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Read input files and merge them in given order and write them to input one param or one file

 
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Old 02-10-2014
Read input files and merge them in given order and write them to input one param or one file
Dear Friends,
I am looking for a shell script to merge input files into one file .. here is my idea:

1st paramter would be outfile file (all input files content)
read all input files and merge them to input param 1
ex: if I pass 6 file names to the script then 1st file name as output file and merge rest of 5 files to 1st file:

cat file1 file2 file3 file4 file5 file6 > file1

i want above to be executed at end but trying to figure out how to read input params and call that cat command at end... the reason becuase input files are dynamic.. some times it could be 4 files, some times 5 and 8 are most input files... so script needs to read all input files and based on the count it needs to issue the cat command at end as per the no of input params..

any information would be greatly appriciated.
 
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git-mergetool

GIT-MERGETOOL(1)                                                    Git Manual                                                    GIT-MERGETOOL(1)

NAME

       git-mergetool - Run merge conflict resolution tools to resolve merge conflicts

SYNOPSIS

       git mergetool [--tool=<tool>] [-y | --[no-]prompt] [<file>...]

DESCRIPTION

       Use git mergetool to run one of several merge utilities to resolve merge conflicts. It is typically run after git merge.

       If one or more <file> parameters are given, the merge tool program will be run to resolve differences on each file (skipping those without
       conflicts). Specifying a directory will include all unresolved files in that path. If no <file> names are specified, git mergetool will run
       the merge tool program on every file with merge conflicts.

OPTIONS

       -t <tool>, --tool=<tool>
           Use the merge resolution program specified by <tool>. Valid values include emerge, gvimdiff, kdiff3, meld, vimdiff, and tortoisemerge.
           Run git mergetool --tool-help for the list of valid <tool> settings.

           If a merge resolution program is not specified, git mergetool will use the configuration variable merge.tool. If the configuration
           variable merge.tool is not set, git mergetool will pick a suitable default.

           You can explicitly provide a full path to the tool by setting the configuration variable mergetool.<tool>.path. For example, you can
           configure the absolute path to kdiff3 by setting mergetool.kdiff3.path. Otherwise, git mergetool assumes the tool is available in PATH.

           Instead of running one of the known merge tool programs, git mergetool can be customized to run an alternative program by specifying
           the command line to invoke in a configuration variable mergetool.<tool>.cmd.

           When git mergetool is invoked with this tool (either through the -t or --tool option or the merge.tool configuration variable) the
           configured command line will be invoked with $BASE set to the name of a temporary file containing the common base for the merge, if
           available; $LOCAL set to the name of a temporary file containing the contents of the file on the current branch; $REMOTE set to the
           name of a temporary file containing the contents of the file to be merged, and $MERGED set to the name of the file to which the merge
           tool should write the result of the merge resolution.

           If the custom merge tool correctly indicates the success of a merge resolution with its exit code, then the configuration variable
           mergetool.<tool>.trustExitCode can be set to true. Otherwise, git mergetool will prompt the user to indicate the success of the
           resolution after the custom tool has exited.

       --tool-help
           Print a list of merge tools that may be used with --tool.

       -y, --no-prompt
           Don't prompt before each invocation of the merge resolution program. This is the default if the merge resolution program is explicitly
           specified with the --tool option or with the merge.tool configuration variable.

       --prompt
           Prompt before each invocation of the merge resolution program to give the user a chance to skip the path.

       -O<orderfile>
           Process files in the order specified in the <orderfile>, which has one shell glob pattern per line. This overrides the diff.orderFile
           configuration variable (see git-config(1)). To cancel diff.orderFile, use -O/dev/null.

TEMPORARY FILES

       git mergetool creates *.orig backup files while resolving merges. These are safe to remove once a file has been merged and its git
       mergetool session has completed.

       Setting the mergetool.keepBackup configuration variable to false causes git mergetool to automatically remove the backup as files are
       successfully merged.

GIT

       Part of the git(1) suite

Git 2.17.1                                                          10/05/2018                                                    GIT-MERGETOOL(1)