Replace old text with new text Linux Command
[root@srv01 demo]# grep -rl ‘from test old’ . | xargs sed -i ‘s/from test old/from test new/g’
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Objective This articles describe on installing the paravirtualized drivers on a linux operating systems like centos, redhat, ubuntu Instructions 1. Insert the XenTools ISO in the DVD drive of the Linux VM2. Mount the DVD drive to /mnt using : “mount /dev/xvdd /mnt”It says , mount : block device /dev/xvdd is write-protected, mounting read-only The…
Often time, you may need to know which file contains large file size, and delete it to save space. Here’s a code pattern to show you how to find large file size on Linux : 1. File size >= 100MB Find all files that have a size >= 100MB, from root folder and its sub-directories….
This article describes how to check and upgrade the Linux kernel in OpenVZ, KVM, and Dedicated Servers (including the CloudLinux platform). Checking the Kernel Version To check system parameters such as the kernel version and build date, OS architecture, hostname, etc., you can use the uname command, which is included in coreutils package: # uname -rv 3.10.0-693.11.6.el7.x86_64 #1 SMP Thu Jan…
I am getting an error message that read as follows: rmdir: failed to remove ‘trip-pictures’: Directory not empty How can I remove non empty directory in Linux using the cli? There are two commands that one can use to delete non empty directories in Linux operating system: rmdir command – Delete directory only if it…
To check the load: sar -q -f /var/log/sa/sa$(date +%d -d yesterday) To check the CPU status: sar -p -f /var/log/sa/sa$(date +%d -d yesterday) To check the Swap Space usage: sar -S -f /var/log/sa/sa$(date +%d -d yesterday) To check the RAM memory usage: sar -r -f /var/log/sa/sa$(date +%d -d yesterday)