This is easy tip. But I never knew in so many years.
Tip : How to open remote shell without typing the full server and user detail. Its like SSH alias.
Open the ssh folder.
cd /home/ganu/.ssh/ touch config vi config
Then add the following lines in the config file
Host host1 User=ganu Hostname=some.server.com Host host2 User=user2 Hostname=some.host.server.com
Then save this file and just type
ssh host1
It will ask for password. And you are done.
Happy Bash.
I got a situation where my Apache mod_rewrite module was not enabled for my openSUSE machine.
Here is the simple way to do it.
First check which apache modules are enabled in your machine.
ankur@ankur:/srv/www/htdocs> grep "^APACHE_MODULES" /etc/sysconfig/apache2 APACHE_MODULES="actions alias auth_basic authn_file authz_host authz_groupfile authz_default authz_user autoindex cgi dir env expires include log_config mime negotiation setenvif ssl userdir php5"
Second Change the apache2 config for modules and restart your apache.
ankur@ankur:/srv/www/htdocs> sudo vi /etc/sysconfig/apache2 ankur@ankur:/srv/www/htdocs> sudo /etc/init.d/apache2 restart Syntax OK Shutting down httpd2 (waiting for all children to terminate) done Starting httpd2 (prefork) done
Finally, chech you module is installed.
ankur@ankur:/srv/www/htdocs> grep "^APACHE_MODULES" /etc/sysconfig/apache2 APACHE_MODULES="actions alias auth_basic authn_file authz_host authz_groupfile authz_default authz_user autoindex cgi dir env expires include log_config mime negotiation setenvif ssl userdir php5 rewrite"
huh!! Its working.
Happy Apache.
Linux support zip and unzip facility.
All you need to install zip and unzip via apt-get in your debian/ubuntu linux.
The same is available via yum or zypper.
Some examples for zip and unzip.
1. Creates the zip archive and put all the files of the current directory in the compressed form.
ankur@ankur:~> cd test/ ankur@ankur:~/test> ll total 0 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 2.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 3.txt ankur@ankur:~/test> zip zipthis * adding: 1.txt (stored 0%) adding: 2.txt (stored 0%) adding: 3.txt (stored 0%) ankur@ankur:~/test> ll total 4 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 2.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 3.txt -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip ankur@ankur:~/test>
This command will automatically put the zip extension when the process will done.
2. Now try for zipping the subdirectory also..
Here I have created the subdirector as “subtest”.
ankur@ankur:~/test> ll total 8 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 2.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 3.txt drwxr-xr-x 2 ankur users 4096 2010-10-20 10:14 subtest -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip ankur@ankur:~/test> zip -r subzipthis * adding: 1.txt (stored 0%) adding: 2.txt (stored 0%) adding: 3.txt (stored 0%) adding: subtest/ (stored 0%) adding: subtest/sub1.txt (stored 0%) adding: subtest/sub2.txt (stored 0%) adding: zipthis.zip (stored 0%) ankur@ankur:~/test> ll total 12 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 2.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 3.txt drwxr-xr-x 2 ankur users 4096 2010-10-20 10:14 subtest -rw-r--r-- 1 ankur users 1306 2010-10-20 10:15 subzipthis.zip -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip ankur@ankur:~/test>
To use unzip to extract all files of the archive pics.zip into the current directory & subdirectories:
3. Listing of your files from a zip folder.
ankur@ankur:~/test> ll total 8 -rw-r--r-- 1 ankur users 1306 2010-10-20 10:15 subzipthis.zip -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip ankur@ankur:~/test> unzip -l subzipthis.zip Archive: subzipthis.zip Length Date Time Name -------- ---- ---- ---- 0 10-20-10 10:03 1.txt 0 10-20-10 10:03 2.txt 0 10-20-10 10:03 3.txt 0 10-20-10 10:14 subtest/ 0 10-20-10 10:14 subtest/sub1.txt 0 10-20-10 10:14 subtest/sub2.txt 382 10-20-10 10:05 zipthis.zip -------- ------- 382 7 files ankur@ankur:~/test>
4. To test about your zip archive that archive is OK or not:
ankur@ankur:~/test> unzip -tq subzipthis.zip No errors detected in compressed data of subzipthis.zip. ankur@ankur:~/test> unzip -tq zipthis.zip No errors detected in compressed data of zipthis.zip.
5. Unzip your data
ankur@ankur:~/test> unzip zipthis.zip Archive: zipthis.zip extracting: 1.txt extracting: 2.txt extracting: 3.txt ankur@ankur:~/test> ll total 8 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 2.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 3.txt -rw-r--r-- 1 ankur users 1306 2010-10-20 10:15 subzipthis.zip -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip
6. Now you want to extract only the specific files from your zip folder. You can use like this…
ankur@ankur:~/test> unzip zipthis.zip 1.txt Archive: zipthis.zip extracting: 1.txt ankur@ankur:~/test> ll total 8 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 1306 2010-10-20 10:15 subzipthis.zip -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip
7. To extract all files to some specified directory.
ankur@ankur:~/test> unzip zipthis.zip -d /home/ankur/test/ Archive: zipthis.zip extracting: /home/ankur/test/1.txt extracting: /home/ankur/test/2.txt extracting: /home/ankur/test/3.txt ankur@ankur:~/test> ll total 8 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 2.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 3.txt -rw-r--r-- 1 ankur users 1306 2010-10-20 10:15 subzipthis.zip -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip
8. Unzip files one by one with confirmation.
ankur@ankur:~/test> unzip -q subzipthis.zip replace 1.txt? [y]es, [n]o, [A]ll, [N]one, [r]ename: y replace 2.txt? [y]es, [n]o, [A]ll, [N]one, [r]ename: y replace 3.txt? [y]es, [n]o, [A]ll, [N]one, [r]ename: y replace zipthis.zip? [y]es, [n]o, [A]ll, [N]one, [r]ename: y ankur@ankur:~/test> ll total 12 -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 1.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 2.txt -rw-r--r-- 1 ankur users 0 2010-10-20 10:03 3.txt drwxr-xr-x 2 ankur users 4096 2010-10-20 10:14 subtest -rw-r--r-- 1 ankur users 1306 2010-10-20 10:15 subzipthis.zip -rw-r--r-- 1 ankur users 382 2010-10-20 10:05 zipthis.zip
9. Zip and Unzip version and liceance.
zip -v zip -L unzip -v
10. Help from zip and unzip
zip -h unzip -h
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