Recent questions tagged shell

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shell - Get the name of the caller script in bash script

Let's assume I have 3 shell scripts: script_1.sh #!/bin/bash ./script_3.sh script_2.sh #!/bin/bash ./ ... it is not affected by the modification See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - Is there a way to avoid positional arguments in bash?

I have to write a function in bash. The function will take about 7 arguments. I know that I can call ... Any example would be much appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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shell - Assign a makefile variable value to a bash command result?

I'm trying to assign the output of this command ( that is in my makefile ) to the makefile HEADER var like in ... in my makefile. Any ideas ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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shell - Calling 'git pull' from a git post-update hook

I have a central git repo set up using gitolite. I want to set up a hook such that whenever a user pushes ... idea why this might be happening? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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876 views

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shell - How to write a bash script to set global environment variable?

Recently I wrote a script which sets an environment variable, take a look: #!/bin/bash echo "Pass a path ... which can be seen everywhere? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.5k views

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shell - -bash: __git_ps1: command not found

I tried to install Ruby 2.0. My command line urped and now looks like the following: -bash: __git_ps1: ... just confused myself. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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803 views

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shell - How to properly nest Bash backticks

Either I missed some backlash or backlashing does not seem to work with too much programmer-quote-looping. $ echo ... -hello4-hello5-hello6-... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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828 views

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shell - How to break out of a loop in Bash?

I want to write a Bash script to process text, which might require a while loop. For example, a while loop ... equivalent of the above C code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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845 views

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shell - Write byte at address (hexedit/modify binary from the command line)

Is there any straightforward way to modify a binary from the commandline? Let's say I know that my binary ... Any idea? Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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782 views

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shell - Force "git status" to output color on the terminal (inside a script)

EDIT: I would like to make a recommendation that parsing colors is a generally ill-conceived idea. Part of why ... 't finished building it). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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868 views

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shell - How do you grep a file and get the next 5 lines

How do I grep a file for 19:55 and get the Line 1,2,3,4,5? 2013/10/08 19:55:27.471 Line 1 Line 2 Line ... Line 1 Line 2 Line 3 Line 4 Line 5 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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798 views

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shell - "No such file or directory" but it exists

I simply want to run an executable from the command line, ./arm-mingw32ce-g++, but then I get the error ... when it's there. Any thoughts? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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843 views

1 answer

shell - how do I use the grep --include option for multiple file types?

When I want to grep all the html files in some directory, I do the following grep --include="*.html" pattern -R / ... my grep version is 2.5.1. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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shell - Batch convert latin-1 files to utf-8 using iconv

I'm having this one PHP project on my OSX which is in latin1 -encoding. Now I need to convert files to ... anyone come up with neat solution? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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shell - Boolean operators ( &&, -a, ||, -o ) in Bash

What is the difference between the &&, ||, -a, and -o Unix operators? What are the restrictions on the usage of both ... "yes" -a $2 -lt 3 ] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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shell - Subtract two variables in Bash

I have the script below to subtract the counts of files between two directories but the COUNT= expression does ... not found' error echo $COUNT See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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shell - Android ADB commands to get the device properties

I am trying to get the device properties from ADB commands. I can how ever get those values by running sample ... .build.version.release 4.2.2 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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956 views

1 answer

shell - How to hide command output in Bash

I want to make my Bash scripts more elegant for the end user. How do I hide the output when Bash is ... set of commands are being executed. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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889 views

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shell - How to find whether or not a variable is empty in Bash?

How can I check if a variable is empty in Bash? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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965 views

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shell - How to assign the output of a command to a Makefile variable

I need to execute some make rules conditionally, only if the Python installed is greater than a certain version ... workaround to achieve this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

shell - Generating a SHA-256 hash from the Linux command line

I know the string "foobar" generates the SHA-256 hash c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2 using http ... I missing? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

shell - How to check if running as root in a bash script

I'm writing a script that requires root level permissions, and I want to make it so that if the script ... looking for some syntactic sugar. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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950 views

1 answer

shell - How to set up tmux so that it starts up with specified windows opened?

How to set up tmux so that it starts up with specified windows opened? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - Bash error: Integer expression expected

In the sections below, you'll see the shell script I am trying to run on a UNIX machine, along with a ... /staff/t /packages/turnin $ _ See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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988 views

1 answer

shell - How can I start Powershell script as noprofile in Visual Studio Code

How can I start Powershell script as noprofile in Visual Studio Code, I can run the Powershell Ise with ... session in Visual Studio Code. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

shell - json format each object in a line

cat 2.txt | ./jq '{(.id): .custom}' above command outputs { "1": { "results": "Success" } } { "2": ... } } will it be possible in shell script? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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863 views

1 answer

shell - Replace a field with values specified in another file

I have a file that contains the map between the words. I have to refer to that file and replace those words with ... ). Can anyone help me out? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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840 views

1 answer

shell - Is there an elegant way to store and evaluate return values in bash scripts?

I have a rather complex series of commands in bash that ends up returning a meaningful exit code. Various places ... then branch on it later? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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