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How to get the first line of a file in a bash script?
I have to put in a bash variable the first line of a file. I guess it is with the grep command, but it is any way to restrict the number of lines?
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Diff files present in two different directories
I have two directories with the same list of files. I need to compare all the files present in both the directories using the diff command. Is there a simple command line option to do it, or do I have to write a shell script to get the file listing and then iterate through them?
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open read and close a file in 1 line of code
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11 Answers
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Deleting lines from one file which are in another file
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9 Answers
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Find unmerged Git branches?
I have a Git repository with many branches, some of them already merged and some not. Since the number of branches is quite large, how can I determine which branches have not yet been merged? I would like to avoid having to do an "octopus" merge and re-merging branches that have already been merged....
How to make execution pause, sleep, wait for X seconds in R?
How do you pause an R script for a specified number of seconds or miliseconds? In many languages, there is a sleep function, but ?sleep references a data set. And ?pause and ?wait don't exist.
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How do I git rm a file without deleting it from disk? [duplicate]
The command removes the file in my system. I meant it to remove only the file from Git-repository.
2 Answers
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Remove and Replace Printed items [duplicate]
I was wondering if it was possible to remove items you have printed in Python - not from the Python GUI, but from the command prompt.
e.g.
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Replace all whitespace characters
I want to replace all occurrences of white space characters (space, tab, newline) in JavaScript.
How to do so?
9 Answer...