If a long option shows an argument as mandatory, then it is mandatory for the equivalent short option also. Similarly for optional arguments.
Option -l with no FORMAT nor CHARSET list available charsets and surfaces. FORMAT is `decimal', `octal', `hexadecimal' or `full' (or one of `dohf'). Unless DEFAULT_CHARSET is set in environment, CHARSET defaults to `Latin-1'. LN is some language, it may be `c', `perl' or `po'; `c' is the default.
REQUEST is SUBREQUEST[,SUBREQUEST]...; SUBREQUEST is ENCODING[..ENCODING]... ENCODING is [CHARSET][/[SURFACE]]...; REQUEST often looks like BEFORE..AFTER, with BEFORE and AFTER being charsets. An omitted CHARSET implies the usual charset; an omitted [/SURFACE]... means the implied surfaces for CHARSET; a / with an empty surface name means no surfaces at all. See the manual.
If none of -i and -p are given, presume -p if no FILE, else -i. Each FILE is recoded over itself, destroying the original. If no FILE is specified, then act as a filter and recode stdin to stdout.
should give you access to the complete manual.
/21-Permutation swabytes /4321-Permutation /Base64 64 b64 /CR /CR-LF cl /data /Decimal-1 d d1 /Decimal-2 d2 /Decimal-4 d4 /Hexadecimal-1 x x1 /Hexadecimal-2 x2 /Hexadecimal-4 x4 /Octal-1 o o1 /Octal-2 o2 /Octal-4 o4 /Quoted-Printable QP quote-printable /test7 /test8 /test15 /test16 AFRFUL-102-BPI_OCIL bambara bra ewondo fulfulde AFRFUL-103-BPI_OCIL t-bambara t-bra t-ewondo t-fulfulde AFRL1-101-BPI_OCIL t-fra t-francais AFRLIN-104-BPI_OCIL lin lingala sango wolof AFRLIN-105-BPI_OCIL t-lin t-lingala t-sango t-wolof ANSI_X3.4-1968 367/CR-LF ANSI_X3.4-1986 ASCII CP367/CR-LF IBM367/CR-LF ISO646-US iso-ir-6 ISO_646.irv:1991 us US-ASCII Apple-Mac/CR ASCII-BS BS ASMO_449 arabic7 iso-ir-89 ISO_9036 AtariST baltic iso-ir-179 Bang-Bang BS_4730 gb ISO646-GB iso-ir-4 uk BS_viewdata iso-ir-47 CDC-NOS NOS combined-UCS-2 co CORK T1 count-characters CP1250/CR-LF 1250/CR-LF ms-ee windows-1250 CP1251/CR-LF 1251/CR-LF ms-cyrl windows-1251 CP1252/CR-LF 1252/CR-LF ms-ansi windows-1252 CP1253/CR-LF 1253/CR-LF ms-greek windows-1253 CP1254/CR-LF 1254/CR-LF ms-turk windows-1254 CP1255/CR-LF 1255/CR-LF ms-hebr windows-1255 CP1256/CR-LF 1256/CR-LF ms-arab windows-1256 CP1257/CR-LF 1257/CR-LF WinBaltRim windows-1257 CSA_Z243.4-1985-1 ca csa7-1 ISO646-CA iso-ir-121 CSA_Z243.4-1985-2 csa7-2 ISO646-CA2 iso-ir-122 CSA_Z243.4-1985-gr iso-ir-123 CSN_369103 iso-ir-139 koi8l2 KOI-8_L2 CWI cp-hu CWI-2 DEC-MCS dec DIN_66003 de ISO646-DE iso-ir-21 DS_2089 dk DS2089 ISO646-DK dump-with-names EBCDIC EBCDIC-AT-DE EBCDIC-AT-DE-A EBCDIC-CA-FR EBCDIC-CCC EBCDIC-DK-NO EBCDIC-DK-NO-A EBCDIC-ES