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Search references for ECHO COMMAND. Phrases containing ECHO COMMAND
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Shell command for writing to standard output
echo is a shell command that writes input text to standard output. It is available in many operating system and shells. It is often used in a shell script
Echo_(command)
Network utility used to test the reachability of a host
(ICMP) packets. Pinging involves sending an ICMP echo request to the target host and waiting for an ICMP echo reply. The program reports errors, packet loss
Ping_(networking_utility)
Script file for Microsoft computer operating systems
line. batchtest.bat @echo foo @echo bar C:\>batchtest.bat foo bar It does not matter if the two echo commands share the same command line; the CR/LF codes
Batch_file
Command of command line interpreters
updated" is displayed using the echo command, and the title of the Command Prompt window is changed back to "Command Prompt". @echo off title Updating files
Title_(command)
GNU replacement for the Bourne shell
-r; type -a echo echo is a shell builtin echo is /usr/bin/echo echo is /home/liveuser/echo In order to execute a commandline with a command found later
Bash_(Unix_shell)
Shell for Windows NT and other operating systems
handling. For example: >echo me & you me 'you' is not recognized as an internal or external command, operable program or batch file. >echo "me & you" "me & you"
Command_Prompt_(Windows)
any other command, to files or devices. Often used in batch file. Another important use of the echo command is to toggle echoing of commands on and off
List_of_DOS_commands
Topics referred to by the same term
Look up Echo, echo, or reecho in Wiktionary, the free dictionary. An echo is a reflection of sound. Echo may also refer to: Echo (DC Comics), various different
Echo_(disambiguation)
systems today. The command is available as a separate package for Windows via UnxUtils. In the following commands, the echo command prints a string of
Expand_(Unix)
Section of a source code file that is treated as if it were a separate file
the echo command, as in: $ echo 'one two three' | LANG=C tr a-z A-Z ONE TWO THREE however here strings are particularly useful when the last command needs
Here_document
Voice command device from Amazon
Amazon Echo, often shortened to Echo, is a brand of smart speakers developed by Amazon. Echo devices connect to the voice-controlled intelligent personal
Amazon_Echo
Display of data which has been transmitted
The Hayes AT commands that control local echo (in command mode) are E0 for off and E1 for on. For local echo (in data mode), the commands are F1 and F0
Echo_(computing)
Command language for modems
The Hayes command set (also known as the AT command set) is a specific command language originally developed by Dale Heatherington and Dennis Hayes for
Hayes_AT_command_set
or to help determine the cause of an error. It can be as simple as an echo command to print the value of a variable at certain points of a program. Modern
Debug_code
External instruction to a computer program
case \t results in a tab character. echo -e "Hello\tWorld" In shells such as command prompt, DOS, and OS/2 some commands are built-in: not implemented as
Command_(computing)
IF ERRORLEVEL command (which tests on "greater or equal"). The selected choice is then printed to the screen using the ECHO command. @ECHO OFF @CHOICE /C:XYZ
Choice_(command)
Joint-service command of the US Dept. of Defense in South Vietnam (1962-73)
The U.S. Military Assistance Command, Vietnam (MACV) was a joint-service command of the United States Department of Defense, composed of forces from the
Military Assistance Command, Vietnam
Military_Assistance_Command,_Vietnam
Unix command-line messaging utility
output of the echo command: alice@sleipnir:~$ # `tty` to show the current terminal name alice@sleipnir:~$ tty /dev/pts/7 alice@sleipnir:~$ echo Remember to
Wall_(Unix)
is available on many operating systems today. In the following commands, the echo command prints a string of text that includes multiple consecutive spaces
Unexpand
User-friendly interactive Unix shell
'set' command extends to work with arrays, scoping, etc. > set foo bar > echo $foo bar # Command substitution # # Assign the output of the command 'pwd'
Fish_(Unix_shell)
Unix shell command
Bash. The command supports several options via flags. It can be configured to issue a message using -p instead of needing to use the echo command. It can
Read_(Unix)
Means of entering commands to software
