I'm trying to write a little script which will open a text file and give me an md5 hash for each line of text. For example I have a file with:
123
213
312
I want output to be:
ba1f2511fc30423bdbb183fe33f3dd0f
6f36dfd82a1b64f668d9957ad81199ff
390d29f732f024a4ebd58645781dfa5a
I'm trying to do this part in bash which will read each line:
#!/bin/bash
#read.file.line.by.line.sh
while read line
do
echo $line
done
later on I do:
$ more 123.txt | ./read.line.by.line.sh | md5sum | cut -d ' ' -f 1
but I'm missing something here, does not work :(
Maybe there is an easier way...
Almost there, try this:
while read -r line; do printf %s "$line" | md5sum | cut -f1 -d' '; done < 123.txt
Unless you also want to hash the newline character in every line you should use printf or echo -n instead of echo option.
In a script:
#! /bin/bash
cat "$#" | while read -r line; do
printf %s "$line" | md5sum | cut -f1 -d' '
done
The script can be called with multiple files as parameters.
You can just call md5sum directly in the script:
#!/bin/bash
#read.file.line.by.line.sh
while read line
do
echo $line | md5sum | awk '{print $1}'
done
That way the script spits out directly what you want: the md5 hash of each line.
this worked for me..
cat $file | while read line; do printf %s "$line" | tr -d '\r\n' | md5 >> hashes.csv; done
Related
Let's say I have the following csv file:
A,1
A,2
B,3
C,4
C,5
And for each unique value i in the first column of the file I want to write a script that does some processing using this value. I go about doing it this way:
CSVFILE=path/to/csv
VALUES=$(cut -d, -f1 $CSVFILE | sort | uniq)
for i in $VALUES;
do
cat >> file_${i}.sh <<-!
#!/bin/bash
#
# script that takes value I
#
echo "Processing" $i
!
done
However, this creates empty files for all values of i it is looping over, and prints the actual content of files to the console.
Is there a way to redirect the output to the files instead?
Simply
#!/bin/bash
FILE=/path/to/file
values=`cat $FILE | awk -F, '{print $1}' | sort | uniq | tr '\n' ' '`
for i in $values; do
echo "value of i is $i" >> file_$i.sh
done
Screenshot
Try using this:
#!/usr/bin/env bash
csv=/path/to/file
while IFS= read -r i; do
cat >> "file_$i.sh" <<-eof
#!/bin/bash
#
# Script that takes value $i ...
#
eof
done < <(cut -d, -f1 "$csv" | sort -u)
I need to read a json file and take value like 99XXXXXXXXXXXX0 and cccs and write in csv which having column BASE_No and Schedule.
Input file: classedFFDCD_5666_4888_45_2018_02112018012106.021.json
"bfgft":"99XXXXXXXXXXXX0","fp":"XXXXXX","cur_gt":225XXXXXXXX0,"cccs"
"bfgft":"21XXXXXXXXXXXX0","fp":"XXXXXX","cur_gt":225XXXXXXXX0,"nncs"
"bfgft":"56XXXXXXXXXXXX0","fp":"XXXXXX","cur_gt":225XXXXXXXX0,"fgbs"
"bfgft":"44XXXXXXXXXXXX0","fp":"XXXXXX","cur_gt":225XXXXXXXX0,"ddss"
"bfgft":"94XXXXXXXXXXXX0","fp":"XXXXXX","cur_gt":225XXXXXXXX0,"jjjs"
Expected output:
BASE_No,Schedule
99XXXXXXXXXXXX0,cccs
21XXXXXXXXXXXX0,nncs
56XXXXXXXXXXXX0,fgbs
44XXXXXXXXXXXX0,ddss
94XXXXXXXXXXXX0,jjjs
I am using below code for reading file name and date, but unable to read file for BASE_No,Schedule.
SAVEIFS=$IFS
IFS=$(echo -en "\n\b")
for line in `ls -lrt *.json`; do
date=$(echo $line |awk -F ' ' '{print $6" "$7}');
file=$(echo $line |awk -F ' ' '{print $9}');
echo ''$file','$(date "+%Y/%m/%d %H.%M.%S")'' >> $File_Tracker`
Assuming the structure of the json doesnt change for every line, the sample code checks through line by line to retrieve the particular value and concatenates using printf. The output is then stored as new output.txt file.
