How can I copy a selected part of one file (File 1) and paste to the second file (File 2) after some selected lines via script/commands? The result should be stored in File 3.
I have tried with echo but echo deletes existing content, so i am not getting the desired result.
File 1
111111
222222
333333
444444
File 2
aaaaa
bbbbb
ccccc
ddddd
fffff
.
.
.
File3
111111
222222
333333
444444
aaaaa
bbbbb
ccccc
ddddd
eeeee
fffff
.
.
.
The well-known cat program derives its name from concatenate and is meant to be used for this:
cat file1 file2 > file3
It simply concatenates all files given by name as arguments and prints the result to stdout which you then can redirect into another file.
Try:
cat file1 > file3
Followed by:
cat file2 >> file3
The double > allows to append to a file, not deleting existing content.
Hope this helps!
Basically if you need to paste all file1 before file2:
file1 > file3 && file2>>file3
If file1 after file2:
file2 > file3 && file1>>file3
The>symbol means you overwrite everything, then >> means you add after existing.
If you want to paste something specific, with echo, then you should use:
echo "Something" > file3
echo " good" >> file3
Makes you file with contents Something good
Related
I have two files:
File1:
A
B
C
File2:
2
4
3
I would like to print each line in file1 the number of times found on the corresponding line of file2, and then append each line to a separate file.
Desired output:
A
A
B
B
B
B
C
C
C
Here is one of the approaches I have tried:
touch output.list
paste file1 file2 > test.dict
cat test.dict
A 2
B 4
C 3
while IFS="\t" read -r f1 f2
do
yes "$f1" | head -n "$f2" >> output.list
done < test.dict
For my output I get a bunch of lines that read:
head: : invalid number of lines
Any guidance would be greatly appreciated. Thanks!
Change IFS to an ANSI-C quoted string or remove IFS (since the default value already contains tab).
You can also use a process substitution and prevent the temporary file.
while IFS=$'\t' read -r f1 f2; do
yes "$f1" | head -n "$f2"
done < <(paste file1 file2) > output.list
You could loop through the output of paste and use a c-style for loop in replacement of yes and head.
#!/usr/bin/env bash
while read -r first second; do
for ((i=1;i<=second;i++)); do
printf '%s\n' "$first"
done
done < <(paste file1.txt file2.txt)
If you think that the output is correct add
| tee file3.txt
with a white space in between the command substitution to redirect the output to a stdout and the output file which is file3.txt
done < <(paste file1.txt file2.txt) | tee file3.txt
You can do this with an awk 1-liner
$ awk 'NR==FNR{a[++i]=$0;next}{for(j=0;j<$0;j++)print a[FNR]}' File1 File2
A
A
B
B
B
B
C
C
C
I have 2 files test and test1 and I would like to do a diff between them without the output having extra characters 2a3, 4a6, 6a9 as shown below.
mangoes
apples
banana
peach
mango
strawberry
test1:
mangoes
apples
blueberries
banana
peach
blackberries
mango
strawberry
star fruit
when I diff both the files
$ diff test test1
2a3
> blueberries
4a6
> blackberries
6a9
> star fruit
How do I get the output as
$ diff test test1
blueberries
blackberries
star fruit
A solution using comm:
comm -13 <(sort test) <(sort test1)
Explanation
comm - compare two sorted files line by line
With no options, produce three-column output. Column one contains
lines unique to FILE1, column two contains lines unique to FILE2, and column three contains lines common to both files.
-1 suppress column 1 (lines unique to FILE1)
-2 suppress column 2 (lines unique to FILE2)
-3 suppress column 3 (lines that appear in both files
As we only need the lines unique to the second file test1, -13 is used to suppress the unwanted columns.
Process Substitution is used to get the sorted files.
You can use grep to filter out lines that are not different text:
$ diff file1 file2 | grep '^[<>]'
> blueberries
> blackberries
> star fruit
If you want to remove the direction indicators that indicate which file differs, use sed:
$ diff file1 file2 | sed -n 's/^[<>] //p'
blueberries
blackberries
star fruit
(But it may be confusing to not see which file differs...)
