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bash
scripts
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URL:
https://askubuntu.com/q/1138332
Title:
Only one line in script output
ID:
/2019/04/26/Only-one-line-in-script-output
Created:
April 26, 2019
Edited: April 27, 2019
Upload:
September 15, 2024
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You are writing to a file in a loop with this command:
echo "$serial"|sha256sum > Token.csv
However each time you loop you are erasing the file and writing a new entry. What you want to do is append (add to) the file each time you loop with this command:
echo "$serial"|sha256sum >> Token.csv
A single > tells bash to erase the file Token.csv and write the contents. A double >> tells bash to add to the end of the file.
The bash script would now look like this:
#!/bin/bash
epoch=$(date -d "`date`" +"%s")
StringCsv="/home/Desktop/TokenGenScript/SerialNos.csv"
StringToken=b5242a2d7973c1aca3723c834ba0d239
> Token.csv # Empty file from last run
while IFS=$'\n' read -r line || [ -n "$line" ]
do
j=$line
serial=${j}:${epoch}:${StringToken}
echo "$serial"|sha256sum >> Token.csv # Append new record to end
done < "$StringCsv"
There are two ways to create a new empty file > Token.csv as used above and touch Token.csv. However only > Token.csv will empty an existing file. See: