107 lines
2.9 KiB
Plaintext
107 lines
2.9 KiB
Plaintext
---
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layout: "docs"
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page_title: "Commands: fs"
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sidebar_current: "docs-commands-fs"
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description: >
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Introspect an allocation directory on a Nomad client
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---
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# Command: fs
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The `fs` command allows a user to navigate an allocation directory on a Nomad
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client. The following functionalities are available - `cat`, `tail`, `ls` and
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`stat`.
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* `cat`: If the target path is a file, Nomad will `cat` the file.
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* `tail`: If the target path is a file and `-tail` flag is specified, Nomad will
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`tail` the file.
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* `ls`: If the target path is a directory, Nomad displays the name of a file and
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directories and their associated information.
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* `stat`: If the `-stat` flag is used, Nomad will display information about a
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file.
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## Usage
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```
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nomad fs [options] <alloc-id> <path>
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```
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This command accepts a path and single allocation ID unless the `-job` flag is
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specified, in which case an allocation is chosen for the given job. The path is
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relative to the root of the allocation directory. The path is optional and it
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defaults to `/` of the allocation directory.
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## General Options
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<%= general_options_usage %>
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## Fs Options
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* `-H`: Machine friendly output.
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* `-verbose`: Display verbose output.
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* `-job`: Use a random allocation from the specified job, prefering a running
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allocation.
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* `-stat`: Show stat information instead of displaying the file, or listing the
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directory.
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* `-f`: Causes the output to not stop when the end of the file is reached, but
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rather to wait for additional output.
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* `-tail`: Show the files contents with offsets relative to the end of the file.
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If no offset is given, -n is defaulted to 10.
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* `-n`: Sets the tail location in best-efforted number of lines relative to the
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end of the file.
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* `-c`: Sets the tail location in number of bytes relative to the end of the file.
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## Examples
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```
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$ nomad fs eb17e557
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Mode Size Modified Time Name
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drwxrwxr-x 4096 28 Jan 16 05:39 UTC alloc/
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drwxrwxr-x 4096 28 Jan 16 05:39 UTC redis/
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-rw-rw-r-- 0 28 Jan 16 05:39 UTC redis_exit_status
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$ nomad fs eb17e557 redis/local
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Mode Size Modified Time Name
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-rw-rw-rw- 0 28 Jan 16 05:39 UTC redis.stderr
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-rw-rw-rw- 17 28 Jan 16 05:39 UTC redis.stdout
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$ nomad fs -stat eb17e557 redis/local/redis.stdout
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Mode Size Modified Time Name
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-rw-rw-rw- 17 28 Jan 16 05:39 UTC redis.stdout
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$ nomad fs eb17e557 redis/local/redis.stdout
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foobar
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baz
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$ nomad fs -tail -f -n 3 eb17e557 redis/local/redis.stdout
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foobar
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baz
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bam
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<blocking>
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```
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## Using Job ID instead of Allocation ID
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Setting the `-job` flag causes a random allocation of the specified job to be
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selected. Nomad will prefer to select a running allocation ID for the job, but
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if no running allocations for the job are found, Nomad will use a dead
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allocation.
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```
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nomad fs -job <job-id> <path>
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```
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This can be useful for debugging a job that has multiple allocations, and it's
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not really required to use a specific allocation ID.
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