Issue:
i have variable A which is an alias for variable B which is equal to "THIS IS A TEST"
when every i echo variable A i only get the alias name for variable B, NOT the contents of variable B.
HOSTNAME# echo $TESTIT
+ echo THIS IS A TEST
THIS IS A TEST
HOSTNAME# ls -l
total... (10 Replies)
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
I am trying to find a specific set of characters in a long file. I only want to find the characters in column 265 for 4 bytes.
Is there a search for that? I tried cut but couldn't get it to work.
Ex. I want to find '9999' in column 265 for 4 bytes. If it is in there, I want it to print... (12 Replies)
Hi all, I need help.
I have an input text file (input.txt) like this:
21 GTGCAACACCGTCTTGAGAGG 50
21 GACCGAGACAGAATGAAAATC 73
21 CGGGTCTGTAGTAGCAAACGC 108
21 CGAAAAATGAACCCCTTTATC 220
21 CGTGATCCTGTTGAAGGGTCG 259
Now I need to count A/T/G/C numbers at each character location in column... (2 Replies)
Hi all,
I have a source config file with variables like so:
eth1_ip=192.168.1.99
eth2_ip=192.168.1.123
eth3_ip=172.16.1.1
I am trying to run a script which loops based on the number of eth interfaces on a machine and therefore modifies the variable it calls in the environment based on the... (5 Replies)
Need command for position based replace:
I need a command to replace with 0 for characters in the positions 11 to 20 to all the lines starts with 6 in a file.
For example the file ABC.txt has:
abcdefghijklmnopqrstuvwxyz
6abcdefghijklmnopqrstuvwxyz
abcdefghijklmnopqrstuvwxyz... (4 Replies)
Hi All,
I have file which have looks like below
abc=${def}
def=${efg}
efg= "this is the actual value"
based on "abc" value I have to call "efg" value , Am using below lines but it is not working
#!/bin/bash
source file.txt
echo $abc
Please wrap all code, files, input &... (5 Replies)
Hi ,
I have a requirement to read a file ( 5 fields , ~ delimited) and find the records which contain anything other than Alphabets, Numbers , comma ,space and dot . ie a-z and A-Z and 0-9 and . and " " and , in 2nd field. Once I do that i would want the result to have field1|<flag>
flag can... (2 Replies)
Discussion started by: ashwin3086
2 Replies
LEARN ABOUT SUSE
symlink
SYMLINK(2) Linux Programmer's Manual SYMLINK(2)NAME
symlink - make a new name for a file
SYNOPSIS
#include <unistd.h>
int symlink(const char *oldpath, const char *newpath);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
symlink(): _BSD_SOURCE || _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200112L
DESCRIPTION
symlink() creates a symbolic link named newpath which contains the string oldpath.
Symbolic links are interpreted at run time as if the contents of the link had been substituted into the path being followed to find a file
or directory.
Symbolic links may contain .. path components, which (if used at the start of the link) refer to the parent directories of that in which
the link resides.
A symbolic link (also known as a soft link) may point to an existing file or to a nonexistent one; the latter case is known as a dangling
link.
The permissions of a symbolic link are irrelevant; the ownership is ignored when following the link, but is checked when removal or renam-
ing of the link is requested and the link is in a directory with the sticky bit (S_ISVTX) set.
If newpath exists it will not be overwritten.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EACCES Write access to the directory containing newpath is denied, or one of the directories in the path prefix of newpath did not allow
search permission. (See also path_resolution(7).)
EEXIST newpath already exists.
EFAULT oldpath or newpath points outside your accessible address space.
EIO An I/O error occurred.
ELOOP Too many symbolic links were encountered in resolving newpath.
ENAMETOOLONG
oldpath or newpath was too long.
ENOENT A directory component in newpath does not exist or is a dangling symbolic link, or oldpath is the empty string.
ENOMEM Insufficient kernel memory was available.
ENOSPC The device containing the file has no room for the new directory entry.
ENOTDIR
A component used as a directory in newpath is not, in fact, a directory.
EPERM The file system containing newpath does not support the creation of symbolic links.
EROFS newpath is on a read-only file system.
CONFORMING TO
SVr4, 4.3BSD, POSIX.1-2001.
NOTES
No checking of oldpath is done.
Deleting the name referred to by a symlink will actually delete the file (unless it also has other hard links). If this behavior is not
desired, use link(2).
SEE ALSO ln(1), lchown(2), link(2), lstat(2), open(2), readlink(2), rename(2), symlinkat(2), unlink(2), path_resolution(7), symlink(7)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2007-07-26 SYMLINK(2)