Advertisements I am new to shell scripting, I need help in converting python code to shell script. # Your JSON data data = { "group1": [ {"key1": "val1", "key2": "val2", "key3": "val3", "key4": "val4"}, {"key1": "bval1", "key2": "val2", "key3": "bval3"}, {"key1": "bval1", "key2": "xval2", "key3": "bval3", "key4": "bval4"}, ], "group2": [ {"key1": "zval1", "key2": "val2",… Read More Required shell script to modify json data

Advertisements I need a simple way to parse a json string received as a parameter. Is there a console tool for doing that? I’ll like to have something like this: data=parsestring(‘{"field1": "value1", "field2": "value2"}’) echo data.field1 echo data.field2 >Solution : Use jq if possible: $ echo ‘{"field1": "value1", "field2": "value2"}’ | jq { "field1": "value1",… Read More What is the simplest way to parse a json string in linux console?

Advertisements I’m doing a task, but I got an error: scr.sh: 3: Syntax error: word unexpected (expecting ")"). When I try to run my schell script on my local computer server, it works, but on the helios ssh server it return an error. Here’s my test code: #!/bin/bash arr=(kitten dog parrot) for i in ${arr[@]}… Read More scr.sh: 3: Syntax error: word unexpected (expecting ")")

Advertisements Good evening, I have to perform a loop through a directory that contains files with the following scheme: P1_1.fq.gz, P1_2.fq.gz P2_1.fq.gz, P2_2.fq.gz … P10_1.fq.gz, P10_2.fq.gz The purpose is take "one line" at a time. For example, in one iteration I must take the first two file and operate on them. Then, take the others… Read More Loop through directory with filenames with numbers in bash script

Advertisements I’m trying to replace a JSON value using SED regular expression. However, I’m experiencing the following error: sed: -e expression #1, char 60: Invalid preceding regular expression I have the following JSON object: { "profiles":{ "http":{ "applicationUrl":"http://localhost:5123" } } } I used regex101.com to create the following regular expression (PCRE2 – PHP >= 7.3):… Read More Invalid preceding regular expression with SED

Advertisements I run a CLI command that outputs various database values. One CLI command example is: show attributes attr=0x1006e mh=0x12003ea | awk ‘{print substr($0, 68)}’ | grep -v Value The output looks like this: Secure Domain So this technique definitely works. Without the awk command, and subsequent "grep -v Value" command the output looks like… Read More Is there a better way to parse the output of a command that produces a string with multiple columns than using awk '{print substr($0, 68)}'?

Advertisements Say there’s a script that makes use of a certain Bash feature, like arrays. But say that script is being run using sh on Ubuntu, which is Dash, a shell that does not support arrays. Let’s also assume I can’t control which shell is being used from the get go, i.e. I’m stuck with… Read More How to change the shell being used from Dash (or sh) to Bash during script execution?