#!/bin/bash
input="/home/kj4458/winhome/Downloads/sample.json"
printf "Base,Schedule \n" > output.txt
while IFS= read -r var
do
printf "`echo "$var" | cut -d':' -f 2 | cut -d',' -f 1`,`echo "$var" | cut -d':' -f 4 | cut -d',' -f 2` \n" | sed 's/"//g' >> output.txt
done < "$input"
awk -F " \" " ' {print $4","$12 }' file
99XXXXXXXXXXXX0,cccs
21XXXXXXXXXXXX0,nncs
56XXXXXXXXXXXX0,fgbs
44XXXXXXXXXXXX0,ddss
94XXXXXXXXXXXX0,jjjs
I got that result!
I'm trying to compare two CSV files by reading the first line-by-line and grepping the second file for a match. Using Diff is not a viable solution. I seem to be having a problem with having the email address stored as a variable when I grep the second file.
#!/bin/bash
LANG=C
head -2 $1 | tail -1 | while read -r line; do
line=$( echo $line | sed 's/\n//g' )
echo $line
cat $2 | cut -d',' -f1 | grep -iF "$line"
done
Variable $line contains an email address that DOES exist in file $2, but I'm not getting any results.
What am I doing wrong?
File1
Email
email#verizon.net
email#gmail.com
email#yahoo.com
File2
email,,,,
email#verizon.net,,,,
email#gmail.com,,,,
email#yahoo.com,,,,
Given:
# csv_0.csv
email
me#me.com
you#me.com
fee#me.com
and
# csv_1.csv
email,foo,bar,baz,bim
bee#me.com,3,2,3,4
me#me.com,4,1,1,32
you#me.com,7,4,6,6
gee#me.com,1,2,2,6
me#me.com,5,7,2,34
you#me.com,22,3,2,33
I ran
$ pattern=$(head -2 csv_0.csv | tail -1 | sed s/,.*//g)
$ grep $pattern csv_1.csv
me#me.com,4,1,1,32
me#me.com,5,7,2,34
To do this for each line in csv_0.csv
#!/bin/bash
LANG=C
filename="$1"
{
read # don't read csv headers
while read line
do
pattern=$(echo $line | sed s/,.*//g)
grep $pattern $2
done
} <"$filename"
Then
$ ./csv_read.sh csv_2.csv csv_3.csv
me#me.com,4,1,1,32
me#me.com,5,7,2,34
you#me.com,7,4,6,6
you#me.com,22,3,2,33
I have a file paths.txt:
/my/path/Origin/.:your/path/Destiny/.
/my/path/Origin2/.:your/path/Destiny2/.
/...
/...
I need a Script CopyPaste.sh using file paths.txt to copy all files in OriginX to DestinyX
Something like that:
#!/bin/sh
while read line
do
var= $line | cut --d=":" -f1
car= $line | cut --d=":" -f2
cp -r var car
done < "paths.txt"
Use translate : tr command & apply cp command in the same go!
#!/bin/sh
while read line; do
cp `echo $line | tr ':' ' '`
done < "paths.txt"
You need to use command substitution to get command's output into a shell variable:
#!/bin/sh
while read line
do
var=`echo $line | cut --d=":" -f1`
car=`echo $line | cut --d=":" -f2`
cp -r "$var" "$car"
done < "paths.txt"
Though your script can be simplified using read -d:
while read -d ":" var car; do
cp -r "$var" "$car"
done < "paths.txt"
I have the following:
FILENAME=$1
cat $FILENAME | while read LINE
do
response="$LINE" | cut -c1-14
request="$LINE" | cut -c15-31
difference=($response - $request)/1000
echo "$difference"
done
When I run this script it returns blank lines. What am I doing wrong?
Might be simpler in awk:
awk '{print ($1 - $2)/1000}' "$1"
I'm assuming that the first 14 chars and the next 17 chars are the first two blank-separated fields.
You need to change it to:
response=`echo $LINE | cut -c1-14`
request=`echo $LINE | cut -c15-31`
difference=`expr $response - $request`
val=`expr $difference/1000`
You are basically doing everything wrong ;)
This should be better:
FILENAME="$1"
cat "$FILENAME" | while read LINE
do
response=$(echo "$LINE" | cut -c1-14) # or cut -c1-14 <<< "$line"
request=$(echo "$LINE" | cut -c15-31)
difference=$((($response - $request)/1000)
echo "$difference"
done