Tag: exit

• Understanding bash fundamentals and also about return command

  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 […]

  Jeffrin Jose T

  25 Feb 2019

  Bash, Bash Builtin

  exit, return, status

• Tinkering with trap and exit commands

  TYPICAL COMMANDLINE SESSION [bash] $echo $? 0 $echo $? 0 $exit 10 | tee solve.txt $cat solve.txt $rm solve.txt $exit 10 | echo $? 0 $exit -1 | echo $? 0 $exit -1 | echo $? 0 $false | true $echo $? 0 $false $echo $? 1 $true $echo $? 0 $exit 5 | tee […]

  Jeffrin Jose T

  7 Apr 2018

  operating system

  command, error, exit, exit n

• How to check exit status of a command ?

  $stat stat: missing operand Try ‘stat –help’ for more information. $echo $? 1 $stat popen1-p1.c File: ‘popen1-p1.c’ Size: 473 Blocks: 8 IO Block: 4096 regular file Device: 801h/2049d Inode: 5245647 Links: 1 Access: (0644/-rw-r–r–) Uid: ( 1000/ jeffrin) Gid: ( 1000/ jeffrin) Access: 2014-06-16 23:31:58.746088758 +0530 Modify: 2014-06-16 23:31:27.649735653 +0530 Change: 2014-06-16 23:31:27.649735653 +0530 Birth: […]

  Jeffrin Jose T

  16 Jun 2014

  operating system

  exit, status