actually, probably better with awk
Or with sed
BTW, I'm not showing off, I'm trying to improve my sed and awk skills and am using your question to try them out
if need to input a word or anything at the beginning of every file in a directory. how do i accomplish this?
say the file is named hyperten. how do i make hyperten the first line of every file in a given directory?
thanks (6 Replies)
I have a report file which somewhere has a lines starting with word ".sub"
I have a new variable named $new.
What i am trying to do is insert the content of $new just before the occurrence of ".sub" in the report file.
How can I do that? (11 Replies)
about 200 files with names as
11_0.pdb
11_60.pdb
12_12.pdb
14_180.pdb
are there in my library...I need to rename all of them by addinf File in front of them as:
File11_0.pdb
File11_60.pdb
File12_12.pdb
File14_180.pdb
I checked many threads but it seems i get even more confused..i... (1 Reply)
I want to append file names at the beginning of a line for each row
file content
abc.txt.gz 123|654|987
bcd.txt.gz 876|trf|kjh
I want a single output file with below format
abc.txt.gz|123|654|987
bcd.txt.gz|876|trf|kjh
This one is working but only with unzip files,need to have... (3 Replies)
Hi,
I am doing something like below:
cat file1>file3and
cat file2>>file3
I wanted to check if there is a way to write a custom message(hardcoded message)something like below at the beginning of each line then PIPE delimitiation and then followed by remaining record.
cat file1... (7 Replies)
Hello,
I need to put the following string to the beginning of a file - but it should not create a newline at the end of the string.
So, the file I have is a compressed one - with gzip.
And I would like to add an ASCII-String to the beginning of the file. The string has a length of 69... (5 Replies)
Hi all and apologies for the silly question, but I've searched and I can't get this right.
I have a list of email addresses in a file that I need to blacklist (spam). the list is quite long and I would need to script a small routine so that I can get the following for each line in the file:
db... (4 Replies)
Discussion started by: bm555
4 Replies
LEARN ABOUT CENTOS
strtok
STRTOK(3) Linux Programmer's Manual STRTOK(3)NAME
strtok, strtok_r - extract tokens from strings
SYNOPSIS
#include <string.h>
char *strtok(char *str, const char *delim);
char *strtok_r(char *str, const char *delim, char **saveptr);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
strtok_r(): _SVID_SOURCE || _BSD_SOURCE || _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
DESCRIPTION
The strtok() function breaks a string into a sequence of zero or more nonempty tokens. On the first call to strtok() the string to be
parsed should be specified in str. In each subsequent call that should parse the same string, str must be NULL.
The delim argument specifies a set of bytes that delimit the tokens in the parsed string. The caller may specify different strings in
delim in successive calls that parse the same string.
Each call to strtok() returns a pointer to a null-terminated string containing the next token. This string does not include the delimiting
byte. If no more tokens are found, strtok() returns NULL.
A sequence of calls to strtok() that operate on the same string maintains a pointer that determines the point from which to start searching
for the next token. The first call to strtok() sets this pointer to point to the first byte of the string. The start of the next token is
determined by scanning forward for the next nondelimiter byte in str. If such a byte is found, it is taken as the start of the next token.
If no such byte is found, then there are no more tokens, and strtok() returns NULL. (A string that is empty or that contains only delim-
iters will thus cause strtok() to return NULL on the first call.)
The end of each token is found by scanning forward until either the next delimiter byte is found or until the terminating null byte ('