【J】Linuxコマンドリファレンス

Jから始まるコマンド一覧

join


"OPTION -h"
/bin/join: 無効なオプション -- 'h'
詳しくは '/bin/join --help' を実行して下さい。

journalctl


"OPTION -h"
journalctl [OPTIONS...] [MATCHES...]

Query the journal.

Source Options:
     --system                Show the system journal
     --user                  Show the user journal for the current user
  -M --machine=CONTAINER     Operate on local container
  -m --merge                 Show entries from all available journals
  -D --directory=PATH        Show journal files from directory
     --file=PATH             Show journal file
     --root=PATH             Operate on an alternate filesystem root
     --image=PATH            Operate on disk image as filesystem root
     --image-policy=POLICY   Specify disk image dissection policy
     --namespace=NAMESPACE   Show journal data from specified journal namespace

Filtering Options:
  -S --since=DATE            Show entries not older than the specified date
  -U --until=DATE            Show entries not newer than the specified date
  -c --cursor=CURSOR         Show entries starting at the specified cursor
     --after-cursor=CURSOR   Show entries after the specified cursor
     --cursor-file=FILE      Show entries after cursor in FILE and update FILE
  -b --boot[=ID]             Show current boot or the specified boot
  -u --unit=UNIT             Show logs from the specified unit
     --user-unit=UNIT        Show logs from the specified user unit
  -t --identifier=STRING     Show entries with the specified syslog identifier
  -p --priority=RANGE        Show entries with the specified priority
     --facility=FACILITY...  Show entries with the specified facilities
  -g --grep=PATTERN          Show entries with MESSAGE matching PATTERN
     --case-sensitive[=BOOL] Force case sensitive or insensitive matching
  -k --dmesg                 Show kernel message log from the current boot

Output Control Options:
  -o --output=STRING         Change journal output mode (short, short-precise,
                               short-iso, short-iso-precise, short-full,
                               short-monotonic, short-unix, verbose, export,
                               json, json-pretty, json-sse, json-seq, cat,
                               with-unit)
     --output-fields=LIST    Select fields to print in verbose/export/json modes
  -n --lines[=[+]INTEGER]    Number of journal entries to show
  -r --reverse               Show the newest entries first
     --show-cursor           Print the cursor after all the entries
     --utc                   Express time in Coordinated Universal Time (UTC)
  -x --catalog               Add message explanations where available
     --no-hostname           Suppress output of hostname field
     --no-full               Ellipsize fields
  -a --all                   Show all fields, including long and unprintable
  -f --follow                Follow the journal
     --no-tail               Show all lines, even in follow mode
     --truncate-newline      Truncate entries by first newline character
  -q --quiet                 Do not show info messages and privilege warning

Pager Control Options:
     --no-pager              Do not pipe output into a pager
  -e --pager-end             Immediately jump to the end in the pager

Forward Secure Sealing (FSS) Options:
     --interval=TIME         Time interval for changing the FSS sealing key
     --verify-key=KEY        Specify FSS verification key
     --force                 Override of the FSS key pair with --setup-keys

Commands:
  -h --help                  Show this help text
     --version               Show package version
  -N --fields                List all field names currently used
  -F --field=FIELD           List all values that a specified field takes
     --list-boots            Show terse information about recorded boots
     --disk-usage            Show total disk usage of all journal files
     --vacuum-size=BYTES     Reduce disk usage below specified size
     --vacuum-files=INT      Leave only the specified number of journal files
     --vacuum-time=TIME      Remove journal files older than specified time
     --verify                Verify journal file consistency
     --sync                  Synchronize unwritten journal messages to disk
     --relinquish-var        Stop logging to disk, log to temporary file system
     --smart-relinquish-var  Similar, but NOP if log directory is on root mount
     --flush                 Flush all journal data from /run into /var
     --rotate                Request immediate rotation of the journal files
     --header                Show journal header information
     --list-catalog          Show all message IDs in the catalog
     --dump-catalog          Show entries in the message catalog
     --update-catalog        Update the message catalog database
     --setup-keys            Generate a new FSS key pair

See the journalctl(1) man page for details.

jpgicc


"OPTION -h"
Little CMS ICC profile applier for JPEG - v3.4 [LittleCMS 2.14]

Copyright (c) 1998-2022 Marti Maria Saguer. See COPYING file for details.
[jpgicc fatal error]: Unknown option - run without args to see valid ones

jq


"OPTION -h"
jq - commandline JSON processor [version 1.7]

Usage:    /bin/jq [options] <jq filter> [file...]
    /bin/jq [options] --args <jq filter> [strings...]
    /bin/jq [options] --jsonargs <jq filter> [JSON_TEXTS...]

jq is a tool for processing JSON inputs, applying the given filter to
its JSON text inputs and producing the filter's results as JSON on
standard output.

The simplest filter is ., which copies jq's input to its output
unmodified except for formatting. For more advanced filters see
the jq(1) manpage ("man jq") and/or https://jqlang.github.io/jq/.

