but we can suspend that task and make it run in the background by suspending it withCtrl+zfollowed bybg.Now we havescript1.shrunning in the background, and room to run any other script, in this case, it will bescript2.shto output“Hello World!!”. ...
Running a command in the background Summary Essential Commands Distinguishing command types Essential Bash builtin commands The type command The echo command The printf command The pwd command Tilde paths The cd command Changing the directory in scripts The set command The declare command The test [...
for element in "${array[@]}" do echo "$element" done for index in "${!array[@]}" do echo "$index ${array[index]}" done $ grep pattern file | tr '\n' ' '把多行字符串合并成一行:How to concatenate multiple lines of output to one line?
Used to reads and runs commands from a designated file in the current shell. alias Used to define an alias for a specific command. bg Run a job in background mode. bind Used to bind a keyboard sequence. break Used to exit from a running loop in script. cd Change the directory to ano...
-x echo commands after command-line processing.bash -n scriptname bash -v scriptname bash -x scriptname5. Multi-threadingYou can easily multi-threading your jobs using &. All those jobs will then run in the background simultaneously and you can see the processes below are running using ...
batch Used to run commands entered on a standard input. bc Access the GNU bc calculator utility. bg Send processes to the background. biff Notify about incoming mail and sender’s name on a system running comsat server. bind Used to attach a name to a socket. bison A GNU parser generato...
$!represents the process ID (PID) of the last background command executed. It’s useful for tracking or controlling background processes in scripts. What is a shell script in Linux? A shell script in Linux is a text file containing a series of commands. The shell reads this file and exe...
. Used to reads and runs commands from a designated file in the current shell. alias Used to define an alias for a specific command. bg Run a job in background mode. bind Used to bind a keyboard sequence. break Used to exit from a running loop in script. cd Change the directory to...
If a command is terminated by the control operator &, the shell executes the command in the background in a subshell. The shell does not wait for the command to finish, and the return status is 0. Commands separated by a ; are executed sequentially; the shell waits for each command to...
A HereDoc is convenient for executing multiple commands on a remote machine. Pass a HereDoc to theSSH connectionto run multiple commands. For example: ssh username@host << EOF echo "Local user: $USER" echo "Remote user: \$USER" EOF ...