Checking and replacing first line in text file, one-liner?
Hello,
I'm looking to check only the first line of a file to see if it is a format string, like
if the first line is anything else, insert the above string.
I'd appreciate a one liner as I'm putting this command inside of a
so far I'm hacking awk that looks like
which correctly detects if the format string is there or not but can't seem to figure out how to get awk to redirect the pipe to insert the format string?
I must remove hex characters 0A and 0D from several fields within an MS Access Table. Since I don't think it can be done in Access, I am trying here.
I am exporting a Table from Access (must be fixed length fields, I think, for my idea to work here) into a text format.
I then want to run a... (2 Replies)
Hello,
I have the following report (report.txt) file (see attached).
I would like to check the file and if the field is error, then showing error message at output.
1. In the report, 1st, 2st and 3nd line can be ignore to check
2. start to check line 4 (each field use "," to split
- 1st... (1 Reply)
Hi
I need a perl onliner to delete a line in a file starting with few words.
Example
file.txt
----------
my name is don
I live in London
I am woking as engineer
I want to delete a line starting with 'I live in' using perl oneliner and in place edit with out temporary files
Thanks... (2 Replies)
can someone help me translate the following command, from:
/usr/bin/awk "/^$TOFDAYM $TOFDAYD /,0" $LOGFILE
to something like
perl -e .....
basically, i want to use perl to do awk functions within a shell script. i want to do the above awk, using perl.
any suggestions? (9 Replies)
I have file like this
"copy table_name from filea.txt on node replace delimiter '|';"
"copy table_name from fileb.txt on node replace delimiter '|';"
"copy table_name from filec.txt on node replace delimiter'|';"
"copy table_name from filee.txt on node replace delimiter '|';"
"copy... (1 Reply)
Hi
I need to write a Perl script that the file given as first argument of the command line that will find all occurrences of the string given as the third argument of the command line and replace with the string given as the fourth argument. Name newfound file is specified as the second... (3 Replies)
Is it possible to replace a line of text within a file while it's closed with a single command or a script? Please show me an example or point me to a webpage that shows an example. The file has this line of text:
LoginGraceTime 100
I want to replace it with the following:
... (2 Replies)
Hi,
I've got this output:
# cat test2.txt
TM1ITP1-TMNLSTP1 SLC00=0,SLC01=0,SLC02=0,SLC03=0
if I just use cat test2.txt | tr "," "\n" I'll end up very near to what I'm trying to achieve:
TM1ITP1-TMNLSTP1 SLC00=0
SLC01=0
SLC02=0
SLC03=0
But how can i eventually add the term... (1 Reply)
Hi
I want to replace time stamp in the following line
PROCNAME.Merge.exchMon.CODE.T_QSTART 08:45 read
assuming the new time stamp is 09:45 ; the line is getting replaced as below
:45 read
I'm trying to use the perl one liner in bash script
perl -pi... (4 Replies)
Discussion started by: charlie87
4 Replies
LEARN ABOUT LINUX
irsend
IRSEND(1) User Commands 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 0.9.0-pre1 October 2010 IRSEND(1)