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I've a txt file like this:
cat fruits.txt
apple
banana
mango
I need put them to bash array:
fruit[0]='apple'
fruit[1]='banana'
ftuit[2]='mango'
You can do:
fruit=( $(<fruits.txt) )
set | grep fruit
fruit=([0]="apple" [1]="banana" [2]="mango")
In bash 4 and later:
mapfile fruit < fruits.txt
To ignore the trailing newline from each line
mapfile -t fruit < fruits.txt
The command readarray is a synonym for mapfile.
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I have a string in shell script:
string1="0101122100635014,TEST123 22 SEP 06 PQR BC,14,25,0.05,,0915-1530|1815-1915:17,2022-09-30,1665066600,ABC:TEST123629500AB,10,11,90014,TEST123,26009,29500.0,BC"
I want to extract ABC:TEST123629500AB in shell scripting.
echo $string1 | magical command
output: ABC:TEST123629500AB
echo "$string1" | cut -d',' -f10
cut will give you part of string.
-d define the separator.
-f Specifies the column you want based on the separator
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I am using
sed -s n v
Nothing works for me
The -i flag is only in GNU Sed.
cat file | tr ']' '[' > temp
mv temp file
The above should work for you.
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I have an output from a program that I would like to process and If I pipe it to a file I get:
file/path#backup2018
file2/path/more/path/path#backup2019
file3/path#backup2017
And I want to process it so it looks like this:
file/path file.path
file2/path/more/path/path file.path.more.path.path
file3/path file.path
I have figured out how to make it with separate commands but would like a one liner.
$ awk -F# '{s=$1; gsub("/", ".", s); print $1, s}' file | column -t
file/path file.path
file2/path/more/path/path file2.path.more.path.path
file3/path file3.path
using sed
sed 's/\([^#]*\)#.*/\1 \1/g' file|column -t
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Is there a way to change multiple (up to ten) patterns in a single fasta file using sed?
For instance I want to change X for Y:
sed "s/X/Y/g" < file1.fasta > output.fasta
how to add sed "s/\s/_/g" and 8 more commands to the same one-liner?
You can separate the commands by semicolons
sed 's/a/b/;s/c/d/'
(you can also use newlines instead of semicolons)
or you can use multiple -es:
sed -e 's/a/b/' -e 's/c/d/'
see this example: (test with gnu sed):
kent$ echo 'abcd'|sed 's/a/1/;s/b/2/;s/c/3/;s/d/4/'
1234
kent$ echo 'abcd'|sed 'y/abcd/1234/'
1234
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I want to insert the content between the matching pattern in shell please help on this
For example :
file called input.txt :
var a = [ ]
file called output.txt :
1152
1185
1185
I want to insert the values from output.txt file to the file input.txt.
it should be like var a = [1152 1185 1185]
sed "s/\[/[ $(xargs < output.txt)/" input.txt
xargs < filename dumps all file lines in just one, i.e., replaces EOL characters for SPACE characters.
$(xargs < filename) expands to the contents of the filename in just one line. Hence the use of double quotes, not single ones.