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Top Forums UNIX for Dummies Questions & Answers Add word/value at the beginning of each line in a file Post 302738313 by jason6247 on Friday 30th of November 2012 10:40:07 PM
Old 11-30-2012
Add word/value at the beginning of each line in a file

how to add value/word at the beginning of each line in a file ?

i have file number.txt and the output is below

1000
1001
1002
1003
1004

i want to add 000 at the beginning of each line, desire output is below
0001000
0001001
0001002
0001003
0001004
and so on

please advise how to do it, i been searching forum but with no luck

---------- Post updated at 10:40 PM ---------- Previous update was at 10:33 PM ----------

Quote:
Originally Posted by jason6247
how to add value/word at the beginning of each line in a file ?

i have file number.txt and the output is below

1000
1001
1002
1003
1004

i want to add 000 at the beginning of each line, desire output is below
0001000
0001001
0001002
0001003
0001004
and so on

please advise how to do it, i been searching forum but with no luck
i have tried command seq -f "%010g" first number last number
but seq can only format number until 6 digit long, it wont print output 0000100001 0000100002 instead it become 0000.5.+.09 something
 

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OD(1)								   User Commands							     OD(1)

NAME
od - dump files in octal and other formats SYNOPSIS
od [OPTION]... [FILE]... od [-abcdfilosx]... [FILE] [[+]OFFSET[.][b]] od --traditional [OPTION]... [FILE] [[+]OFFSET[.][b] [+][LABEL][.][b]] DESCRIPTION
Write an unambiguous representation, octal bytes by default, of FILE to standard output. With more than one FILE argument, concatenate them in the listed order to form the input. With no FILE, or when FILE is -, read standard input. If first and second call formats both apply, the second format is assumed if the last operand begins with + or (if there are 2 operands) a digit. An OFFSET operand means -j OFFSET. LABEL is the pseudo-address at first byte printed, incremented when dump is progressing. For OFFSET and LABEL, a 0x or 0X prefix indicates hexadecimal; suffixes may be . for octal and b for multiply by 512. Mandatory arguments to long options are mandatory for short options too. -A, --address-radix=RADIX output format for file offsets; RADIX is one of [doxn], for Decimal, Octal, Hex or None --endian={big|little} swap input bytes according the specified order -j, --skip-bytes=BYTES skip BYTES input bytes first -N, --read-bytes=BYTES limit dump to BYTES input bytes -S BYTES, --strings[=BYTES] output strings of at least BYTES graphic chars; 3 is implied when BYTES is not specified -t, --format=TYPE select output format or formats -v, --output-duplicates do not use * to mark line suppression -w[BYTES], --width[=BYTES] output BYTES bytes per output line; 32 is implied when BYTES is not specified --traditional accept arguments in third form above --help display this help and exit --version output version information and exit Traditional format specifications may be intermixed; they accumulate: -a same as -t a, select named characters, ignoring high-order bit -b same as -t o1, select octal bytes -c same as -t c, select printable characters or backslash escapes -d same as -t u2, select unsigned decimal 2-byte units -f same as -t fF, select floats -i same as -t dI, select decimal ints -l same as -t dL, select decimal longs -o same as -t o2, select octal 2-byte units -s same as -t d2, select decimal 2-byte units -x same as -t x2, select hexadecimal 2-byte units TYPE is made up of one or more of these specifications: a named character, ignoring high-order bit c printable character or backslash escape d[SIZE] signed decimal, SIZE bytes per integer f[SIZE] floating point, SIZE bytes per float o[SIZE] octal, SIZE bytes per integer u[SIZE] unsigned decimal, SIZE bytes per integer x[SIZE] hexadecimal, SIZE bytes per integer SIZE is a number. For TYPE in [doux], SIZE may also be C for sizeof(char), S for sizeof(short), I for sizeof(int) or L for sizeof(long). If TYPE is f, SIZE may also be F for sizeof(float), D for sizeof(double) or L for sizeof(long double). Adding a z suffix to any type displays printable characters at the end of each output line. BYTES is hex with 0x or 0X prefix, and may have a multiplier suffix: b 512 KB 1000 K 1024 MB 1000*1000 M 1024*1024 and so on for G, T, P, E, Z, Y. EXAMPLES
od -A x -t x1z -v Display hexdump format output od -A o -t oS -w16 The default output format used by od AUTHOR
Written by Jim Meyering. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report od translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
Full documentation at: <http://www.gnu.org/software/coreutils/od> or available locally via: info '(coreutils) od invocation' GNU coreutils 8.28 January 2018 OD(1)
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