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1. Shell Programming and Scripting
I asked this before, but my problem got more complicated. Heres what I am trying to do:
I'm trying to replace a string at a certain location with another string.
Heres the file I'm trying to change:
\E
I want to replace the escape code at the 3rd line, 2nd column with this escape code... (3 Replies)
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2. Shell Programming and Scripting
Greetings.
I don't have experience programing scripts. I need to insert a string in a specific position of another string on another file (last.cfg), for example:
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login_interval=1800
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3. Shell Programming and Scripting
I am trying to use sed to replace specific characters at a specific position in the file with a different value... can this be done?
Example:
File:
A0199999123
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Any help is appreciated. (5 Replies)
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I need to print lines with character S at nth position in a file...can someone pl help me with appropriate awk command for this (2 Replies)
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6. Shell Programming and Scripting
Hi, guys. I have one question:
How can I search for a line with certain string in it and then insert a string into this line?
For example:
There is a file called shadow, the contents of it are below:
**************************
...
yuanz:VIRADxMsadfDF/Q:0:0:50:7:::... (9 Replies)
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7. Shell Programming and Scripting
Hello All,
I am new to this forum. I am currently facing a problem in manipulating files.
I have two files called old-matter and new-matter
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abc: this, is a, sample, entry
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8. Shell Programming and Scripting
--------------------------------------------------------------------------------
Have to check in a file that the lines starting with 620 and 705
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82012345
62023232323
70523949558
62023255454
9999
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9. Shell Programming and Scripting
Hi Folks,
I have a file with all fields defined by byte position, but any field can be empty so I cannot print lines based on a search of specific columns. I need to print all lines of this file where the string of two characters at byte position 100-101 contains the number 27. Any ideas?
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10. Shell Programming and Scripting
Hi All,
I would like to use sed to add "-" between the following string:
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Pls advice. Thx a lot
Victor (5 Replies)
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SD_JOURNAL_GET_CURSOR(3) sd_journal_get_cursor SD_JOURNAL_GET_CURSOR(3)
NAME
sd_journal_get_cursor, sd_journal_test_cursor - Get cursor string for or test cursor string against the current journal entry
SYNOPSIS
#include <systemd/sd-journal.h>
int sd_journal_get_cursor(sd_journal* j, char ** cursor);
int sd_journal_test_cursor(sd_journal* j, const char * cursor);
DESCRIPTION
sd_journal_get_cursor() returns a cursor string for the current journal entry. A cursor is a serialization of the current journal position
formatted as text. The string only contains printable characters and can be passed around in text form. The cursor identifies a journal
entry globally and in a stable way and may be used to later seek to it via sd_journal_seek_cursor(3). The cursor string should be
considered opaque and not be parsed by clients. Seeking to a cursor position without the specific entry being available locally will seek
to the next closest (in terms of time) available entry. The call takes two arguments: a journal context object and a pointer to a string
pointer where the cursor string will be placed. The string is allocated via libc malloc(3) and should be freed after use with free(3).
Note that sd_journal_get_cursor() will not work before sd_journal_next(3) (or related call) has been called at least once, in order to
position the read pointer at a valid entry.
sd_journal_test_cursor() may be used to check whether the current position in the journal matches the specified cursor. This is useful
since cursor strings do not uniquely identify an entry: the same entry might be referred to by multiple different cursor strings, and hence
string comparing cursors is not possible. Use this call to verify after an invocation of sd_journal_seek_cursor(3) whether the entry being
sought to was actually found in the journal or the next closest entry was used instead.
RETURN VALUE
sd_journal_get_cursor() returns 0 on success or a negative errno-style error code. sd_journal_test_cursor() returns positive if the
current entry matches the specified cursor, 0 if it does not match the specified cursor or a negative errno-style error code on failure.
NOTES
The sd_journal_get_cursor() and sd_journal_test_cursor() interfaces are available as a shared library, which can be compiled and linked to
with the libsystemd-journal pkg-config(1) file.
SEE ALSO
systemd(1), sd-journal(3), sd_journal_open(3), sd_journal_seek_cursor(3)
systemd 208 SD_JOURNAL_GET_CURSOR(3)