Check directory size
# To check size of partition df -h # To check size of directory du -s -h /var/log/ #To check every directory and file sizes under a dir. du -s -h /var/log/* #To check individual size du -s -h /var/log/lastlog
Author: Ashutosh Narayan Jha
c/_cffi_backend.c:2:20: fatal error: Python.h: No such file or directory
Error c/_cffi_backend.c:2:20: fatal error: Python.h: No such file or directory #include ^ compilation terminated. Traceback (most recent call last): File “”, line 17, in ———————————————————————- Here it is the problem of python devel For centos use “sudo yum install python-devel.x86_64” For Ubuntu use “sudo apt-get install python-dev”
Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0
configure: error: Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+. Try the –with-gmp, –with-mpfr and/or –with-mpc options to specify their locations. Source code for these libraries can be found at their respective hosting sites as well as at ftp://gcc.gnu.org/pub/gcc/infrastructure/. See also http://gcc.gnu.org/install/prerequisites.html for additional info. If you obtained GMP, MPFR and/or MPC from
How to use screen command to work in detached mode
Sometimes we want to work in detached mode to prevent connection loss during long running processes. The ‘screen‘ command detach a long running process/program/shell-script from a session and is re-attached at a later time. The process that was initiated from the screen is running and managed by the screen even when the session is detached.
Installing Maven 3.3.3 on Ubuntu 14
I am upgrading from 2.4 to 3.3.3 Pre-requisite: JDK 1.5 or above, JAVA_HOME set in environment variable Step 1) Download Maven-3.3.3 binary from a repository using the wget command. wget http://mirrors.sonic.net/apache/maven/maven-3/3.3.3/binaries/apache-maven-3.3.3-bin.tar.gz Step 2) Untar the downloaded binary. tar -zxf apache-maven-3.3.3-bin.tar.gz Step 3) Move the application directory to /usr/local sudo cp -R apache-maven-3.3.3 /usr/local Step 4)
Database access class for MySql with Php
A php class to access mysql. It uses mysqli How to use: Include this Db file. create a Database object like $db = new Db(); For any query; $sql = ‘Mysql query’; $db->query($aql) $tableObject = new stdClass(); $tableObject->field_name1 = ‘field_value1’ $tableObject->field_name2 = ‘field_value2’ $tableObject->field_name3 = ‘field_value3’ $tableObject->field_name4 = ‘field_value3’ // Insert $db->insertObject(‘table_name’, $tableObject); // Update.
Read File in bash and split string into variables
Here my requirement is: 1) I have to read my file line by line. 2) For each line read I need to divide my string into two parts 3) Send the two parts formed to some another script for process. # Here we will read the file and process. # anjFileName contents are as below
Add colors to git command output
Instead of seeing a plain output after a git command we can have the display in color. like when we execute git status to view changed or new files we can view each segment in colored way: or for when we execute git diff a_modified_file_name it is better to view deleted lines in red (-)
Common useful git commands
To go to last state after a conflicted merge: git reset –merge ORIG_HEAD To know the current active branch git branch this command show all branches available on local and highlights the active one. To know all available branch git branch -a
png background issue in ie
Sometimes we find png image is now showing properly on IE. i.e its transparent property do not get apply. To solve do the following fix (microsoft Alphaimage filter) .png-background{ background: url(“/path/to/image/source/ong-image.png”) no-repeat scroll transparent; height: n1px; width: n2px _background-image: none; _filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=/path/to/image/source/ong-image.png,sizingMethod=’scale’); }