Do NOT use this procedure if you have files in your versioning enabled bucket that you want to keep. The following procedure will permanently delete all files and versions in a bucket. It was written to be run from Linux/Bash and it assume python3 is installed, and the boto3 package is installed remove-all-versions.bash #! /bin/bash …
The curl command transfers data from any server over to your computer. The wget command downloads the data as a file.
grep -E -o “\b[a-zA-Z0-9.-]+@[a-zA-Z0-9.-]+.[a-zA-Z0-9.-]+\b” filename.txt You can also use egrep instead of grep with the -E switch. egrep -o “\b[a-zA-Z0-9.-]+@[a-zA-Z0-9.-]+.[a-zA-Z0-9.-]+\b” filename.txt
# installing the java jdk via .tar.gz from java.oracle.com to a RHEL / CentOS / Oracle Linux environment – similar on Debian / Ubuntu You have two download options for Redhat and clones for Oracle’s JDK. You can download RPM’s and use the RHEL rpm command to install the Java RPMs – or you can …
setting up java with java_home jre_home and path Read More »
Use find to search an entire directory tree and return filenames that include a string: find . -name “*” -exec grep -ils Jan28 # {} \; ./junkDir/myfile # cat ./junkDir/myfile Jan28 the -s switch on the embedded grep silences error messages including: grep: ./junkDir: Is a directory
FYI newest verision of sqlplus installed with 12.2 has command recall built in – but not rman… and anything older and rman you want this… RLWrap Installation From EPEL Extra Packages for Enterprise Linux (or EPEL) a set of additional packages for Enterprise Linux, including, but not limited to, Red Hat Enterprise Linux (RHEL), CentOS …
List of commonly used built-in shell variables – not a comprehensive list $# – The number of command-line arguments used in the last command $- – Options currently in effect $? – Exit value of the last command – 0 for success $$ – Process ID of the shell $! – …