echo cat will print out the word 'cat' on the command line.
cat echo will attempt to list the contents of a file called 'echo'.
Almost everything. C: if (expression) statement else statement Shell: if COMMANDS then COMMANDS else COMMANDS fi Note: these parts can be separated with semicolon as well, eg: if test x"$SHELL" = x"/bin/bash"; then echo 'Bash'; else echo 'Other'; fi
Echo is a program. '' is not a program. '' does not perform any action. Echo returns what you type. '' does not.
Sonar location is in the water and echo location is in the air.
In Oracle, the ECHO command is used in SQL*Plus to control the display of commands in the output. When set to ON, it will display the commands being executed; when set to OFF, it will suppress the output of the commands. For example, you can use it as follows: SET ECHO ON; SELECT * FROM employees; SET ECHO OFF; In this example, the SQL command will be shown in the output when ECHO is ON, making it easier to see what commands are being run.
echo on echo off
Any word typed in a terminal after echo is printed to the screen. Therefore, echo cat simply prints cat.
Internal commands are the commands that are executed <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> directly by the shell. These commands will not have a separate process running for each. External commands are the commands that are executed by the kernal. These commands will have a process id running for it. Internal commands are stored in the cmd.exe command interpreter, ex. Dir External commands correspond to a .com or .cmd file, ex.
In a command prompt or script, "echo off" is a command that disables the echoing of commands being executed to the console. This means that any commands or output will not be displayed while the script or commands are running.
echo "This is my text."
echo $SHELL
rem is a comment that is only seen if you edit the batch echo actually is printed when the batch is running
Use "man time" in a Linux terminal (without the quotes) to view the manual page for time. There are commands to show elapsed time a program runs, when a program is to start, etc. For a simple example, this 'Egg Timer' command: echo -e '\a' >&2; sleep 180; echo -e '\a' >72 will show a blank terminal for 180 seconds. Or 3 minutes, (which is enough to cook a soft-boiled egg!).