CODEWITHSUNDEEP
unixtcsh
yatici
yatici

Reputation: 577

if statement not working for tcsh but works fine on bash

This is working fine on bash but I need to get it working in tcsh. Below is the code I use:

if [ -e ~/test/file ]; then echo 'yes'; else echo | mail -s 'not done' [email protected] ; fi

This basic code gives me an error saying if: Expression Syntax.

I have no idea what the error means and not sure why the if statement is not working. I have spaces before/after brackets. I tried if ( test -f ~/test/file ) and got the same error.

I am lost as by default I use bash and this error gives no insight. I see a few similar cases but nothing about checking existence of a file.

Upvotes: 0

Views: 1550

Answers (2)

Mark Armstrong
Mark Armstrong

Reputation: 440

you can run on one line using the test command in a sequence of commands:

test -e ~/test/file && echo 'yes' || mail -s 'not done' [email protected]

or if you are not interested in the positive case, you can use the short "if" format

if ( ! -e ~/test/file ) mail -s 'not done' [email protected]

Upvotes: 1

Nigel
Nigel

Reputation: 354

See the 'File inquiry operators' section of the tcsh man page.

The tcsh sytnax for what you are describing is

if ( -e ~/test/file ) then
    echo 'yes'
else
    echo | mail -s 'not done' [email protected]
endif

Note that tcsh isn't good at running pieces of code on one line.

Upvotes: 1

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