how_to
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how_to [2016/08/18 15:56] k2patel [Building Software RAID] |
how_to [2020/08/10 02:35] (current) |
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| To drop all the table in the mysql database - use the following command. | To drop all the table in the mysql database - use the following command. | ||
| + | <WRAP prewrap> | ||
| <code mysql> | <code mysql> | ||
| mysqldump -u[USERNAME] -p[PASSWORD] --add-drop-table --no-data [DATABASE] | grep ^DROP | mysql -u[USERNAME] -p[PASSWORD] [DATABASE] | mysqldump -u[USERNAME] -p[PASSWORD] --add-drop-table --no-data [DATABASE] | grep ^DROP | mysql -u[USERNAME] -p[PASSWORD] [DATABASE] | ||
| </code> | </code> | ||
| + | </WRAP> | ||
| ==== How to list pear using php ==== | ==== How to list pear using php ==== | ||
| Line 201: | Line 201: | ||
| If you need to run cron with your own php.ini and send result to mail use following. | If you need to run cron with your own php.ini and send result to mail use following. | ||
| + | <WRAP prewrap> | ||
| <code bash> | <code bash> | ||
| */1 */2 * * * /usr/local/bin/php --php-ini /srv/www/conf/php.ini /srv/www/public_html/cron.php | /usr/bin/mail -s "Output of crontab" xyz@yahoo.com | */1 */2 * * * /usr/local/bin/php --php-ini /srv/www/conf/php.ini /srv/www/public_html/cron.php | /usr/bin/mail -s "Output of crontab" xyz@yahoo.com | ||
| </code> | </code> | ||
| + | </WRAP> | ||
| ==== Exit Codes ==== | ==== Exit Codes ==== | ||
| At some point you feel like there is no exit code documentation and you want find you what should it return.\\ | At some point you feel like there is no exit code documentation and you want find you what should it return.\\ | ||
| Line 426: | Line 426: | ||
| ==== Creating patch for rpm ==== | ==== Creating patch for rpm ==== | ||
| + | this can be used as '%patch0 -p1 -b <file_name>' | ||
| <code bash> | <code bash> | ||
| diff -ru hdf-4.2.12-orig hdf-4.2.12-diff >| ../SOURCES/hdf-4.2.12.example.patch | diff -ru hdf-4.2.12-orig hdf-4.2.12-diff >| ../SOURCES/hdf-4.2.12.example.patch | ||
| Line 438: | Line 439: | ||
| </code> | </code> | ||
| </WRAP> | </WRAP> | ||
| + | |||
| + | ==== Run single command parallel'y with diff values ==== | ||
| + | <WRAP prewrap> | ||
| + | <code bash> | ||
| + | (echo "http://test.k2patel.in"; echo "http://test.ornl.gov"; echo "http://yahoo.com" ) | parallel 'ab -n 50 -c 50 {}' | ||
| + | </code> | ||
| + | </WRAP> | ||
| + | |||
| + | ==== Print yum variable value ==== | ||
| + | <code python> | ||
| + | import yum | ||
| + | import pprint | ||
| + | |||
| + | yvar = yum.YumBase() | ||
| + | pprint.pprint(yvar.conf.yumvar, width=1) | ||
| + | </code> | ||
| + | |||
| + | ==== Disable Predictable interface name in RHEL / CentOS ==== | ||
| + | Pass following during boot kernel command line. | ||
| + | <code bash> | ||
| + | net.ifnames=0 | ||
| + | </code> | ||
how_to.1471535788.txt.gz ยท Last modified: 2020/08/10 02:30 (external edit)
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