(coreutils.info)paste invocation

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8.2 `paste': Merge lines of files
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`paste' writes to standard output lines consisting of sequentially
corresponding lines of each given file, separated by a TAB character.
Standard input is used for a file name of `-' or if no input files are
given.

   For example:

     $ cat num2
     1
     2
     $ cat let3
     a
     b
     c
     $ paste num2 let3
     1       a
     2       b
             c

   Synopsis:

     paste [OPTION]... [FILE]...

   The program accepts the following options.  Also see Note: Common
options.

`-s'
`--serial'
     Paste the lines of one file at a time rather than one line from
     each file.  Using the above example data:

          $ paste -s num2 let3
          1       2
          a       b       c

`-d DELIM-LIST'
`--delimiters=DELIM-LIST'
     Consecutively use the characters in DELIM-LIST instead of TAB to
     separate merged lines.  When DELIM-LIST is exhausted, start again
     at its beginning.  Using the above example data:

          $ paste -d '%_' num2 let3 num2
          1%a_1
          2%b_2
          %c_


   An exit status of zero indicates success, and a nonzero value
indicates failure.