sch

top accounts reputation activity subscriptions

Why not use "which"? What to use then?

shell history which portability asked Aug 1, 2013 at 22:58

unix.stackexchange.com

266 votes

Security implications of forgetting to quote a variable in bash/POSIX shells

bash shell shell-script security quoting asked Dec 3, 2014 at 21:59

unix.stackexchange.com

123 votes

On what systems is //foo/bar different from /foo/bar?

filenames history portability slash asked Jan 20, 2016 at 10:20

unix.stackexchange.com

43 votes

Why the "-" in the "#! /bin/sh -" shebang?

shell-script asked Mar 15, 2017 at 21:39

unix.stackexchange.com

40 votes

Most efficient way to check if $string starts with $needle in perl

performance perl string-matching asked Jul 30, 2015 at 13:00

stackoverflow.com

38 votes

What's wrong with var=$(</dev/stdin) to read stdin into a variable?

bash zsh io-redirection ksh stdin asked Sep 7, 2022 at 8:22

unix.stackexchange.com

32 votes

Security implications of running perl -ne '...' *

security perl filenames options asked Nov 26, 2014 at 8:15

unix.stackexchange.com

29 votes

How can we know who's at the other end of a pseudo-terminal device?

terminal-emulator open-files pty asked Jun 11, 2014 at 20:12

unix.stackexchange.com

28 votes

How to execute an arbitrary simple command over ssh without knowing the login shell of the remote user?

ssh quoting portability asked May 25, 2015 at 20:11

unix.stackexchange.com

23 votes

Get the display width of a string of characters

shell-script unicode asked Nov 23, 2015 at 21:02

unix.stackexchange.com

Top Answers

945

Why is printf better than echo?

unix.stackexchange.com

529

Why not use "which"? What to use then?

unix.stackexchange.com

481

What does "LC_ALL=C" do?

unix.stackexchange.com

436

How do I trim leading and trailing whitespace from each line of some output?

unix.stackexchange.com

366

Why is using a shell loop to process text considered bad practice?

unix.stackexchange.com

352

How to export variables from a file?

unix.stackexchange.com

312

ssh-add complains: Could not open a connection to your authentication agent

unix.stackexchange.com

305

Why do I need a tty to run sudo if I can sudo without a password?

unix.stackexchange.com

286

How to tell gzip to keep original file?

unix.stackexchange.com

275

Security implications of forgetting to quote a variable in bash/POSIX shells

unix.stackexchange.com

259

Sort based on the third column

unix.stackexchange.com

248

How to determine where an environment variable came from?

unix.stackexchange.com

247

How to make `sudo` preserve $PATH?

unix.stackexchange.com

224

How to stop the find command after first match?

unix.stackexchange.com

207

When was the shellshock (CVE-2014-6271/7169) bug introduced, and what is the patch that fully fixes it?

unix.stackexchange.com

196

Find and remove large files that are open but have been deleted

unix.stackexchange.com

176

Simple way to create a tunnel from one local port to another?

unix.stackexchange.com

172

The result of ls * , ls ** and ls ***

unix.stackexchange.com

169

How do you use the command coproc in various shells?

unix.stackexchange.com

164

Understanding "IFS= read -r line"

unix.stackexchange.com

159

What is the difference between "cat file | ./binary" and "./binary < file"?

unix.stackexchange.com

157

`find` with multiple `-name` and `-exec` executes only the last matches of `-name`

unix.stackexchange.com

147

Copy the contents of a file into the clipboard without displaying its contents

unix.stackexchange.com

142

List all available ssl ca certificates

unix.stackexchange.com

141

Remove last character from line

unix.stackexchange.com

135

remove particular characters from a variable using bash

unix.stackexchange.com

134

How can I use column to delimit on tabs and not spaces?

unix.stackexchange.com

129

How to run grep with multiple AND patterns?

unix.stackexchange.com

122

How can I remove the BOM from a UTF-8 file?

unix.stackexchange.com

122

What is the purpose of the "do" keyword in Bash for loops?

unix.stackexchange.com