Provide facility to escape double quotes

[ORESoftware]

Here are a couple lines of a JSON in a file:

{"user":"alex","num":"509","time":"Tue Jun  4 22:26:08 PDT 2019","pwd":"/Users/alex/codes/ores/prompt-command","pid":8074,"exit_code":127,"cmd":"xxxx"}
{"user":"alex","num":"510","time":"Tue Jun  4 22:26:47 PDT 2019","pwd":"/Users/alex/codes/ores/prompt-command","pid":8114,"exit_code":0,"cmd":"sed '0,1d' "$HOME/my_bash_history""}
{"user":"alex","num":"511","time":"Tue Jun  4 22:26:55 PDT 2019","pwd":"/Users/alex/codes/ores/prompt-command","pid":8132,"exit_code":0,"cmd":"sed '0,1d' "$HOME/my_bash_history" | wc -l"}

not quote valid JSON because if you look at the bottom 2 lines, we have this pair:

"cmd":"sed '0,1d' "$HOME/my_bash_history" | wc -l"

so what we need is:

"cmd":"sed '0,1d' \"$HOME/my_bash_history\" | wc -l"

my question/request: does/can JQ provide a facility to escape/sanitize strings:

echo $cmd | jq --sanitize

[ORESoftware]

for example, this is just unacceptably complicated:
https://unix.stackexchange.com/a/339892/287203

see my comment to the answer.

[pkoppstein]

I believe the -R option does what you want. The following script:

#!/bin/bash

TEXT=$(cat<<"EOF"
sed '0,1d' "$HOME/my_bash_history" | wc -l
EOF
 )

echo "TEXT=$TEXT"

echo "$TEXT" | jq -R .

produces:

TEXT=sed '0,1d' "$HOME/my_bash_history" | wc -l
"sed '0,1d' \"$HOME/my_bash_history\" | wc -l"

[ORESoftware]

thanks let me try it, I wonder if the . is necessary? probably not

[nicowilliams]

So, I don't know how to implement a parser for "almost-right" JSON texts like the one you showed us, @ORESoftware...