A command-line interface (CLI), also known as a command-line shell, is a means of interacting with software via commands – each formatted as a line of
Command-line_interface
Conditional operator in computer programming
echo "value_if_true" ; else echo "value_if_false" ; fi) Where condition can be any bash command. When it exits with success, the first echo command is
Ternary_conditional_operator
Default directory for file-system operations
working directory cannot be changed. COMMAND.COM in DR-DOS 7.02 and higher provides ECHOS, a variant of the ECHO command that omits the terminating linefeed
Working_directory
Security bug in the GNU Bash shell discovered in 2014
following code: env X='() { (a)=>\' bash -c "echo date"; cat echo On a vulnerable system, this would execute the command "date" unintentionally. Here is an example
Shellshock_(software_bug)
Video game series
signed an exclusive agreement with Smart to bring the first Galactic Command title, Echo Squad, exclusively to its Gametap subscription service in the Spring
Galactic_Command
Unix shell
runs a command. The first word is taken as name of the command to be run and may be either an internal command, e.g., echo, or an external command. The
C_shell
Utility for transforming text
command line, the echo command writes "xyz" to standard output which is piped to sed which replaces "x" with "y" as shown on the second line. $ echo xyz
Sed
Default command line for MS-DOS and Windows 9x
specified directory. ECHO Toggles whether the commands executed by a batch file are displayed on screen (ECHO ON) or not (ECHO OFF). Also displays text
COMMAND.COM
Time-sharing operating system
is substituted into the command, so that the echo command prints the working directory. Some programs can act either as commands or as active functions;
Multics
Character used to start an escape sequence
single quotes; same effect as above (｀-´)> $ echo ;) # syntax error $ echo ';)' \;\) # both OK The Windows command-line interpreter uses a caret character
Escape_character
Nymph in Greek mythology
In Greek mythology, Echo (/ˈɛkoʊ/; Greek: Ἠχώ, Ēkhō, "echo", from ἦχος (ēchos), "sound") was an Oread who resided on Mount Cithaeron. Zeus loved consorting
Echo_(mythology)
Marvel Comics fictional character
Echo (Maya Lopez) is a character appearing in American comic books published by Marvel Comics. Created by David Mack and Joe Quesada, the character first
Echo_(Marvel_Comics)
1960s NASA satellite communication experiment
Project Echo was a passive communications satellite experiment designed by the American National Aeronautics and Space Agency (NASA) as the first test
Project_Echo
Former US Navy unclassified miscellaneous vessel
Naval History And Heritage Command. "Echo (IX 95)". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 31 August 2019
USS_Echo
Shell commands that exit immediately with a 0/1 status
echo hello until interrupted: while true do echo hello done The commands can be used to ignore the success or failure of a sequence of other commands
True_and_false_(commands)
Software build automation tool
command may appear on the same line after the prerequisites, separated by a semicolon, targets: prerequisites ; command for example, hello: ; @echo "hello"
Make_(software)
Computer network diagnostic tool
In computing, traceroute and tracert are diagnostic command-line interface commands for displaying possible routes (paths) and transit delays of packets
Traceroute
HTTP load testing tool
report from the command-line. This example uses the echo command to output GET http://localhost/, and then executes the attack command for that output
Vegeta_(software)
Command on various operating systems
John and su into root, whoami displays root and echo $USER displays John. This is because the su command does not invoke a login shell by default. The earliest
Whoami
Code intended as a payload to exploit a software vulnerability
similarly restricted variant is ECHOable code not containing any characters which are not accepted by the ECHO command. It has been shown that it is possible
Shellcode
1996 video game
Command & Conquer: Red Alert is a real-time strategy video game in the Command & Conquer franchise, developed and published by Westwood Studios in 1996
Command_&_Conquer:_Red_Alert
Form of interprocess communication
following commands: $ cat infile | command $ echo $string | command $ echo -e 'user\npass' | ftp localhost can be replaced by: $ command < infile $ command <<<
Redirection_(computing)
Voice assistants developed by Amazon
