query: What is the $? (dollar question mark) variable in shell scripting?
positive_passages.docid: 6462
positive_passages.text: Meaning of $? (dollar question mark) in shell scripts
negative_passages.docid: 35426
negative_passages.text: Why does echo $$ return a number?
negative_passages.docid: 26972
negative_passages.text: What are '$$' used for in PL/pgSQL
negative_passages.docid: 20567
negative_passages.text: Why does shell ignore quoting characters in arguments passed to it through variables?
negative_passages.docid: 2583
negative_passages.text: Quoting within $(command substitution) in Bash
negative_passages.docid: 91340
negative_passages.text: Testing if a variable is empty in a shell script
negative_passages.docid: 147454
negative_passages.text: Why does bash set $? (exit status) to non-zero on Ctrl-C or Ctrl-Z?
negative_passages.docid: 136641
negative_passages.text: Can someone explain the dollar sign in Javascript?
negative_passages.docid: 106701
negative_passages.text: Bash: What does ">|" do?
negative_passages.docid: 59166
negative_passages.text: When to wrap quotes around a shell variable?
negative_passages.docid: 148295
negative_passages.text: Shell variable $_ not behaving as expected
negative_passages.docid: 100230
negative_passages.text: Reading a javascript script, why so many $ (dollar signs)?
negative_passages.docid: 111133
negative_passages.text: Difference between 'ls' and 'echo $(ls)'
negative_passages.docid: 75274
negative_passages.text: Special variables in bash
negative_passages.docid: 77132
negative_passages.text: Shell script, saving the command value to a variable
negative_passages.docid: 134554
negative_passages.text: What is the significance of the trailing dollar sign `$` on identifiers in SQL Server?
negative_passages.docid: 36359
negative_passages.text: What does $# mean in shell?