I have three files, basically:
file 1 - one line header
file 2 - big data (approx 80GB)
file 3 - a one line trailer
the existing process cats these together i.e cat file 1 file 2 file 3
however... I was thinking, surely it could be more efficient to insert the header (file 1) on the... (2 Replies)
Hi guz I want to merge multiple rows into a multiple columns based on the first column.
The file has symbol //
I want to break the symbool // and I nedd exactlynew column at that point
the output will be like this
please guyz help in this isssue!!!!!
merging rows into columns ... (4 Replies)
Hi all - I have a file like below:
A: A1,A2,A3,A4
B: 1,2,3,4
C: z,y,x,w
....
This format repeats
The output should come in a single line merging the first line field with the other two rows:
A1_1 A1_z A2_2 A2_y A3_3 A3_x A4_4 A4_w
Could anyone help with some directions
... (4 Replies)
Hi,
I have tab limited file 1
and tab limited file 2
The output should contain common first column vales and corresponding 2nd column values; AND also unique first column value with corresponding 2nd column value of the file that contains it and 0 for the second file.
the output should... (10 Replies)
Hi all,
I'm looking for a way to merge multiple columns (from one file) into a single column in an output file.
The file I have looks somewhat like this:
@HWI-ST212 1:N:0 AGTCCTACCGGGAGT + @@@DDDDDHHHHHII
@HWI-ST212 1:N:0 CGTTTAAAAATTTCT + @;@B;DDDDH?:F;F... (4 Replies)
Hi all, I've searched the web for a long time trying to figure out how to merge columns from multiple files.
I know paste will append columns like so:
paste file1 file2 file3 file4 file5 ...
But this becomes inconvenient when you want to append a large number of files into a single file.
... (2 Replies)
Hello, I have two files that have this format:
file 1
86.82 0.00 86.82 43.61
86.84 0.00 86.84 43.61
86.86 0.00 86.86 43.61
86.88 0.00 86.88 43.61
file 2
86.82 0.22
86.84 0.22
86.86 0.22
86.88 0.22
I would like to merge these two files such that the final file looks like... (5 Replies)
Hi,
I have a file with 16 columns and out of these 16 columns 14 are key columns, 15 th is order column and 16th column is having information. I need to concate the 16th column based on value of 1-14th column as key in order of 15th column. Here are the example file
Input File (multiple... (3 Replies)
Hello and Good day
I have a lot of files with same number of rows and columns.$2 and $3 are the same in all files .
I need to merge $2,$3,$6 from first file and $6 from another files.
File1:
$1 $2 $3 $4 $5 $6... (8 Replies)
Join and merge multiple files with duplicate key and fill void columns
Hi guys,
I have many files that I want to merge:
file1.csv:
1|abc
1|def
2|ghi
2|jkl
3|mno
3|pqr
file2.csv: (5 Replies)
Discussion started by: yjacknewton
5 Replies
LEARN ABOUT SUSE
git-merge-base
GIT-MERGE-BASE(1) Git Manual GIT-MERGE-BASE(1)NAME
git-merge-base - Find as good common ancestors as possible for a merge
SYNOPSIS
git merge-base [-a|--all] <commit> <commit>...
DESCRIPTION
git merge-base finds best common ancestor(s) between two commits to use in a three-way merge. One common ancestor is better than another
common ancestor if the latter is an ancestor of the former. A common ancestor that does not have any better common ancestor is a best
common ancestor, i.e. a merge base. Note that there can be more than one merge base for a pair of commits.
Among the two commits to compute the merge base from, one is specified by the first commit argument on the command line; the other commit
is a (possibly hypothetical) commit that is a merge across all the remaining commits on the command line. As the most common special case,
specifying only two commits on the command line means computing the merge base between the given two commits.
As a consequence, the merge base is not necessarily contained in each of the commit arguments if more than two commits are specified. This
is different from git-show-branch(1) when used with the --merge-base option.
OPTIONS -a, --all
Output all merge bases for the commits, instead of just one.
DISCUSSION
Given two commits A and B, git merge-base A B will output a commit which is reachable from both A and B through the parent relationship.
For example, with this topology:
o---o---o---B
/
---o---1---o---o---o---A
the merge base between A and B is 1.
Given three commits A, B and C, git merge-base A B C will compute the merge base between A and a hypothetical commit M, which is a merge
between B and C. For example, with this topology:
o---o---o---o---C
/
/ o---o---o---B
/ /
---2---1---o---o---o---A
the result of git merge-base A B C is 1. This is because the equivalent topology with a merge commit M between B and C is:
o---o---o---o---o
/
/ o---o---o---o---M
/ /
---2---1---o---o---o---A
and the result of git merge-base A M is 1. Commit 2 is also a common ancestor between A and M, but 1 is a better common ancestor, because 2
is an ancestor of 1. Hence, 2 is not a merge base.
When the history involves criss-cross merges, there can be more than one best common ancestor for two commits. For example, with this
topology:
---1---o---A
/
X
/
---2---o---o---B
both 1 and 2 are merge-bases of A and B. Neither one is better than the other (both are best merge bases). When the --all option is not
given, it is unspecified which best one is output.
AUTHOR
Written by Linus Torvalds <torvalds@osdl.org[1]>
DOCUMENTATION
Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org[2]>.
GIT
Part of the git(1) suite
NOTES
1. torvalds@osdl.org
mailto:torvalds@osdl.org
2. git@vger.kernel.org
mailto:git@vger.kernel.org
Git 1.7.1 07/05/2010 GIT-MERGE-BASE(1)