Compare two files, then overwrite first file with only that in both files
I want to compare two files, and search for items that are in both. Then override the first file with that containing only elements which were in both files. I imagine something with diff, but not sure.
Hi guys,
I checked the knowledge base before posting this question.
is there any way by which you can ALWAYS ALLOW file overwrite in AWK?. i.e. an option similar to noclobber in Korn shell.
I don't to check for files existence and remove them. (1 Reply)
I have searched about 30 threads, a load of Google pages and cannot find what I am looking for. I have some of the parts but not the whole. I cannot seem to get the puzzle fit together.
I have three folders, two of which contain different versions of multiple files, dist/file1.php dist/file2.php... (4 Replies)
Hi, all:
I've got two folders, say, "folder1" and "folder2".
Under each, there are thousands of files.
It's quite obvious that there are some files missing in each. I just would like to find them. I believe this can be done by "diff" command.
However, if I change the above question a... (1 Reply)
I have two files '
1st one
ALIC-000352-B
ALIC-000916-O
DDS-STNGD
FDH-PPO1-001
PFG-30601-001
2nd one
'ALIC-000352-B'
'ALIC-000916-O'
'DDS-STNGD'
'FDH-PPO1-001' (4 Replies)
Dear users,
I've been looking for a way to overwrite files only if both have the same size, how could I do this? any help is very appreciated.
Best regards,
Gery (5 Replies)
I have this code
awk 'NR==FNR{a=$1;next} a' file1 file2
which does what I need it to do, but for only two files. I want to make it so that I can have multiple files (for example 30) and the code will return only the items that are in every single one of those files and ignore the ones... (7 Replies)
Hi,
Please help How to compare two files-
Any mismatches 2nd and 3rd column's values corresponding to 1st column.
file1
15294024|Not Allowed|null
15291398|Not Allowed|null
15303292|Dropship (standard)|N
15303291|Dropship (standard)|N
15275561|Store Only|Y
15275560|Store Only|Y... (2 Replies)
Hi
Please help me to compare two files and output into a new file
file1.txt
15114933 |4001
15291649 |933502
15764675 |4316
15764678 |4316
15761974 |282501
15673104 |933505
15673577 |933505
15673098 |933505
15673096 |933505
15673092 |933505
15760705 ... (13 Replies)
// Redhat
I have this code working, but need to add one more qualification so that I don't overwrite the files.
#!/bin/sh
cd /P2/log/cerner_prod/millennium/archive/
for f in *
do || continue #If this isn't a regular file, skip it.
&& continue #If a backup already... (2 Replies)
Discussion started by: Daniel Gate
2 Replies
LEARN ABOUT POSIX
zdiff
ZDIFF(1) General Commands Manual ZDIFF(1)NAME
zcmp, zdiff - compare compressed files
SYNOPSIS
zcmp [ cmp_options ] file1 [ file2 ]
zdiff [ diff_options ] file1 [ file2 ]
DESCRIPTION
Zcmp and zdiff are used to invoke the cmp or the diff program on files compressed via gzip. All options specified are passed directly to
cmp or diff. If only file1 is specified, it is compared to the uncompressed contents of file1.gz. If two files are specified, their con-
tents (uncompressed if necessary) are fed to cmp or diff. The input files are not modified. The exit status from cmp or diff is pre-
served.
SEE ALSO cmp(1), diff(1), zmore(1), zgrep(1), znew(1), zforce(1), gzip(1), gzexe(1)BUGS
Messages from the cmp or diff programs may refer to file names such as "-" instead of to the file names specified.
ZDIFF(1)