Recent questions tagged shell

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shell - Cartesian product of two files (as sets of lines) in GNU/Linux

How can I use shell one-liners and common GNU tools to concatenate lines in two files as in Cartesian product? What is the ... b, c b, d b, e See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - How to use bash return code in conditional?

I have a small piece of code which checks IP address validity : function valid_ip() { local ip=$1 local stat=1 ... " is not a valid IP address See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - right text align - bash

I have one problem. My text should be aligned by right in specified width. I have managed to cut output to the ... $line" done < "output" thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - search multiple pattern in file and delete line if pattern matches

For ex, a file contain contents: 10.45.56.84 raj 10.49.31.81 mum 10.49.31.86 mum 10.81.51.92 guj 10 ... i want to do this in single command. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - How do i replace [] brackets using SED

I have a string that i am want to remove punctuation from. I started with sed 's/[[:punct:]]/ /g' But i ... am using KSH on Solaris, Redhat & HP See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - Python - Clearing the terminal screen more elegantly

I know you can clear the shell by executing clear using os.system, but this way seems quite messy to me ... the output in a commandline script? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - android dumpsys permission denial

I have an application where I create a process and call the dumpsys telephony.registry command to get information about ... running (ICS) API 15 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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871 views

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shell - ksh88 changing single quotes to double quotes inside heredocs?

I seem to be running into an issue that's specific to ksh88 that's changing single quotes to double quotes, ... (optional) question two: why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - Generate PDF Behind Authentication Wall

I'm trying to generate a PDF using WKHTMLTOPDF that requires me to first log in. There's some on this ... to eliminate a potential variable. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - How to hide passwords in Jenkins console output?

The Mask Passwords plugin only allows for preset passwords to be passed in to the build process, so it really ... some reason.. any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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shell - How to grep '---' in Linux? grep: unrecognized option '---'

I have a newly installed web application. In that there is a drop down where one option is ---. What I want to do ... to grep '---' in Linux ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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812 views

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shell - How to echo directories containing matching file with Bash?

I want to write a bash script which will use a list of all the directories containing specific files. I can ... contains a Java .class file. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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885 views

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shell - Why can't environment variables with dashes be accessed in bash 4.1.2?

On a CentOS 5 host (with bash 3.2.32), we use Ruby (1.8.7) to ENV['AWS_foo-bar_ACCESS_KEY'] = xxxxx Then, ... on bash 3.2 and not bash 4.1? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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shell - Python subprocess call returns "command not found", Terminal executes correctly

I am trying to run gphoto2 from python but, with no succes. It just returns command not found. gphoto is ... to have the same functionality..? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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981 views

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shell - Windows cmd pass output of one command as parameter to another

In linux it is possible t do this: git diff $(git status -s -b | sed -n '2p' | cut -d' ' -f2-) or ... -f2- | git diff // results in illegal seek See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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945 views

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shell - How to insert a line using sed before a pattern and after a line number?

How to insert a line into a file using sed before a pattern and after a line number? And how to use the ... a line number or another approach? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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877 views

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shell - sh read command eats backslashes in input?

Perhaps easiest to explain with an example: $ echo '&|' &| $ echo '&|' | while read in; do echo "$in ... read from being smart here. Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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883 views

1 answer

shell - How to do text DIFF using PHP?

What is the best way to do this for PHP? Is there any PHP function that can do this, considering the column ... shell utility can I call? thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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933 views

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shell - Passing arguments to a command in Bash script with spaces

I'm trying to pass 2 arguments to a command and each argument contains spaces, I've tried escaping the spaces ... : No such file or directory See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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963 views

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shell - Changing the bash script sent to sbatch in slurm during run a bad idea?

I wanted to run a python script main.py multiple times with different arguments through a sbatch_run.sh script as ... 10 or echo byebyeworld. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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986 views

1 answer

shell - setting the output field separator in awk

I'n trying this statement in my awk script (in a file containing separate code, so not inline), script name: ... advise how can i do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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934 views

1 answer

shell - How to write buffer content to stdout?

Is there any chance to write the content of the current vim buffer to stdout? I'd like to use vim to edit ... put the buffer content to stdout? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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829 views

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shell - How to do something to every file in a directory using bash?

I started with this: command * But it doesn't work when the directory is empty; the * wildcard becomes a literal ... harder than it ought it be? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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947 views

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shell - Invoking program when a bash function has the same name

I have the following function in my bash script: make() { cd Python-3.2 make } When make is called within ... the cleanest way to achieve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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941 views

1 answer

shell - Difference Between Python's IDLE and its command line

What are the key differences between Python's IDLE and its command line environment? IDLE looks nicer, of course ... and Python's interpreter? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

shell - get last line from grep search on multiple files

I'm curently having some problem with a grep command. I've found the way to only show the last line of ... last matching patern for every file. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.8k views

1 answer

shell - Docker compose won't find $PWD environment variable

Here's my docker-compose: version: '2' services: couchpotato: build: context: ./couchpotato dockerfile: ... .com/compose/environment-variables/ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

shell - Script to change password on linux servers over ssh

We have a number of Red Hat linux servers in our IT environment. I am being asked by my team members to write ... on all the servers in a list? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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