BASH(oh)			     LOCAL			      BASH(oh)

bash - usage, redirection and tips.

REDIRECTION
     Commands can output to files or programs.

   Files
     Overwrite file
	    : ls > log
     Append to file
	    : ls >> log

   File descriptors
     Command results can:
     -	 be displayed on the terminal: stdout, file descriptor 1.
     -	 be an error: stderr, file descriptor 2.
     When redirecting, only the output is sent, to add error, stderr must be
     added to stdout:
	   ls > log 2>&1
     This redirects stderr(2) to stdout(&1) and the output is saved to log. &1
     means 1 is a file descriptor, not a file.

CHAINED COMMANDS
     Commands can be combined:

     Sequential execution
	    : command1 ; command2
     Execute command2 if command1 was successful
	    : command1 && command2
     Execute command2 if command1 failed
	    : command1 || command2

SUBSHELL
     Commands can be grouped and redirected together.
	   ( command1 && command2 ) >> log 2>&1

SEE ALSO
     linux(oh)

     - Archlinux manpages: bash(1)

AUTHORS
     ohazot(oh) | about(oh) | ohazot.com: https://ohazot.com
     <admin@ohazot.com>

linux , OpenBSD 7.8 |
		    Created:2026-03-27|Updated:2026-03-27|	      BASH(oh)