Anthropic's Claude model. Alexa was first used in the Amazon Echo smart speaker and the Amazon Echo Dot, Echo Studio and Amazon Tap speakers developed by Amazon
Amazon_Alexa
Standard UNIX utility
echo {0..9} | xargs -n 2 0 1 2 3 4 5 6 7 8 9 In addition to running based on a specified number of arguments at a time, one can also invoke a command
Xargs
British Royal Navy (RN) survey vessel
which she was capable of embarking a dedicated mine counter measures command team. Echo operated a lean-crewed three-watch rotation system.[citation needed]
HMS_Echo_(H87)
Computer security exploit using injected code
execute a command line. Here is an example vulnerable tcsh script: #!/bin/tcsh # check arg # outputs "it matches" if the argument is 1 if ($1 == 1) echo it matches
Code_injection
1960 film by Richard Murphy
Townsville, in Australia. He is surprised to be assigned command of a sailing ship, the USS Echo, a unique ship in the Pacific Fleet. The only crew member
The Wackiest Ship in the Army (film)
The_Wackiest_Ship_in_the_Army_(film)
Cerner CCL (Cerner Command Language) is the Cerner Corporation fourth-generation programming language, which is expressed in the Cerner Discern Explorer
Cerner_CCL
off echoing through some other means. Shells executing on a Unix/Linux operating system can use the stty external command to switch off/on echoing of input
Comparison_of_command_shells
Touchscreen smart speaker produced by Amazon
Amazon Echo Show is a smart speaker with a screen that is part of the Amazon Echo line of products. Similarly to other devices in the family, it is designed
Amazon_Echo_Show
Extension to the Tcl scripting language
secure. See the example below. stty -echo send_user -- "Enter Password: " expect_user -re "(.*)\n" send_user "\n" stty echo set PASS $expect_out(1,string) Another
Expect
Computer protocol
first two commands sent to the server are FISH and VER to negotiate FISH protocol, its version and extensions. #FISH echo; start_fish_server; echo '### 200'
Files transferred over shell protocol
Files_transferred_over_shell_protocol
guns and two mortars. These reinforcements arrived aboard the aviso Echo. Command of the expedition was now given to Charner's aide-de-camp capitaine
Capture_of_Mỹ_Tho
also can be used. DPATH /? will print the append command help message. Input redirection: C:\>echo hello>c:\test\in.txt C:\batch>type c:\test\in.txt
Dpath
Submarine of the United States
skipper was sure that it was the Echo's objective, but their track continued well south of the normal course. Then the Echo slowed and came to periscope depth
USS_Guardfish_(SSN-612)
Cross-platform shell based on .NET technology
and configuration management. As is typical for a shell, it provides a command-line interpreter for interactive use and a script interpreter for automation
PowerShell
Typographical symbol (@)
suppresses the echoing of that command. In other words, is the same as ECHO OFF applied to the current line only. Normally a Windows command is executed
At_sign
Cross-platform reverse-Polish calculator program
* p EOF $ dc cal.txt 20 $ The results are also available from the commands: $ echo "4 5 * p" | dc or $ dc - 4 5*pq 20 $ dc 4 5 * p 20 q $ dc -e '4 5 *
Dc_(computer_program)
Virtual reality adventure game
Lone Echo is a 2017 virtual reality adventure game developed by Ready At Dawn, and published by Oculus Studios. Set aboard a space station orbiting Saturn
Lone_Echo
command Command to execute for each matching item. The command string typically must be wrapped in double quotes. The default command is CMD /C ECHO @FILE
Forfiles
Typographical mark (`) (Freestanding grave accent)
be re-written: $ echo "It is now $(date)" The new syntax allows nesting, for example: $ echo "An absolute path to the 'zcat' command is $( readlink -e
Backtick
Type of denial-of-service software attack
new process instead of forking from an existing one, such as with batch echo %0^|%0 > $_.cmd & $_. In this batch script, %0|%0 is written to $_.cmd, which
Fork_bomb
Script written for an operating system shell
end of the "for" loop echo 'all conversions successful' # now the script exits with 0 (default) showing success The jpg2png command can then be run on an
Shell_script
Retired United States Navy SEAL (born 1971)
LLC. Willink hosts a weekly podcast with Brazilian jiu-jitsu practitioner Echo Charles, called the Jocko Podcast. John Gretton Willink Jr. was born on September
Jocko_Willink
Support command within the U.S. Army Reserve Command
Mission Support Command (9th MSC) is a United States Army Reserve unit located in Fort Shafter, Honolulu, Hawai'i. The 9th Mission Support Command is a U.S.
