Create an alias.
alias gcloud='docker run --rm -ti --volumes-from gcloud-config google/cloud-sdk:latest gcloud' |
Remove an alias.
unalias gcloud |
Remove SSSD package
How to remove SSSD package.
#!/bin/bash service sssd stop chkconfig sssd off rm -rf /var/lib/sss/db/* rm -f /etc/sssd/sssd.conf rm -f /etc/krb5.conf rm -f /etc/krb5.keytab yum remove -y adcli sssd authconfig pam_krb5 samba4-common realmd |
Reinstall Kernel
How to reinstall the latest kernel and rebuild initramfs.
Find the latest kernel.
rpm -qa kernel
kernel-3.10.0-1160.6.1.el7.x86_64
kernel-3.10.0-1160.11.1.el7.x86_64 |
Remove the kernel first, then reinstall.
yum remove kernel-3.10.0-1160.6.1.el7.x86_64 yum install kernel-3.10.0-1160.6.1.el7.x86_64 |
Remove Sudo Password
Removing sudo password is typically not a good practice. If you’re a seasoned system administrator, or you’re the only one using your own desktop, being prompted for a sudo password can get really annoying. Here’s how to stop getting prompted every time you run sudo.
Run visudo.
sudo visudo |
Edit the sudo line and set to below.
%sudo ALL=(ALL) NOPASSWD: ALL |
Save file.
Remove Quotes From Strings
Here’s the command to remove quotes from a string in Bash by using the tr -d command. I’m using jq tool to extract the access key from a json file. Bash returns a string surrounded by quotes. To remove the quotes, just pipe the string to the tr -d command.
jq .AccessKey.AccessKeyId key.json |
Result:
"ASDFSDFSDFASDFSDFSDFGHGDF" |
Using tr -d.
jq .AccessKey.AccessKeyId key.json | tr -d \" |
Result:
ASDFSDFSDFASDFSDFSDFGHGDF |