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Is there a way to combine two commands in Bash?
For the special case of combining multiple BASH command outputs onto one line, here’s a recipe to run each command in turn, removing any newlines between their outputs. (Note: this method only works if the commands exit. For combining stdout from commands that don’t exit, see other answers.)
How to redirect the output of two commands?
Neither command exits so I’m not sure how to do this. so far, you can redirect the group to a file ( last ; before } is mandatory), and the space between the open and closing bracket too. More generally, it’s possible to use either a subshell or command grouping, and redirect the output of the whole group at once.
How to concatenate the output of two commands?
I need a command (or sequence of piped commands) C that concatenates the output of commands A and B on the same line and inserts 1 space character between them. For example, suppose the output of command A is the string between the quotation marks here:
How to pass the output of a command as an argument?
xargs is the best option to place output from a command into the argument of other commmand. Suppose the output of command1 is 3 and you want your next command to take this 3 as an argument so you want something like
How to combine and execute multiple commands in Linux?
We may misspell a particular command, which may lead to unintended consequences It’s time-consuming and annoying to run multiple commands one-by-one To prevent such situations and obtain the expected result, we can combine and execute multiple commands in the command line. 3. Concatenate Commands With “;”
Is it possible to run multiple aliases in Bash?
Contrary to functions, which are executed as commands, aliases are expanded into the current command, which will lead to very unexpected issues when combining this alias “command” with other commands. They also don’t work in scripts. Does this not work? Add this function to your ~/.bashrc and restart your terminal or run source ~/.bashrc
How to concatenate multiple commands in one line?
Concatenate Commands With “;” The “;” operator executes all commands regardless of whether the previous ones failed or not. After logging into the server, we can execute the following commands: Nevertheless, we can concatenate all of the above tasks in a single line using the “;“ operator:
How to get the exit status of a process in Bash?
Bash also has an array variable called $PIPESTATUS ( $pipestatus in zsh) which contains the exit status of all the programs in the last pipeline. You can use the 3rd command example to get the specific value in the pipeline that you need. This is the most unwieldy of the solutions. Run each command separately and capture the status
How to pipe output from two different commands?
Execute argument. $* returns all arguments as a string. The output of that command goes to script standard output by default. So the stdout of magicalUnionThing will be its stdin + stdout of the command that is passed as argument. There are of course simpler ways, as per other answers.
How to get exit status of process piped to another?
If you are using zsh, the array is called pipestatus (case matters!) and the array indices start at one: To combine them within a function in a manner that doesn’t lose the values: Run the above in bash or zsh and you’ll get the same results; only one of retval_bash and retval_zsh will be set.