Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to use printf to output a shell variable path?
Top Forums UNIX for Beginners Questions & Answers How to use printf to output a shell variable path? Post 302982628 by Don Cragun on Friday 30th of September 2016 06:33:37 PM
Old 09-30-2016
Quote:
Originally Posted by greet_sed
Hi,

Can you try this and see if this helps?

Code:
A=1234;
B=Welcome
printf "%s%s\n" "\$A\t\$B\n$A\t$B\n"

Outputs:
Code:
$A\t$B\n1234\tWelcome\n

Hi greet_sed,
That is close, but there is an extra %s in your printf format string. Since there is only one operand to be formatted, only one %s is needed:
Code:
A=1234;
B=Welcome
printf "%s\n" "\$A\t\$B\n$A\t$B\n"

produces the same results you showed us above.

Alternatively, you could also try the following (note the difference between using single quotes to avoid parameter expansions instead of escaping the dollar sign inside double quotes in the format operand):
Code:
A=1234;
B=Welcome
printf '$A\\t$B\\n%s\\t%s\\n\n' "$A" "$B"

which also produces the same output.
These 3 Users Gave Thanks to Don Cragun For This Post:
drl greet_sed steezuschrist96
 

8 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Set Path variable in c shell

I set my path environment variable in c shell, using the syntax below setenv PATH "${PATH}:/usr/local:/usr/local/bin" and placed this in $HOME/.login $HOME/.cshrc and /etc/.login /etc/.cshrc but when I issued echo $PATH or set command the output does not reflect changes made to... (5 Replies)
Discussion started by: hassan2
5 Replies

2. Shell Programming and Scripting

Reading a path (including ref to shell variable) from file

Hi! 1. I have a parameter file containing path to log files. For this example both paths are the same, one is stated directly and the second using env variables. /oracle/admin/orcl/bdump/:atlas:trc:N ${ORACLE_BASE}/admin/${ORACLE_SID}/bdump/:${ORACLE_SID}:trc:N 2. I try to parse the path... (1 Reply)
Discussion started by: lojzev
1 Replies

3. Shell Programming and Scripting

Error in setting PATH variable in bash shell

Hi, I am new to shell scripting.I tried adding an entry to the path variable like below export PATH=$PATH:/opt/xxx/bin But am getting an error invalid identifier /opt/xxx/bin Can someone tell me the error above and correct me . Thanks and Regards, Padmini (2 Replies)
Discussion started by: padmisri
2 Replies

4. Programming

capture the output of printf into another variable

Hi , I wonder if in java I can pipe the below output of the printf into a variable: System.out.printf(" This is a test %s\n", myVariable); I want to keep the output of the printf command to create my history array. Thanks. (2 Replies)
Discussion started by: arizah
2 Replies

5. Shell Programming and Scripting

C Shell path variable causing very slow shell!?HELP

I am using C Shell MKS Toolkit and I ran into a huge problem when setting up some environment variables.:confused: The csh script that I have as my login script runs fine but very very slow. When I add a directory to my PATH it seems to slow down shell startup and even slow down the commands. ... (0 Replies)
Discussion started by: vas28r13
0 Replies

6. Shell Programming and Scripting

"find . -printf" without prepended "." path? Getting path to current working directory?

If I enter (simplified): find . -printf "%p\n" then all files in the output are prepended by a "." like ./local/share/test23.log How can achieve that a.) the leading "./" is omitted and/or b.) the full path to the current directory is inserted (enclosed by brackets and a blank)... (1 Reply)
Discussion started by: pstein
1 Replies

7. Shell Programming and Scripting

Parse output path to set variable

I am looking to parse a text file output and set variables based on what is cropped from the parsing. Below is my script I am looking to add this feature too. All it does is scan a certain area of users directories for anyone using up more than X amount of disk space. It then writes to the... (4 Replies)
Discussion started by: es760
4 Replies

8. UNIX for Dummies Questions & Answers

Locating shell script files with the $PATH variable

I've created a test script, which is located in $HOME/bin. The script runs as expected with no issues. However, upon echo'ing the $path variable the location of my script is not located in any of the directories listed in $path. So my question is, how does shell know where the script is located... (2 Replies)
Discussion started by: BrandonD
2 Replies

LEARN ABOUT SUSE

irsend

IRSEND(1)								FSF								 IRSEND(1)

NAME

       irsend - basic LIRC program to send infra-red commands

SYNOPSIS

       irsend [options] DIRECTIVE REMOTE CODE [CODE...]

DESCRIPTION

       Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such
       as TV boxes, HiFi sets, etc.

       DIRECTIVE can be:
	  SEND_ONCE	    - send CODE [CODE ...] once
	  SEND_START	    - start repeating CODE
	  SEND_STOP	    - stop repeating CODE
	  LIST		    - list configured remote items
	  SET_TRANSMITTERS  - set transmitters NUM [NUM ...]
	  SIMULATE	    - simulate IR event

       REMOTE is the name of a remote, as described in the lircd configuration file.

       CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file.

       NUM is the transmitter number of the hardware device.

       For the LIST DIRECTIVE, REMOTE and/or CODE can be empty:

	  LIST	 ""    ""   - list all configured remote names
	  LIST REMOTE  ""   - list all codes of REMOTE
	  LIST REMOTE CODE  - list only CODE of REMOTE

       The SIMULATE command only works if it has been explicitly enabled in lircd.

       -h --help
	      display usage summary

       -v --version
	      display version

       -d --device
	      use given lircd socket [/var/run/lirc/lircd]

       -a --address=host[:port]
	      connect to lircd at this address

       -# --count=n
	      send command n times

EXAMPLES

	  irsend LIST DenonTuner ""
	  irsend SEND_ONCE  DenonTuner PROG-SCAN
	  irsend SEND_ONCE  OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP
	  irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3
	  irsend SEND_STOP  OnkyoAmpli VOL-DOWN
	  irsend SET_TRANSMITTERS 1
	  irsend SET_TRANSMITTERS 1 3 4
	  irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S"

FILES

       /etc/lirc/lircd.conf
	      Default lircd configuration file.  It should contain all the remotes, their infra-red codes and the corresponding timing	and  wave-
	      form details.

DIAGNOSTICS

       If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics:
       "irsend: could not connect to socket"
       "irsend: Connection refused" (or "Permission denied").

SEE ALSO

       The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.

       lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org.

irsend 0.8.7pre1						     May 2010								 IRSEND(1)
All times are GMT -4. The time now is 05:29 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy