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How do I run multiple commands in FIND exec?
Linux Find exec multiple commands syntaxes
- {} Is a placeholder for the result found by find.
- \; Says that for each found result, the command cmd is executed once with the found result.
- It is executed like this: cmd result1; cmd result2; …; cmd result N.
How do I run two commands sequentially in Unix?
The semicolon (;) operator allows you to execute multiple commands in succession, regardless of whether each previous command succeeds. For example, open a Terminal window (Ctrl+Alt+T in Ubuntu and Linux Mint). Then, type the following three commands on one line, separated by semicolons, and press Enter.
How can I use multiple commands with xargs?
We can use multiple commands with xargs by using the -I (initial arguments) option. This option defines a “replace-string.” Wherever the token for the replace-string appears in the command line, the values that were supplied to xargs are inserted.
When to run command2 only if command1 succeeded?
Using a single ampersand (&) will cause the first command and then the second command to be run in sequence. Using double ampersands (&&) introduces error checking. The second command will run only if the first command is successful. command2 is executed if, and only if, command1 returns an exit status of zero.
How is the output of xargs written to the terminal?
The output is written to the terminal window, as one long stream of text. It’s this capability that let’s xargs feed parameters into other commands. We can use xargs to easily have wc count the words, characters, and lines in multiple files. ls lists the *.page files and passes the list to xargs.
What is the null terminator option in xargs?
If filenames have spaces and strange characters in them—such as newline characters— xargs will not be able to interpret them correctly. We can overcome that problem by using the -0 (null terminator) option. This tells xargs to use the null character as the final delimiter for filenames.