From help set : -e Exit immediately if a command exits with a non-zero status. But it’s considered bad practice by some (bash FAQ and irc freenode #bash FAQ authors). It’s recommended to use: trap ‘do_something’ ERR to run do_something function when errors occur. See http://mywiki.wooledge.org/BashFAQ/105
You can have multiple exclude options for tar so $ tar –exclude=”./folder” –exclude=”./upload/folder2″ -zcvf /backup/filename.tgz . etc will work. Make sure to put –exclude before the source and destination items.
POSIX is a family of standards, specified by the IEEE, to clarify and make uniform the application programming interfaces (and ancillary issues, such as commandline shell utilities) provided by Unix-y operating systems. When you write your programs to rely on POSIX standards, you can be pretty sure to be able to port them easily among … Read more
On the command line execute: php –ini You will get something like: Configuration File (php.ini) Path: /etc/php5/cli Loaded Configuration File: /etc/php5/cli/php.ini Scan for additional .ini files in: /etc/php5/cli/conf.d Additional .ini files parsed: /etc/php5/cli/conf.d/curl.ini, /etc/php5/cli/conf.d/pdo.ini, /etc/php5/cli/conf.d/pdo_sqlite.ini, /etc/php5/cli/conf.d/sqlite.ini, /etc/php5/cli/conf.d/sqlite3.ini, /etc/php5/cli/conf.d/xdebug.ini, /etc/php5/cli/conf.d/xsl.ini That’s from my local dev-machine. However, the second line is the interesting one. If there is … Read more
You need to add it to your ~/.profile or ~/.bashrc file. export PATH=”$PATH:/path/to/dir” Depending on what you’re doing, you also may want to symlink to binaries: cd /usr/bin sudo ln -s /path/to/binary binary-name Note that this will not automatically update your path for the remainder of the session. To do this, you should run: source … Read more
Your command does not work because the redirection is performed by your shell which does not have the permission to write to /root/test.out. The redirection of the output is not performed by sudo. There are multiple solutions: Run a shell with sudo and give the command to it by using the -c option: sudo sh … Read more
Try something like: du -sh * short version of: du –summarize –human-readable * Explanation: du: Disk Usage -s: Display a summary for each specified file. (Equivalent to -d 0) -h: “Human-readable” output. Use unit suffixes: Byte, Kibibyte (KiB), Mebibyte (MiB), Gibibyte (GiB), Tebibyte (TiB) and Pebibyte (PiB). (BASE2)
In the Old Days (pre-ANSI), predefining symbols such as unix and vax was a way to allow code to detect at compile time what system it was being compiled for. There was no official language standard back then (beyond the reference material at the back of the first edition of K&R), and C code of … Read more
These messages are due to an incorrect default value of core.autocrlf on Windows. The concept of autocrlf is to handle line endings conversions transparently. And it does! Bad news: the value needs to be configured manually. Good news: it should only be done one time per Git installation (per project setting is also possible). How … Read more
export makes the variable available to sub-processes. That is, export name=value means that the variable name is available to any process you run from that shell process. If you want a process to make use of this variable, use export, and run the process from that shell. name=value means the variable scope is restricted to … Read more