Change the commit message with git
I'm sure you've done it before: added a commit message with git but typed it in wrong and need to change it. If you haven't pushed the commit yet then it's as simple as 'git commit –amend -m "New commit message"'.
Linux/Unix/BSD
Information And Reviews On Linux, Unix And Bsd Operating Systems
Unix is a multi-user, multi-tasking operating system that was initially developed by Bell Labs in the 1970s. Various similar operating systems that are POSIX compliant (ie compatible with Unix) have since been developed (POSIX is an abbreviation for Portable Operating System Interface for UNIX). These include the following: the BSD family (OpenBSD, FreeBSD, NetBSD, Mac OS/X), Solaris, IRIX, AIX, SunOS, UnixWare, OpenServer and Linux.
Software written for POSIX compliant operating systems is generally able to be compiled for all POSIX platforms with little or no platform-specific changes. This makes the commands and utilities available for this extended family of operating systems very similar, and there are few differences between administering them.
The articles in this section are about useful command line utilities and commonly used application software on POSIX compliant operating systems. For Mac OSX specific articles see my OSX section.
Base64 decode from the command line
The base64 command is used to encode and decode data to and from base64. This post shows how to decode base64 data in a file and when copying and pasting.
Install Java on the command line with Debian
If it was nice and intuitive to install Java on Debian (and other Debian based distros such as Ubuntu), I wouldn’t need to write this post because it would just be "apt-get install java". But no, I always forget what I need to install, hence this post…
Setting a user’s supplementary groups on Linux
A user on Linux belongs to a primary group, which is specified in the /etc/passwd file, and can be assigned to multiple supplementary groups, which are specific in the /etc/group file. The usermod command can be used after creating to user to assign them to additional groups(s).
Use a different rsa identity file when using ssh
You may need to use different identity files when logging into ssh/sftp servers, so this post shows how to specify a different one to use from the command line, and then always using that key by default in the config file.
Change the passphrase for an SSH RSA key file
Use the ssh-keygen command with the -p flag to change or remove the passphrase for an SSH RSA private key file.