github.com/lmorg/murex@v0.0.0-20240217211045-e081c89cd4ef/docs/parser/logical-or.md (about) 1 # `||` Or Logical Operator 2 3 > Continues next operation only if previous operation fails 4 5 ## Description 6 7 When in the **normal** run mode (see "schedulers" link below) this will only 8 run the command on the right hand side if the command on the left hand side 9 does not error. Neither STDOUT nor STDERR are piped. 10 11 This has no effect in `try` nor `trypipe` run modes because they automatically 12 apply stricter error handling. See detail below. 13 14 15 16 ## Examples 17 18 **Second command does not run because the first command doesn't error:** 19 20 ``` 21 » out one || out two 22 one 23 ``` 24 25 **Second command does run because the first command produces an error:** 26 27 ``` 28 » err one || out two 29 one 30 two 31 ``` 32 33 ## Detail 34 35 This has no effect in `try` nor `trypipe` run modes because they automatically 36 apply stricter error handling. You can achieve a similar behavior in `try` with 37 the following code: 38 39 ``` 40 try { 41 err one -> !if { out two } 42 } 43 ``` 44 45 There is no workaround for `trypipe`. 46 47 ## See Also 48 49 * [Pipeline](../user-guide/pipeline.md): 50 Overview of what a "pipeline" is 51 * [Schedulers](../user-guide/schedulers.md): 52 Overview of the different schedulers (or 'run modes') in Murex 53 * [`&&` And Logical Operator](../parser/logical-and.md): 54 Continues next operation if previous operation passes 55 * [`?:` Elvis Operator](../parser/elvis.md): 56 Returns the right operand if the left operand is falsy (expression) 57 * [`?` STDERR Pipe](../parser/pipe-err.md): 58 Pipes STDERR from the left hand command to STDIN of the right hand command (DEPRECATED) 59 * [`err`](../commands/err.md): 60 Print a line to the STDERR 61 * [`out`](../commands/out.md): 62 Print a string to the STDOUT with a trailing new line character 63 * [`try`](../commands/try.md): 64 Handles non-zero exits inside a block of code 65 * [`trypipe`](../commands/trypipe.md): 66 Checks for non-zero exits of each function in a pipeline 67 68 <hr/> 69 70 This document was generated from [gen/parser/logical_ops_doc.yaml](https://github.com/lmorg/murex/blob/master/gen/parser/logical_ops_doc.yaml).