EBCDIC-ES-A EBCDIC-ES-S EBCDIC-FI-SE EBCDIC-FI-SE-A EBCDIC-FR EBCDIC-IBM EBCDIC-IS-FRISS friss EBCDIC-IT EBCDIC-PT EBCDIC-UK EBCDIC-US ECMA-cyrillic ECMA-113 ECMA-113:1986 iso-ir-111 ES ISO646-ES iso-ir-17 ES2 ISO646-ES2 iso-ir-85 flat GB_1988-80 cn ISO646-CN iso-ir-57 GOST_19768-87 iso-ir-153 ST_SEV_358-88 greek7 iso-ir-88 greek7-old iso-ir-18 greek-ccitt iso-ir-150 hp-roman8 r8 roman8 HTML-i18n 2070 RFC2070 HTML_1.1 h1 HTML_2.0 1866 h2 RFC1866 HTML_3.2 h3 HTML_4.0 h h4 HTML IBM037/CR-LF 037/CR-LF CP037/CR-LF ebcdic-cp-ca ebcdic-cp-nl ebcdic-cp-us ebcdic-cp-wt IBM038/CR-LF 038/CR-LF CP038/CR-LF EBCDIC-INT IBM256/CR-LF 256/CR-LF CP256/CR-LF EBCDIC-INT1 IBM273/CR-LF 273/CR-LF CP273/CR-LF IBM274/CR-LF 274/CR-LF CP274/CR-LF EBCDIC-BE IBM275/CR-LF 275/CR-LF CP275/CR-LF EBCDIC-BR IBM277/CR-LF EBCDIC-CP-DK EBCDIC-CP-NO IBM278/CR-LF 278/CR-LF CP278/CR-LF ebcdic-cp-fi ebcdic-cp-se IBM280/CR-LF 280/CR-LF CP280/CR-LF ebcdic-cp-it IBM281/CR-LF 281/CR-LF CP281/CR-LF EBCDIC-JP-E IBM284/CR-LF 284/CR-LF CP284/CR-LF ebcdic-cp-es IBM285/CR-LF 285/CR-LF CP285/CR-LF ebcdic-cp-gb IBM290/CR-LF 290/CR-LF CP290/CR-LF EBCDIC-JP-kana IBM297/CR-LF 297/CR-LF CP297/CR-LF ebcdic-cp-fr IBM420/CR-LF 420/CR-LF CP420/CR-LF ebcdic-cp-ar1 IBM423/CR-LF 423/CR-LF CP423/CR-LF ebcdic-cp-gr IBM424/CR-LF 424/CR-LF CP424/CR-LF ebcdic-cp-he IBM437/CR-LF 437/CR-LF CP437/CR-LF IBM500/CR-LF 500/CR-LF 500V1 CP500/CR-LF ebcdic-cp-be ebcdic-cp-ch IBM850/CR-LF 850/CR-LF CP850/CR-LF IBM851/CR-LF 851/CR-LF CP851/CR-LF IBM852/CR-LF 852/CR-LF CP852/CR-LF pcl2 pclatin2 IBM855/CR-LF 855/CR-LF CP855/CR-LF IBM857/CR-LF 857/CR-LF CP857/CR-LF IBM860/CR-LF 860/CR-LF CP860/CR-LF IBM861/CR-LF 861/CR-LF CP861/CR-LF cp-is IBM862/CR-LF 862/CR-LF CP862/CR-LF IBM863/CR-LF 863/CR-LF CP863/CR-LF IBM864/CR-LF 864/CR-LF CP864/CR-LF IBM865/CR-LF 865/CR-LF CP865/CR-LF IBM868/CR-LF 868/CR-LF CP868/CR-LF cp-ar IBM869/CR-LF 869/CR-LF CP869/CR-LF cp-gr IBM870/CR-LF 870/CR-LF CP870/CR-LF ebcdic-cp-roece ebcdic-cp-yu IBM871/CR-LF 871/CR-LF CP871/CR-LF ebcdic-cp-is IBM875/CR-LF 875/CR-LF CP875/CR-LF EBCDIC-Greek IBM880/CR-LF 880/CR-LF CP880/CR-LF EBCDIC-Cyrillic IBM891/CR-LF 891/CR-LF CP891/CR-LF IBM903/CR-LF 903/CR-LF CP903/CR-LF IBM904/CR-LF 904/CR-LF CP904/CR-LF IBM905/CR-LF 905/CR-LF CP905/CR-LF ebcdic-cp-tr IBM918/CR-LF 918/CR-LF CP918/CR-LF ebcdic-cp-ar2 IBM1004/CR-LF 1004/CR-LF CP1004/CR-LF os2latin1 IBM1026/CR-LF 1026/CR-LF CP1026/CR-LF IBM1047/CR-LF 1047/CR-LF CP1047/CR-LF IBM-PC/CR-LF dos/CR-LF MSDOS/CR-LF pc/CR-LF Icon-QNX QNX IEC_P27-1 iso-ir-143 INIS iso-ir-49 INIS-8 iso-ir-50 INIS-cyrillic iso-ir-51 INVARIANT iso-ir-170 ISO-8859-1 819/CR-LF CP819/CR-LF