1JOSE-FMT(1)                                                        JOSE-FMT(1)
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NAME

6       jose-fmt - Converts JSON between serialization formats
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SYNOPSIS

9       jose fmt [OPTIONS]
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OVERVIEW

12       This jose fmt command provides a mechanism for building and parsing
13       JSON objects from the command line. It operates as a simple stack
14       machine. All commands operate on the TOP item of the stack and,
15       occasionally, the PREV item of the stack. Commands that require a
16       specific type of value will indicate it in parentheses. For example:
17       "TOP (arr.)".
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19       This program returns 0 on success or the index of the option which
20       failed.
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OPTIONS

23       •   -0, --null : Assert TOP to be null
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25       •   -a, --append : Append TOP to the end of PREV (arr.)
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27       •   -a, --append : Set missing values from TOP (obj.) into PREV (obj.)
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29       •   -A, --array : Assert TOP to be an array
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31       •   -B, --boolean : Assert TOP to be a boolean
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33       •   -c, --copy : Deep copy TOP, push onto TOP
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35       •   -d NAME, --delete=NAME : Delete NAME from TOP (obj.)
36
37       •   -d , --delete= : Delete # from TOP (arr.)
38
39       •   -d -, --delete=- : Delete # from the end of TOP (arr.)
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41       •   -e, --empty : Erase all items from TOP (arr./obj.)
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43       •   -E, --equal : Assert TOP to be equal to PREV
44
45       •   -f FILE, --foreach=FILE : Write TOP (obj./arr.) to FILE, one
46           line/item
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48       •   -f -, --foreach=- : Write TOP (obj./arr.) to STDOUT, one line/item
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50       •   -F, --false : Assert TOP to be false
51
52       •   -g NAME, --get=NAME : Get item with NAME from TOP (obj.), push to
53           TOP
54
55       •   -g , --get= : Get # item from TOP (arr.), push to TOP
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57       •   -g -, --get=- : Get # item from the end of TOP (arr.), push to TOP
58
59       •   -i , --insert= : Insert TOP into PREV (arr.) at #
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61       •   -I, --integer : Assert TOP to be an integer
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63       •   -j JSON, --json=JSON : Parse JSON constant, push onto TOP
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65       •   -j FILE, --json=FILE : Read from FILE, push onto TOP
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67       •   -j -, --json=- : Read from STDIN, push onto TOP
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69       •   -l, --length : Push length of TOP (arr./str./obj.) to TOP
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71       •   -M , --move= : Move TOP back # places on the stack
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73       •   -N, --number : Assert TOP to be a number
74
75       •   -o FILE, --output=FILE : Write TOP to FILE
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77       •   -o -, --output=- : Write TOP to STDOUT
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79       •   -O, --object : Assert TOP to be an object
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81       •   -q STR, --quote=STR : Convert STR to a string, push onto TOP
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83       •   -Q, --query : Query the stack by deep copying and pushing onto TOP
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85       •   -R, --real : Assert TOP to be a real
86
87       •   -s NAME, --set=NAME : Sets TOP into PREV (obj.) with NAME
88
89       •   -s , --set= : Sets TOP into PREV (obj.) at #
90
91       •   -s -, --set=- : Sets TOP into PREV (obj.) at # from the end
92
93       •   -S, --string : Assert TOP to be a string
94
95       •   -t , --truncate= : Shrink TOP (arr.) to length #
96
97       •   -t -, --truncate=- : Discard last # items from TOP (arr.)
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99       •   -T, --true : Assert TOP to be true
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101       •   -u FILE, --unquote=FILE : Write TOP (str.) to FILE without quotes
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103       •   -u -, --unquote=- : Write TOP (str.) to STDOUT without quotes
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105       •   -U, --unwind : Discard TOP from the stack
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107       •   -x, --extend : Append items from TOP to the end of PREV (arr.)
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109       •   -x, --extend : Set all values from TOP (obj.) into PREV (obj.)
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111       •   -X, --not : Invert the following assertion
112
113       •   -y, --b64load : URL-safe Base64 decode TOP (str.), push onto TOP
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115       •   -Y, --b64dump : URL-safe Base64 encode TOP, push onto TOP
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EXAMPLES

118       Extract the alg parameter from a JWE Protected Header:
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120           $ jose fmt -j "$jwe" -Og protected -yOg alg -Su-
121           A128KW
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123       List all JWKs in a JWKSet (one per line):
124
125           $ echo "$jwkset" | jose fmt -j- -Og keys -Af-
126           {"kty":"oct",...}
127           {"kty":"EC",...}
128
129       Change the algorithm in a JWK:
130
131           $ echo "$jwk" | jose fmt -j- -j '"A128GCM"' -s alg -Uo-
132           {"kty":"oct","alg":"A128GCM",...}
133
134       Build a JWE template:
135
136           $ jose fmt -j '{}' -cs unprotected -q A128KW -s alg -UUo-
137           {"unprotected":{"alg":"A128KW"}}
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AUTHOR

140       Nathaniel McCallum <npmccallum@redhat.com>
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144                                  05/07/2021                       JOSE-FMT(1)