Recent questions tagged bash

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Is there any way how I can run two Db2 commands from a command line? (They will be called from a PHP exec ... php user gives me correct output. See Question&Answers more detail:os...

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

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bash - How to find the largest file in a directory and its subdirectories?

We're just starting a UNIX class and are learning a variety of Bash commands. Our assignment involves performing ... still getting used to 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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bash - How to pass arguments to Shell Script through docker run

I am new to the docker world. I have to invoke a shell script that takes command line arguments ... arguments while running the container See Question&Answers more detail:os...

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

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bash - 'find -exec' a shell function in Linux

Is there a way to get find to execute a function I define in the shell? For example: dosomething () { echo ... find's -exec to see dosomething? See Question&Answers more detail:os...

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

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bash - How do I make this file.sh executable via double click?

First off I'm using Mac. Next, I need to execute this "file.sh" we will call it. Everytime I need to execute ... , I'm new to Terminal. Thanks. See Question&Answers more detail:os...

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

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bash - How to Batch Rename Files in a macOS Terminal?

I have a folder with a series of files named: prefix_1234_567.png prefix_abcd_efg.png I'd like to batch remove ... files in OS X Terminal See Question&Answers more detail:os...

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

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bash - find: missing argument to -exec

I was helped out today with a command, but it doesn't seem to be working. This is the command: find /home/ ... . I appreciate any help on 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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bash - Select random lines from a file

In a Bash script, I want to pick out N random lines from input file and output to another file. How can this be done? See Question&Answers more detail:os...

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

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bash - How to split a string in shell and get the last field

Suppose I have the string 1:2:3:4:5 and I want to get its last field (5 in this case). How do I do ... how to specify the last field with -f. See Question&Answers more detail:os...

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

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bash variable interpolation separate variables by a hyphen or underscore

This is a simple script just to see if the file has been downloaded. On this script the find command ... CSV + echo successful successful ~ See Question&Answers more detail:os...

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

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bash - Reading key/value parameters from a file into a shell script

I've got my script working almost. The goal of this is to take defined values from a file and ... ,UPDATE TARGET_USER TESTUSER TARGET_TABLE ABC See Question&Answers more detail:os...

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

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bash - Percent sign % not working in crontab

I have a cron issue with curl: curl -w "%{time_total} " -o /dev/null -s http://myurl.com >> ~/log works ... http://myurl.com >> ~/log works. See Question&Answers more detail:os...

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

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bash - Why does getopts only work the first time?

Why does this option only work the first time it's used, then ignored every other time? It's like it's being ... o true $ testopts -o o false See Question&Answers more detail:os...

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

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bash - grep for expression containing variable

I want to add this command grep -co '5' $INFILE in a bash script. The problem is that instead of 5 i ... meaning of the value of a variable? See Question&Answers more detail:os...

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

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bash - I am getting error "array.sh: 3: array.sh: Syntax error: "(" unexpected"

I have written the following code: #!/bin/bash #Simple array array=(1 2 3 4 5) echo ${array[*]} And I ... . My Ubuntu version is: Ubuntu 14.04 See Question&Answers more detail:os...

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

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551 views

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bash - Creating a string variable name from the value of another string

In my bash script I have two variables CONFIG_OPTION and CONFIG_VALUE which contain string VENDOR_NAME and Default_Vendor ... not found' Thanks. See Question&Answers more detail:os...

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

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bash - Is it possible to get commit logs/messages of a remote git repo without git clone

Is it possible to get commit logs/messages of a remote git repo without git clone? The git repo I am working ... Anyone know how to do that? See Question&Answers more detail:os...

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

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bash - Jenkins pipeline sh fail with "cannot run program nohup" on windows

I have windows 10 and I want to execute the sh command in the Jenkinsfile from Jenkins pipeline using bash for ... using windows 10's 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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727 views

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bash - Convert seconds to hours, minutes, seconds

How can I convert seconds to hours, minutes and seconds? show_time() { ????? } show_time 36 # 00:00:36 ... :26 show_time 91925 # 25:32:05 See Question&Answers more detail:os...

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

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bash - Shell variables set inside while loop not visible outside of it

I am trying to find the pathname with the most characters in it. There might be better ways to do this. ... not make these variables global? See Question&Answers more detail:os...

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

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637 views

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bash - Detect if PATH has a specific directory entry in it

With /bin/bash, how would I detect if a user has a specific directory in their $PATH variable? For example if ... Your path is correctly set" fi See Question&Answers more detail:os...

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

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631 views

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bash - Explanation of colon operator in ": ${foo=value}"

I understand the colon operator in bash that acts like a null, and I know it's used in parameter ... a more enlightening explanation though. See Question&Answers more detail:os...

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

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673 views

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bash - Waiting for background processes to finish before exiting script

How do I make sure that all my background processes have finished execution before I exit my script (TCL/Bash). ... specific way to do 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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926 views

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bash - Modify a key-value in a json using jq in-place

I have a json in which I want to modify a particular value but the terminal always displays the json with the ... didn't work. Any suggestions? See Question&Answers more detail:os...

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

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bash - What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)

I just want to understand following line of code in shell. It is used to get the current working directory. ... how this command get 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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810 views

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bash - Checking if output of a command contains a certain string in a shell script

I'm writing a shell script, and I'm trying to check if the output of a command contains a certain string. I ... not sure how. Does anyone know? See Question&Answers more detail:os...

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

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742 views

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bash - Sleep until a specific time/date

I want my bash script to sleep until a specific time. So, I want a command like "sleep" which takes no ... time. Is there such a command? See Question&Answers more detail:os...

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

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1.3k views

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bash - Read tab-separated file line into array

I would like to read a file into a script, line by line. Each line in the file is multiple values separated by ... in support in bash for 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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