9th_Mission_Support_Command
Air and space component of the Canadian Armed Forces
responsive and effective airpower". The RCAF is one of three environmental commands[definition needed] within the unified Canadian Armed Forces. As of 2020
Royal_Canadian_Air_Force
following departments: Land Forces Headquarters, in Utrecht Land Forces Command Staff (Staf Commando Landstrijdkrachten) Training & Operations Directorate
Structure of the Royal Netherlands Army
Structure_of_the_Royal_Netherlands_Army
Keyboard commands for recovering a Linux machine
user space programs (such as a command line shell), SysRq may be accessed by writing to /proc/sysrq-trigger (e.g., echo s > /proc/sysrq-trigger). Many
Magic_SysRq_key
American artificial intelligence company
Wang, Echo (September 29, 2026). "Anthropic's IPO prospectus shows sweeping AI vision, surging costs". Reuters. Retrieved October 14, 2026. Wang, Echo (September
Anthropic
Command line interpreter for Version 10 Unix and Plan 9 from Bell Labs operating systems
then echo hello, world else case $2 in 1) echo "$#" 'hey' "jude's$3";; 2) echo `date` :"$*": :"$@":;; *) echo why not 1>&2 esac for i in a b c; do echo "$i"
Rc_(Unix_shell)
Shell command for deleting files
remove, is a shell command for removing files (which includes special files such as directories) from the file system. The command may not actually delete
Rm_(Unix)
Indian army command
reverted to four commands again: Eastern Command, Northern Command, Southern Command and Western Command. On 1 November 1920, the Eastern Command was formed
Eastern_Command_(India)
Failed coup d'état in South Korea
Special Warfare Command to prevent the vote. At 04:30, Yoon and his cabinet lifted martial law and soon disbanded the Martial Law Command. The opposition
2024 South Korean martial law crisis
2024_South_Korean_martial_law_crisis
Shell command for extracting the directory path portion from a path
used instead: echo "${file%/*}"; Or, if relative pathnames need to be handled as well: if [ -n "${file##*/*}" ]; then echo "." else echo "${file%/*}";
Dirname
Program that emulates a video terminal
echo mode and does not require local echo. When entering a password, for example, line-at-a-time entry with local editing is possible, but local echo
Terminal_emulator
This is a list of the shell commands of the most recent version of the Portable Operating System Interface (POSIX) – IEEE Std 1003.1-2024 which is part
List_of_POSIX_commands
Australian high fantasy novel by James Islington
An Echo of Things to Come is a 2017 Australian high fantasy novel by James Islington. It is the second book in The Licanius Trilogy, preceded by The Shadow
An_Echo_of_Things_to_Come
Fictional class of soldiers in the Star Wars series
Corporal Echo, the ARC Trooper who was presumed dead on Lola Sayu but was in truth captured by the Techno Union. After the successful mission, Echo decides
Clone_trooper
2021 video game
Echo Generation is a 2021 role-playing adventure game developed and published by Canadian independent studio Cococucumber. Set in 1993, it follows a group
Echo_Generation
Programming languages parsing of command-line arguments
create an array from command-line arguments in the -foo:bar format, the following might be used: $args = parseArgs($argv); echo getArg($args, "foo");
Command-line_argument_parsing
Russian and French pianist (born 1972)
Russian and French pianist. Volodos has won a number of awards, including the Echo Klassik, Gramophone Award, Diapason d'Or, and Edison Award for his discography
Arcadi_Volodos
Bugle call, played during military funerals or patriotic ceremonies
silence until 2200 (10:00 p.m.) when "Echo Taps" is sounded, at which time unit commanders tacitly will give the commands of attention and present arms. The
Taps_(bugle_call)
Shell command for copying files
