du -hs FOLDERPATH/* will help to understnd which folder taken more disk space
Category Archives: Linux
/var/crash/ files
They are crash dumps of the kernel, i.e. files that contains useful information to recover the state of the kernel when it was crashing. These files are for your kernel what core dumps are for ordinary executables. There exists an utility that can be used to analyze those files : crash
You can delete files in under /var/crash if you’re willing to lose useful information needed to debug those crashes.
Could not open a connection to your authentication agent.
eval $(ssh-agent)
how to uninstall package in centos 7
yum remove PACKAGENAME
centos 7 list all installed packages
rpm -qa
yum list installed
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