In this post, we show how to patch the default release of bash in CentOS-7.3 to enable built-in support of Rsyslog, in order to send command history to a central log server. THis is helpful for internal users’ behaviour auditing.
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Posts tagged with 'bash'
How to execute a command without saving it in .bash_history?
When I use Bash, how can I prevent a command from saving it in bash history? Well, per my tests, there are at least two ways. 1, Prepending one or more spaces to your command With one or more spaces prepending in the command, it won’t saved in bash history file. Your command can run […]
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Send tweets in command-line with Bash
One of our FAQ has described how to use cURL with cookies, here we will show how to update Twitter status from command line on Linux or Mac with Bash, this is simpler compared to the Python way using OAuth.
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Z-Shell: An improved Bourne shell
The Z shell can be thought of as an extended Bourne shell with a large number of improvements, including some features of bash, ksh, and tcsh. The first version of zsh was written by Paul Falstad in 1990, and as for now, the latest production version of Zsh is 5.0.2. You can download it here. […]
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Regular expressions in Bash 3
Since version 3 which released in 2004, Bash acquired a regular expression operator “=~”, but I never noticed it, probably because grep sed or other commands works alternatively well. The regular expression is the same as egrep, you can find more details from man egrep.
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Hudson: Clone jobs in Bash script
With the help of Hudson’s remote access API, we can create/clone a bunch of jobs easily within seconds, here are some example scripts which can be used to explain how we achieve that.
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shell script to monitor OpenVZ container running status
If you’re using OpenVZ, you owe it to yourself to take a look at /proc/user_beancounters every now and again (the last column of this file makes a lot of sense, as it indicates protential problems), but when errors occurred in a container, mostly you lose your chance to run any command in that VE.
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Set system variables in Debian and CentOS
As indicated in title, this request is probably very common for sysadmins. For example, when a Java environment is ready, we need to make sure that JAVA_HOME is globally available for some system accounts, so that they can restart java instance smoothly.
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How to Clear all BASH shell aliases?
How can I clear all UNIX bash shell aliases in one command? I just need to delete them in current session. You need to use unalias command, its syntax: unalias name To remove alias called foo, enter $ unalias foo
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Difference between login shell and non-login shell
Understanding the distinction between your shell types, profile files and shell rc files is important because when you apply modifications to your system you need to know where to set variables in order to make sure that they can be initialized as expected.
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