55
votes
16
answers
1.9K
views
How to remove a directory from git repository?
I have 2 directories on my GitHub repository. I'd like to delete one of them. How could I do that without
68
votes
9
answers
1.1K
views
How does "cat << EOF" work in bash?
I needed to write a script to enter multi-line input to a program (psql). After a bit of googling, I found th
56
votes
9
answers
2K
views
Redirect all output to file in Bash
I know that in Linux, to redirect output from the screen to a file, I can either use the > or tee. How
50
votes
30
answers
2.1K
views
Pipe to/from the clipboard in a Bash script
Is it possible to pipe to/from the clipboard in Bash? Whether it is piping to/from a device handle or using an
60
votes
10
answers
1.8K
views
How to redirect output to a file and stdout
In bash, calling foo would display any output from that command on the stdout. Calling foo > output would
56
votes
27
answers
498
views
How to count lines in a document?
I have lines like these, and I want to know how many lines I actually have... 09:16:39 AM all 2.00 0.0
65
votes
15
answers
1.2K
views
Looping through the content of a file in Bash
How do I iterate through each line of a text file with Bash? With this script: echo "Start!" for p in (pepti
58
votes
30
answers
729
views
How to change the output color of echo in Linux
I am trying to print a text in the terminal using echo command. I want to print the text in a red color. How
58
votes
30
answers
1.5K
views
How do I test if a variable is a number in Bash?
I just can't figure out how do I make sure an argument passed to my script is a number or not. All I wan
56
votes
7
answers
2.9K
views
When do we need curly braces around shell variables?
In shell scripts, when do we use {} when expanding variables? For example, I have seen the following: var=10
56
votes
12
answers
844
views
How to 'grep' a continuous stream?
Is that possible to use grep on a continuous stream? What I mean is sort of a tail -f <file> command, b
54
votes
22
answers
3K
views
Extract substring in Bash
Given a filename in the form someletters_12345_moreleters.ext, I want to extract the 5 digits and put them int
56
votes
10
answers
2.9K
views
How do I pause my shell script for a second before continuing?
I have only found how to wait for user input. However, I only want to pause so that my while true doesn't
59
votes
17
answers
2.7K
views
Add line break to 'git commit -m' from the command line
I am using Git from the command line and am trying to add a line break to the commit message (using git commit
54
votes
16
answers
788
views
Count number of lines in a git repository
How would I count the total number of lines present in all the files in a git repository? git ls-files gives
57
votes
8
answers
1.9K
views
What does set -e mean in a bash script?
I'm studying the content of this preinst file that the script executes before that package is unpacked fr
56
votes
18
answers
1.4K
views
How to call one shell script from another shell script?
I have two shell scripts, a.sh and b.sh. How can I call b.sh from within the shell script a.sh?
66
votes
9
answers
3K
views
Assigning default values to shell variables with a single command in bash
I have a whole bunch of tests on variables in a bash (3.00) shell script where if the variable is not set, the
58
votes
21
answers
1.3K
views
Get current directory name (without full path) in a Bash script
How would I get just the current working directory name in a bash script, or even better, just a terminal comm
57
votes
10
answers
1.2K
views
Replace one substring for another string in shell script
I have "I love Suzi and Marry" and I want to change "Suzi" to "Sara". #!/bin/bash firstString="I love Suzi an
