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Category Archives: Linux
globbing
File globbing is a feature provided by the UNIX/Linux shell to represent multiple filenames by using special characters called wildcards with a single file name. A wildcard is essentially a symbol which may be used to substitute for one or more characters. Therefore, we can use wildcards for generating the appropriate combination of file names as per our requirement.
The bash shell provides three characters to use as wildcards:
- Asterisk (*) to represent 0 or more characters
- Question mark (?) to represent exactly one character
- Square brackets ([]) to represent and match for the character enclosed within the square brackets.
Linux Set Time From Shell
You can set the time by using the following command.
date -s "06 DEC 2017 10:00:00"
Delete First N Lines Large File Linux
Run the following command
sed -i '1,200d' file_name.sql
Expand Root Partition CentOS
Run the following command to increase the root partition
lvextend -L+15G /dev/mapper/centos-root && xfs_growfs -d /dev/mapper/centos-root
List File Size In GB Linux
Use –block-size=M /G
For example ls -lrt --block-size=GB will list the files with size info in GB
Disable Selinux
Run the following command to disable SELinux immediately
setenforce 0
getenforce
Enable mod_rewrite Centos
The mod_rewrite module is enabled by default on CentOS 7. If you find it is not enabled on your server, you can enable it by editing 00-base.conf file located in /etc/httpd/conf.modules.d/ directory.
vi /etc/httpd/conf.modules.d/00-base.confAdd or uncomment the following line
LoadModule rewrite_module modules/mod_rewrite.so Service httpd restart
yum-config-manager: command not found
Run the following command
sudo yum install -y yum-utils --enablerepo="base"
Git Add Folder And All Files
Issue the following commands
git add FOLDER_PATH/* git commit -m 'Adding new module' git push origin BRANCH_NAME