Home > Syntax Error > Bash Catch Syntax Error

Bash Catch Syntax Error


Shotts, Jr. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the UNIX is a registered trademark of The Open Group. By subtracting 1 from the line number the alias will tell me where the failure occurred. this contact form

On THE other hand or on another hand? asked 4 years ago viewed 12444 times active 11 months ago Related 7How can I trap a program that returns 139 (segmentation fault) in bash?8How to trigger error using Trap command3Getting UNIX is a registered trademark of The Open Group. asked 2 years ago viewed 49769 times active 1 month ago Linked 30 Linux shell try catch finally 2 Bash emulation of try/catch not working as expected 0 Test for failed

Bash Syntax Error Near Unexpected Token Done'

Example 2 Example bash commands: $ trap 'echo error' ERR # Set ERR trap $ false # Non-zero exit status will be trapped error $ (false) # Non-zero exit status within How rich can one single time travelling person actually become? I didn't specify in my original question that I need a native solution. A clean_up function While the trap command has solved the problem, we can see that it has some limitations.

Here's the code that's responsible just for try & catch: set -o pipefail shopt -s expand_aliases declare -ig __oo__insideTryCatch=0 # if try-catch is nested, then set +e before so the parent Password Protected Wifi, page without HTTPS - why the data is send in clear text? In a GNU C macro envSet(name), what does (void) "" name mean? Bash Syntax Error Near Unexpected Token Then' The presence of the lock file will prevent the program from restarting until the lock file is manually removed.

Second, the ${a[#]} is weird and its is why is giving errors... Bash Syntax Error Near Unexpected Token Else' So I use something that looks a little complicated, but is easy to use. All-caps is conventional only for shell builtins and environment variables -- using lowercase for everything else prevents namespace conflicts. While it needs a file name passed on the command line, it doesn't check that it got one, and it doesn't check that the file actually exists.

Trap exit. # This script is supposed to run in a subshell. # See also: http://fvue.nl/wiki/Bash:_Error_handling # Trap non-normal exit signals: 1/HUP, 2/INT, 3/QUIT, 15/TERM, ERR trap onexit 1 2 3 Bash Syntax Error Near Unexpected Token Do' share|improve this answer answered Sep 16 '08 at 6:28 Bruno De Fraine 20.3k54055 12 set -e is not without gotchas: See mywiki.wooledge.org/BashFAQ/105 for several. –Charles Duffy Jul 30 '12 at Yes, of course I'm an adult! You can download some bash functions to do that from http://jimavera.cixx6.com/Carp.bash Perl programmers will feel right at home with these. (Sorry, I could not put the actual code in this post

Bash Syntax Error Near Unexpected Token Else'

trap "{ rm -f $LOCKFILE ; exit 255; }" EXIT touch $LOCKFILE makewhatis -u -w exit 0


asked 8 years ago viewed 147606 times active 8 months ago Linked 0 How to do exception handling in shell script? 1 bash set -e: How to find out on which http://sovidi.com/syntax-error/bash-arithmetic-syntax-error.php Use the control operators `&&' and `||' if you want to control the last command executed: $ (false; true) || echo foo $ (false && true) || echo foo foo $ How to pluralize "State of the Union" without an additional noun? This means if you have the following apple.sh: set -e func() { echo '...some commands #X...' false # Suppose ./banana.sh fails here echo '...some commands #Y...' true } if func; then Bash Syntax Error Invalid Arithmetic Operator

In the script above, the following line of code created the temporary file $TEMP_FILE: TEMP_FILE=$TEMP_DIR/printfile.$$.$RANDOM The $TEMP_DIR variable contains either /tmp or ~/tmp depending on the availability of the directory. It prints error or warning messages in red, one line per parameter, and allows an optional exit code. # Custom errors EX_UNKNOWN=1 warning() { # Output warning messages # Color the Not the answer you're looking for? http://sovidi.com/syntax-error/bash-if-syntax-error.php It is just lacking that context.

trap 'handle_error "$_"' ERR share|improve this answer answered Aug 8 '13 at 5:22 community wiki Orwellophile add a comment| up vote 0 down vote Using trap is not always an option. Bash Syntax Error Near Unexpected Token Newline' How would family relationships change if legal system uses collective punishment? trap The trap command allows you to execute a command when a signal is received by your script.

A signal may also be specified as ERR; in that case COMMANDS are executed each time a simple command exits with a non-zero status.

It should work in all POSIX-compatible shells if you remove local keywords, i.e. share|improve this answer answered Oct 8 '08 at 10:41 yukondude 12.3k123752 add a comment| up vote 3 down vote I've used die() { echo $1 kill $$ } before; i think It further extends the idea of try & catch with things like error handling with backtrace and exceptions (plus some other nice features). Bash Syntax Error Unexpected End Of File The shell is bash.

I like to check everything for failure. This site is not affiliated with Linus Torvalds or The Open Group in any way. Catching signalsNext12.2. his comment is here About your wish: I expected such safe behavior from a sensible programming language...

At a minimum, the gotchas in question should be well-understood. –Charles Duffy Sep 11 '12 at 13:17 2 set -e -o pipefail -u # and know what you are doing Can Customs make me go back to return my electronic equipment or is it a scam? Will the medium be able to last 100 years? Then, back in the main process, we can check the return code to handle a catch block. #!/bin/bash set +e bash -e <