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Extract words
shantanuo
10:18h
Extract all incorrect words in first.txt file and all correct ones in second.txt file using the following sed command. sed -n 's/.*"\([^"]*\)".*/\1/p' DocumentList.xml > first.txt sed -n 's/[^"]*"[^\"]*"[^\"]*"\([^\"]*\)".*/\1/p' DocumentList.xml > second.txt ... Link (0 comments) ... Comment
Why do I care for Linux?
shantanuo
09:27h
I don't care that much for other software. Linux is more than a kernel or an operating system. It is a symbol money does not rule everything. You don't pay for Linux. You don't have to watch ads when using it. In return, please be a little more friendly and tolerant to the people who build it. While Linux is built by professionals today, there is more heart and soul poured into it than in other operating systems. http://beza1e1.tuxen.de/my_linux_history.html ... Link (0 comments) ... Comment
backup mysql users
shantanuo
13:49h
3 steps to install percona utility... yum install perl-DBI perl-Data-Dumper perl-DBD-MySQL wget percona.com/get/pt-show-grants perl pt-show-grants -h 1.2.3.4 -uroot -pPasswd ... Link (0 comments) ... Comment
clear tmp folder
shantanuo
14:41h
Here is following commands to clear unwanted stuff from the /tmp partition on the server? tmpwatch –mtime –all 48 /tmp The above command will remove all files and folders from the /tmp which have not been accessed in the last couple of days (24×2=48). You can modify the number of hours as required. ... Link (0 comments) ... Comment
change your server time to IST
shantanuo
14:39h
If you need to change your server clock to another timezone for e.g. (Indian Standard Time), you can do so by modifying the /etc/localtime file: mv /etc/localtime /etc/localtime.bak ln -s /usr/share/zoneinfo/Asia/Calcutta /etc/localtime ... Link (0 comments) ... Comment
Transfer root emails to another email address
shantanuo
14:32h
If you have root access to the server then open the file /etc/aliases in your favorite editor. Look for the section Person who should get root mail and make the change as required. vim /etc/aliases Person who should get root’s mail ## ... Link (0 comments) ... Comment
special strings in cron
shantanuo
14:30h
Instead of the first five fields, you can use any one of eight special strings. It will not just save your time but it will improve readability. Special string Meaning For e.g. run ntpdate every hour: ... Link (0 comments) ... Comment
while loop
shantanuo
12:24h
This is a sample shell script while loop while read mydb ... Link (0 comments) ... Comment
Selecting from error log
shantanuo
10:40h
grep "error" error_log |awk -F[ {'print $4'} \ 114.80.93/24 ... Link (0 comments) ... Comment
mysql and shell command
shantanuo
05:47h
date -d"-1 day ago" +'%b%d' equals to mysql -Bse"select date_format(date(date_add(now() , interval 1 day)),'%b%d')" ... Link (0 comments) ... Comment |
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Extract words Extract all incorrect
words in first.txt file and all correct ones in second.txt...
by shantanuo (10/13/24, 10:18 AM)
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use cheat instead of man
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by shantanuo (8/20/21, 6:36 AM)
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by shantanuo (8/20/21, 6:26 AM)
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