is a file or a directory >cmd /c echo F | xcopy "c:\directory 1\myfile" "c:\directory 2\myfile" List of DOS commands Peripheral Interchange Program Software
XCOPY
Windows environment variable containing the directory path to the command shell
execute command lines with its builtin FOR command. The variable's contents can be displayed by typing SET COMSPEC or ECHO %COMSPEC% at the command prompt
COMSPEC
Task scheduling shell command
average is below a certain value. A sample command to compile a C program at 11:45 a.m. on January 31 would be: $ echo "cc -o foo foo.c" | at 1145 jan 31 or
At_(command)
Family of IEEE standards for compatibility between operating systems
programming interface (API), command-line shell, and shell commands, originally derived from commonly-found Unix APIs, shells, and commands (partly because Unix
POSIX
Multi-purpose hydrographic survey ships
countermeasures command vessel. Capable of embarking a dedicated mine countermeasures team and supporting other MCM vessels. Side-scan sonar; Multi-beam echo sounder;
Echo-class_survey_ship_(2002)
Communications satellite
the C band: 4.1986 & 4.1996 GHz Command: 5.926 & 6.423 GHz Spaceflight portal 1995 in spaceflight Krebs, Gunter. "EchoSatr 1, 2". Gunter's Space Page.
EchoStar_I
Combatant command for Africa
The United States Africa Command (USAFRICOM, U.S. AFRICOM, and AFRICOM) is one of the eleven unified combatant commands of the United States Department
United_States_Africa_Command
Act of overwriting a resource
fails with an error message. For example: $ echo "Hello, world" >file.txt $ cat file.txt Hello, world $ echo "This will overwrite the first greeting." >file
Clobbering
Elite US Army light infantry unit
also known as the Rangers, is the United States Army Special Operations Command's premier light-infantry and special operations force. The regiment is headquartered
75th_Ranger_Regiment
British Royal Navy officer
entered the navy on 1 March 1788 as a captain's servant aboard the sloop Echo, commanded by Captain Robert Carthew Reynolds. He remained in her, stationed at
Charles Ross (Royal Navy officer)
Charles_Ross_(Royal_Navy_officer)
Part of the Kosovo War in 1999
Operation Echo was the codename given by the Canadian Forces for its air activities during the Kosovo War in 1999. In support of the NATO Operation Allied
Operation_Echo
2022 video game
Echoes of Mana was a 2022 action role-playing video game developed by Wright Flyer Studios and published by Square Enix for Android and iOS devices as
Echoes_of_Mana
Network of tunnels in Ho Chi Minh City, Vietnam
the tunnels by the American troops. American soldiers used the term "Black Echo" to describe the conditions within the tunnels. For the Viet Cong, life in
Củ_Chi_tunnels
AI-assisted software development platform by Google
a standalone desktop application for managing agents, together with a command-line interface (CLI) and a software development kit (SDK). The original
Google_Antigravity
Feature of Unix shells and some programming languages
line breaks. This is an example of command substitution using the () operator in PowerShell: $MyVariable = (ls) echo $MyVariable A related facility, expression
Command_substitution
American multinational technology company
Retrieved June 28, 2026. Command Line Heroes Team (November 10, 2020). "Dr. Mark Dean: The Inventor Who Made the Computer Personal". Command Line Heroes. Red
IBM
suited' to a live af labour", while the name closely resembling "mule" echos derogatory "slang used for people of mixed heritage." Nikal Pakubrazi Paraelemental
List of Advanced Dungeons & Dragons 2nd edition monsters
List_of_Advanced_Dungeons_&_Dragons_2nd_edition_monsters
travel, tourism, insurance
ECHO COMMAND
ECHO COMMAND
ECHO COMMAND
ECHO COMMAND
ECHO COMMAND
ECHO COMMAND
ECHO COMMAND
ECHO COMMAND
ECHO COMMAND
travel, tourism, insurance