Linux Tips: 3 quick interesting tip
//Redo last command as Sudo sudo !! //Create a super fast RAM disk 👍 [root@msdlvd-dsnavl02 ~]# mkdir -p /mnt/ram [root@msdlvd-dsnavl02 ~]# mount -t tmpfs tmpfs /mnt/ram -o size=1024M [root@msdlvd-dsnavl02 ~]# mkdir /data/ram [root@msdlvd-dsnavl02 ~]# cd /data/ram [root@msdlvd-dsnavl02 ram]# dd if=/dev/zero of=test.iso bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 3.00793 s, 349 MB/s [root@msdlvd-dsnavl02 ram]# rm test.iso rm: remove regular file ‘test.iso’? y [root@msdlvd-dsnavl02 ram]# cd /mnt/ram [root@msdlvd-dsnavl02 ram]# dd if=/dev/zero of=test.iso bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 0.594687 s, 1.8 GB/s //not in history, don't add your previously ran command in history, leave a leading space before command ls -al