Example:

    $ echo '{"foo": 0}' | jq .
    {
      "foo": 0
    }

Command options:
  -n, --null-input          use `null` as the single input value;
  -R, --raw-input           read each line as string instead of JSON;
  -s, --slurp               read all inputs into an array and use it as
                            the single input value;
  -c, --compact-output      compact instead of pretty-printed output;
  -r, --raw-output          output strings without escapes and quotes;
      --raw-output0         implies -r and output NUL after each output;
  -j, --join-output         implies -r and output without newline after
                            each output;
  -a, --ascii-output        output strings by only ASCII characters
                            using escape sequences;
  -S, --sort-keys           sort keys of each object on output;
  -C, --color-output        colorize JSON output;
  -M, --monochrome-output   disable colored output;
      --tab                 use tabs for indentation;
      --indent n            use n spaces for indentation (max 7 spaces);
      --unbuffered          flush output stream after each output;
      --stream              parse the input value in streaming fashion;
      --stream-errors       implies --stream and report parse error as
                            an array;
      --seq                 parse input/output as application/json-seq;
  -f, --from-file file      load filter from the file;
  -L directory              search modules from the directory;
      --arg name value      set $name to the string value;
      --argjson name value  set $name to the JSON value;
      --slurpfile name file set $name to an array of JSON values read
                            from the file;
      --rawfile name file   set $name to string contents of file;
      --args                consume remaining arguments as positional
                            string values;
      --jsonargs            consume remaining arguments as positional
                            JSON values;
  -e, --exit-status         set exit status code based on the output;
  -V, --version             show the version;
  --build-configuration     show jq's build configuration;
  -h, --help                show the help;
  --                        terminates argument processing;

Named arguments are also available as $ARGS.named[], while
positional arguments are available as $ARGS.positional[].

json-patch-jsondiff


"OPTION -h"
usage: json-patch-jsondiff [-h] [--indent INDENT] [-v] FILE1 FILE2

Diff two JSON files

positional arguments:
  FILE1
  FILE2

options:
  -h, --help       show this help message and exit
  --indent INDENT  Indent output by n spaces
  -v, --version    show program's version number and exit

json_pp


"OPTION -h"
Unknown option: h
Usage: /bin/json_pp [-V] [-f from_format] [-t to_format] [-json_opt options_to_json1[,options_to_json2[,...]]]

jsondiff


"OPTION -h"
usage: jsondiff [-h] [--indent INDENT] [-v] FILE1 FILE2

Diff two JSON files

positional arguments:
  FILE1
  FILE2

options:
  -h, --help       show this help message and exit
  --indent INDENT  Indent output by n spaces
  -v, --version    show program's version number and exit

jsonpatch


"OPTION -h"
usage: jsonpatch [-h] [--indent INDENT] [-b] [-i] [-v] [-u] ORIGINAL [PATCH]

Apply a JSON patch on a JSON file

positional arguments:
  ORIGINAL              Original file
  PATCH                 Patch file (read from stdin if omitted)

options:
  -h, --help            show this help message and exit
  --indent INDENT       Indent output by n spaces
  -b, --backup          Back up ORIGINAL if modifying in-place
  -i, --in-place        Modify ORIGINAL in-place instead of to stdout
  -v, --version         show program's version number and exit
  -u, --preserve-unicode
                        Output Unicode character as-is without using Code
                        Point

jsonpointer


"OPTION -h"
usage: jsonpointer [-h] [-f [POINTER_FILE]] [--indent INDENT] [-v]
                   [POINTER] FILE [FILE ...]

Resolve a JSON pointer on JSON files

positional arguments:
  POINTER               A JSON pointer expression
  FILE                  Files for which the pointer should be resolved

options:
  -h, --help            show this help message and exit
  -f [POINTER_FILE], --pointer-file [POINTER_FILE]
                        File containing a JSON pointer expression
  --indent INDENT       Indent output by n spaces
  -v, --version         show program's version number and exit

jsonschema


"OPTION -h"
usage: jsonschema [-h] [-i INSTANCES] [-F ERROR_FORMAT] [-o {plain,pretty}]
                  [-V VALIDATOR] [--base-uri BASE_URI] [--version]
                  schema

JSON Schema Validation CLI

positional arguments:
  schema                the path to a JSON Schema to validate with (i.e.
                        schema.json)

options:
  -h, --help            show this help message and exit
  -i INSTANCES, --instance INSTANCES
                        a path to a JSON instance (i.e. filename.json) to
                        validate (may be specified multiple times). If no
                        instances are provided via this option, one will be
                        expected on standard input.
  -F ERROR_FORMAT, --error-format ERROR_FORMAT
                        the format to use for each validation error message,
                        specified in a form suitable for str.format. This
                        string will be passed one formatted object named
                        'error' for each ValidationError. Only provide this
                        option when using --output=plain, which is the
                        default. If this argument is unprovided and
                        --output=plain is used, a simple default
                        representation will be used.
  -o {plain,pretty}, --output {plain,pretty}
                        an output format to use. 'plain' (default) will
                        produce minimal text with one line for each error,
                        while 'pretty' will produce more detailed human-
                        readable output on multiple lines.
  -V VALIDATOR, --validator VALIDATOR
                        the fully qualified object name of a validator to use,
                        or, for validators that are registered with
                        jsonschema, simply the name of the class.
  --base-uri BASE_URI   a base URI to assign to the provided schema, even if
                        it does not declare one (via e.g. $id). This option
                        can be used if you wish to resolve relative references
                        to a particular URI (or local path)
  --version             show program's version number and exit