)
Unix cheatsheets Cheat sheet act
as a reference tool which provides cut and paste kind...
by shantanuo (2008.11.08, 19:30)
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