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Full Discussion: Double Quotes with sh -c
Top Forums Shell Programming and Scripting Double Quotes with sh -c Post 302386038 by jsmithstl on Monday 11th of January 2010 06:04:54 AM
Old 01-11-2010
The -c option tells the shell to read the commands from the given string: In your case:

Code:
sh -c "echo "`date` Starting the workflow" >> MYLOG_`date '+%d%m%Y'`.log"

The problem is, sh thinks "echo " is that string. When I run your command, I get:

Code:
$ sh -c "echo "`date` Starting the workflow" >> MYLOG_`date '+%d%m%Y'`.log"   
Mon

If you escape the inside double quotes, it should fix your problem:

Code:
$ sh -c "echo \"`date` Starting the workflow\" >> MYLOG_`date '+%d%m%Y'`.log"

$ ls -lrt MYLOG_*
-rw-r--r-- 1 jsmith jsmith 153 2010-01-11 04:59 MYLOG_11012010.log

Read the man page "man sh" regarding the -c parameter for more information.

Last edited by jsmithstl; 01-11-2010 at 07:07 AM.. Reason: Adjusted code tags
 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - Reads one line from standard input SYNOPSIS
line STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: line: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
None DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command within a shell command file to read from your terminal. The line command always writes at least a newline character. NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead. EXIT STATUS
Success. End-of-File. EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log This shell procedure displays the message: Enter comments for the log: It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon) prompt. See the echo command for information about the c escape sequence. SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p) Functions: read(2) Standards: standards(5) line(1)
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