IBM819/CR-LF iso-ir-100 ISO_8859-1 ISO_8859-1:1987 l1 lat1 latin1 Latin-1 ISO-8859-2 912/CR-LF CP912/CR-LF IBM912/CR-LF iso-ir-101 ISO_8859-2 ISO_8859-2:1987 l2 latin2 ISO-8859-3 iso-ir-109 ISO_8859-3 ISO_8859-3:1988 l3 latin3 ISO-8859-4 iso-ir-110 ISO_8859-4 ISO_8859-4:1988 l4 latin4 ISO-8859-5 cyrillic iso-ir-144 ISO_8859-5 ISO_8859-5:1988 ISO-8859-6 arabic ASMO-708 ECMA-114 iso-ir-127 ISO_8859-6 ISO_8859-6:1987 ISO-8859-7 ECMA-118 ELOT_928 greek greek8 iso-ir-126 ISO_8859-7 ISO_8859-7:1987 ISO-8859-8 hebrew iso-ir-138 ISO_8859-8 ISO_8859-8:1988 ISO-8859-9 iso-ir-148 ISO_8859-9 ISO_8859-9:1989 l5 latin5 ISO-8859-10 iso-ir-157 ISO_8859-10 ISO_8859-10:1993 l6 latin6 ISO-8859-13 iso-baltic iso-ir-179a ISO_8859-13 ISO_8859-13:1998 l7 latin7 ISO-8859-14 iso-celtic iso-ir-199 ISO_8859-14 ISO_8859-14:1998 l8 latin8 ISO-8859-15 iso-ir-203 ISO_8859-15 ISO_8859-15:1998 l9 latin9 ISO-10646-UCS-2 BMP rune u2 UCS-2 UNICODE-1-1 ISO-10646-UCS-4 10646 ISO_10646 u4 UCS UCS-4 ISO_646.basic ISO_646.basic:1983 ref ISO_646.irv irv iso-ir-2 ISO_646.irv:1983 ISO_2033-1983 e13b iso-ir-98 ISO_5427 iso-ir-37 ISO_5427-ext iso-ir-54 ISO_5427:1981 ISO_5428 iso-ir-55 ISO_5428:1980 ISO_6937-2-25 iso-ir-152 ISO_8859-supp iso-ir-154 latin1-2-5 ISO_10367-box iso-ir-155 IT ISO646-IT iso-ir-15 JIS_C6220-1969-jp iso-ir-13 JIS_C6220-1969 katakana x0201-7 JIS_C6220-1969-ro ISO646-JP iso-ir-14 jp JIS_C6229-1984-a jp-ocr-a JIS_C6229-1984-b ISO646-JP-OCR-B jp-ocr-b JIS_C6229-1984-b-add iso-ir-93 jp-ocr-b-add JIS_C6229-1984-hand iso-ir-94 jp-ocr-hand JIS_C6229-1984-hand-add iso-ir-95 jp-ocr-hand-add JIS_C6229-1984-kana iso-ir-96 JIS_X0201 X0201 JUS_I.B1.002 ISO646-YU iso-ir-141 js yu JUS_I.B1.003-mac iso-ir-147 macedonian JUS_I.B1.003-serb iso-ir-146 serbian KEYBCS2 Kamenicky KOI8-R KOI8-RU KOI8-U KOI-7 KOI-8 GOST_19768-74 KOI-8_CS2 KSC5636 ISO646-KR LaTeX ltex TeX latin-greek iso-ir-19 Latin-greek-1 iso-ir-27 mac-is macintosh/CR mac/CR macintosh_ce/CR macce/CR MSZ_7795.3 hu ISO646-HU iso-ir-86 Mule NATS-DANO iso-ir-9-1 NATS-DANO-ADD iso-ir-9-2 NATS-SEFI iso-ir-8-1 NATS-SEFI-ADD iso-ir-8-2 NC_NC00-10 cuba ISO646-CU iso-ir-151 NC_NC00-10:81 NeXTSTEP next NF_Z_62-010 fr ISO646-FR iso-ir-69 NF_Z_62-010_(1973) ISO646-FR1 iso-ir-25 NS_4551-1 ISO646-NO iso-ir-60 no NS_4551-2 ISO646-NO2 iso-ir-61 no2 PT ISO646-PT iso-ir-16 PT2 ISO646-PT2 iso-ir-84 RFC1345 1345 mnemonic sami iso-ir-158 lap latin-lap SEN_850200_B FI ISO646-FI ISO646-SE iso-ir-10 se SS636127 SEN_850200_C ISO646-SE2 iso-ir-11 se2 T.61-7bit iso-ir-102 Texinfo texi ti Texte txte UNICODE-1-1-UTF-7 TF-7 u7 UTF-7 UTF-8 FSS_UTF TF-8 u8 UTF-2 UTF-FSS UTF-16 TF-16 u6 Unicode