{"id":18010,"date":"2019-02-25T20:06:09","date_gmt":"2019-02-25T20:06:09","guid":{"rendered":"http:\/\/www.beautifulwork.org\/?p=18010"},"modified":"2019-02-25T20:06:09","modified_gmt":"2019-02-25T20:06:09","slug":"bash-and-return-command","status":"publish","type":"post","link":"https:\/\/www.trueangle.org\/index.php\/2019\/02\/25\/bash-and-return-command\/","title":{"rendered":"Understanding bash fundamentals and also about return command"},"content":{"rendered":"

ABOUT return<\/u><\/p>\n

\nCauses  a  function to stop executing and return the value specified by n to its caller.  If n is\nomitted, the return status is that of the last command executed in the function body.\n<\/pre>\n
TYPICAL COMMAND LINE EXPOSURE<\/u>
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\necho "10"
\n}<\/p>\n
e
\nvalue=e
\n#echo $value<\/p>\n
$bash .\/learn
\nhello
\n10
\n$<\/p>\n
[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\necho "10"
\n}<\/p>\n
value=e
\necho $value<\/p>\n
$bash .\/learn
\ne
\n$
\n[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\necho "10"
\n}<\/p>\n
value=$(e)
\necho $value<\/p>\n
$bash .\/learn
\nhello 10
\n$<\/p>\n
[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\necho "10"
\n}<\/p>\n
value=$(e)
\n#echo $value<\/p>\n
$bash .\/learn
\n$<\/p>\n
[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\necho "10"
\n}<\/p>\n
e
\nvalue=$(e)
\n#echo $value<\/p>\n
$bash .\/learn
\nhello
\n10
\n$
\n[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\necho 10
\n}<\/p>\n
e
\nvalue=$(e)
\n#echo $value<\/p>\n
$bash .\/learn
\nhello
\n10
\n$<\/p>\n
[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\nreturn 10
\n}<\/p>\n
e
\nvalue=$(e)
\necho $value<\/p>\n
$bash .\/learn
\nhello
\nhello
\n$<\/p>\n
[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\nreturn 10
\n}<\/p>\n
e
\nvalue=$(e)
\necho $value
\necho $?<\/p>\n
$bash .\/learn
\nhello
\nhello
\n0
\n$<\/p>\n
[\/bash]
\n[bash]
\n$cat learn
\nfunction e() {
\necho hello
\nreturn 10
\n}<\/p>\n
e
\necho $?<\/p>\n
$bash .\/learn
\nhello
\n10
\n$<\/p>\n
[\/bash]
\nLINKS
\nhttps:\/\/ryanstutorials.net\/bash-scripting-tutorial\/bash-functions.php<\/a>
\nhttps:\/\/stackoverflow.com\/questions\/4419952\/difference-between-return-and-exit-in-bash-functions<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
ABOUT return Causes a function to stop executing and return the value specified by n to its caller. If n is omitted, the return status is that of the last command executed in the function body. TYPICAL COMMAND LINE EXPOSURE [bash] $cat learn function e() { echo hello echo "10" } e value=e #echo $value … <\/p>\n
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