You can use awk
awk 'NR==FNR{a[$0];next} !($0 in a)' test test1
NR==FNR means currently first file on the command line (i.e. test) is being processed,
a[$0] keeps each record in array named a,
next means read next line without doing anything else,
!($0 in a) means if current line does not exist in a, print it.
I basically am working with two files (file1 and file2). The goal is to write a script that pulls rows from file1, if columns 1,2,3 match between files1 and files2. Here's the code I have been playing with:
awk -F'|' 'NR==FNR{c[$1$2$3]++;next};c[$1$2$3] > 0' file1 file2 > filtered.txt
ile1 and file2 both look like this (but has many more columns):
name1 0 c
name1 1 c
name1 2 x
name2 3 x
name2 4 c
name2 5 c
The awk code I provided isn't producing any output. Any help would be appreciated!
your delimiter isn't pipe, try this
$ awk 'NR==FNR {c[$1,$2,$3]++; next} c[$1,$2,$3]' file1 file2 > filtered.txt
or
$ awk 'NR==FNR {c[$0]++; next} c[$0]' file1 file2 > filtered.txt
however, if you're matching the whole line perhaps easier with grep
$ grep -xFf file1 file2 > filtered.txt
awk '{key=$1 FS $2 FS $3} NR==FNR{file2[key];next} key in file2' file2 file1
hi there i want to creat a bash script that does the following:
i have 2 texts files one is adf.ly links and the other Recipie names
i want to creat a batch scrript that takes each line from each text file and do the following
<li>**Recipie name line 1 of txt file**</li>
<li>**Recipie name line 2 of txt file**</li>
ect ect and save all the results to another text file called LINKS.txt
someone please help or point me in direction of linux bash script
this awk one-liner will do the job:
awk 'BEGIN{l="<li>%s</li>\n"}NR==FNR{a[NR]=$0;next}{printf l, a[FNR],$0}' file1 file2
more clear version (same script):
awk 'BEGIN{l="<li>%s</li>\n"}
NR==FNR{a[NR]=$0;next}
{printf l, a[FNR],$0}' file1 file2
example:
kent$ seq -f"%g from file1" 7 >file1
kent$ seq -f"%g from file2" 7 >file2
kent$ head file1 file2
==> file1 <==
1 from file1
2 from file1
3 from file1
4 from file1
5 from file1
6 from file1
7 from file1
==> file2 <==
1 from file2
2 from file2
3 from file2
4 from file2
5 from file2
6 from file2
7 from file2
kent$ awk 'BEGIN{l="<li>%s</li>\n"};NR==FNR{a[NR]=$0;next}{printf l, a[FNR],$0}' file1 file2
<li>1 from file2</li>
<li>2 from file2</li>
<li>3 from file2</li>
<li>4 from file2</li>
<li>5 from file2</li>
<li>6 from file2</li>
<li>7 from file2</li>
EDIT for the comment of OP:
if you have only one file: (the foo here is just dummy text)
awk 'BEGIN{l="<li>foo</li>\n"}{printf l,$0}' file1
output from same file1 example:
<li>foo</li>
<li>foo</li>
<li>foo</li>
<li>foo</li>
<li>foo</li>
<li>foo</li>
<li>foo</li>
if you want to save the output to a file:
awk 'BEGIN{l="<li>foo</li>\n"}{printf l,$0}' file1 > newfile
Try doing this :
$ cat file1
aaaa
bbb
ccc
$ cat file2
111
222
333
$ paste file1 file2 | while read a b; do
printf '<li>%s</li>\n' "$a" "$b"
done | tee newfile
Output
<li>111</li>
<li>222</li>
<li>333</li>
how can i compare 2 files in LINUX containing for example:
file1
1
2
3
4
5
file2
1
2
3
and to get the result
file3
4
5
How about using comm: Select or reject lines common to two files?
comm -3 file1 file2 > file3
would work for your simple example.
If you want to list all the lines that are in file1, but not in file2, you can do this:
diff file1 file2 | grep "^<" | sed "s/^< //" > file3