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Hiding user input on terminal in Linux script
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Just supply -s to your read call like so:
$ read -s PASSWORD
$ echo $PASSWORD
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How to get the first line of a file in a bash script?
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Significantly more overhead than the read approach. $() forks off a subshell, and using an external command (any external command) means you're calling execve(), invoking the linker and loader (if it's using shared libraries, which is usually the case), etc.
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How to send a simple string between two programs using pipes?
...lose(fd);
/* remove the FIFO */
unlink(myfifo);
return 0;
}
reader.c
#include <fcntl.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
#define MAX_BUF 1024
int main()
{
int fd;
char * myfifo = "/tmp/myfifo";
char buf[MAX_BUF];
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Where to place $PATH variable assertions in zsh?
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tl;dr version: use ~/.zshrc
And read the man page to understand the differences between:
~/.zshrc, ~/.zshenv and ~/.zprofile.
Regarding my comment
In my comment attached to the answer kev gave, I said:
This seems to be incorrect - /etc/profil...
How do you read from stdin?
...o do it.
sys.stdin is a file-like object on which you can call functions read or readlines if you want to read everything or you want to read everything and split it by newline automatically. (You need to import sys for this to work.)
If you want to prompt the user for input, you can use raw_input...
How to open a file for both reading and writing?
Is there a way to open a file for both reading and writing?
4 Answers
4
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What is the rationale for fread/fwrite taking size and count as arguments?
We had a discussion here at work regarding why fread and fwrite take a size per member and count and return the number of members read/written rather than just taking a buffer and size. The only use for it we could come up with is if you want to read/write an array of structs which aren't evenly div...
node and Error: EMFILE, too many open files
..._limits.so
file: /etc/security/limits.conf (add to the end, or edit if already exists)
root soft nofile 40000
root hard nofile 100000
restart your nodejs and logout/login from ssh.
this may not work for older NodeJS you'll need to restart server
use instead of if your node runs with di...
How to read a text file reversely with iterator in C#
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Reading text files backwards is really tricky unless you're using a fixed-size encoding (e.g. ASCII). When you've got variable-size encoding (such as UTF-8) you will keep having to check whether you're in the middle of a cha...
Reading/parsing Excel (xls) files with Python
What is the best way to read Excel (XLS) files with Python (not CSV files).
12 Answers
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