I have a directory with hundreds of files that can not have data pass column 80. I do not know of way to combine "grep" and "cut" command.
I tried:
cat * | cut -c 81-120 |pg
but it only shows me the line, not the file name.
Any help would be appreciated. Been on this all... (3 Replies)
Hi,
On AIX 5200-07-00 I have a find command as following to delete files from a certain location that are more than 7 days old. I am being told that I cannot use -exec option to delete files from these directories.
Having said that I am more curious to know how this can be done.
an sample... (3 Replies)
Hello,
I have a Folder (myfile) which contain the following files:
P$12789865KR +N+01+OM+16102009165416.nu
P$M1-508962GD +N+01+ALP+14102009094417.nu
Is there a sed command(s) that will loop through this folder
and remove the spaces that exists in the filename?
Any help would be... (7 Replies)
Hi,
It's my first time here... anyways, I have a simple problem with these filenames. This is probably too easy for you guys:
ABC_20101.2A.2010_01
ABD_20103.2E.2010_04
ABE_20107.2R.2010_08
Expected Output:
ABC_20101
ABD_20103
ABE_20107
The only pattern available are the ff:
1) All... (9 Replies)
Is there an easy way to strip off a filename's extension?
For example, here's a filename:
blahblahblah.thisisok.thisisnotok
I want to get rid of .thisisnotok from the filename, so that what's left is
blahblahblah.thisisok
Thanks. I have a directory full of filenames that need to be... (5 Replies)
Hi all,
Disclosure: I am very new to Unix, but eager to learn..
I've been tasked with transferring logs to a remote server. After I've verified these logs have transferred correctly I have to remove the source files. The naming scheme is:
/directory/2012.05.01
/directory/2012.05.02
..and... (1 Reply)
Hi,
I want to remove trace files in a particular directory for a specific date range. Currently i can remove based on time (e.g find /path/*.trm -mtime +1000 -exec rm {} \;). But i want to remove .trm files within a date range. E.g to remove .trm files between jan 1 2002 to April 15 2005.
... (3 Replies)
Hi,
I'm trying to replace a range of characters by their position in each line by spaces.
I need to replace characters 95 to 145 by spaces in each line.
i tried below but it doesn't work
sed -r "s/^(.{94})(.{51})/\ /" inputfile.txt > outputfile.txt
can someone please help me... (3 Replies)
Im trying compare values between files and if they match I want to extract some characters in between those values for many files. They are in two directories and have the name filename but one ends in .enr. They look like this.
cat bat.1.enr
name,start,end
bat.1,231, 234
and another... (5 Replies)
Hi there,
I am trying to remove al letters after : character on specific columns from 10th column till 827. I used sed and cut to do so but I am sure there is better one liner someone can think of from unix community members.
Huge file but it has this structure (Total number of Columns =... (10 Replies)
Discussion started by: daashti
10 Replies
LEARN ABOUT PHP
popen
POPEN(3) 1 POPEN(3)popen - Opens process file pointerSYNOPSIS
resource popen (string $command, string $mode)
DESCRIPTION
Opens a pipe to a process executed by forking the command given by $command.
PARAMETERS
o $command
- The command
o $mode
- The mode
RETURN VALUES
Returns a file pointer identical to that returned by fopen(3), except that it is unidirectional (may only be used for reading or writing)
and must be closed with pclose(3). This pointer may be used with fgets(3), fgetss(3), and fwrite(3). When the mode is 'r', the returned
file pointer equals to the STDOUT of the command, when the mode is 'w', the returned file pointer equals to the STDIN of the command.
If an error occurs, returns FALSE.
EXAMPLES
Example #1
popen(3) example
<?php
$handle = popen("/bin/ls", "r");
?>
If the command to be executed could not be found, a valid resource is returned. This may seem odd, but makes sense; it allows you to
access any error message returned by the shell:
Example #2
popen(3) example
<?php
error_reporting(E_ALL);
/* Add redirection so we can get stderr. */
$handle = popen('/path/to/executable 2>&1', 'r');
echo "'$handle'; " . gettype($handle) . "
";
$read = fread($handle, 2096);
echo $read;
pclose($handle);
?>
NOTES
Note
If you're looking for bi-directional support (two-way), use proc_open(3).
Note
When safe mode is enabled, you can only execute files within the safe_mode_exec_dir. For practical reasons, it is currently not
allowed to have .. components in the path to the executable.
Warning
With safe mode enabled, the command string is escaped with escapeshellcmd(3). Thus, echo y | echo x becomes echo y | echo x.
SEE ALSO pclose(3), fopen(3), proc_open(3).
PHP Documentation Group POPEN(3)